External Wall Insulation Systems

  • Polystyrene Insulation - EPS, XPS, Grey
  • Phenolic Insulation
  • Glass wool, Rock wool Insulation
  • Polyisocyanurate (PIR) Insulation
  • EWI Accessories

Heat moves from warmer to colder areas. Therefore, on cold days, heat from inside a building seeks to get outside. And on warmer days, the heat from outside the building seeks to get inside. Insulating the external walls would slow the movement of heat out through the walls thereby dramatically reducing heating demand. 

Most buildings in UK are constructed with solid walls. They dont have cavities that can be filled or injected with insulation. These solid external walls need to be insulated by adding a layer of insulation to either to the interior face or to the exterior face of the wall. The best method is to insulate the walls on its exterior face. The savings on your heating bills will be bigger, and those savings would have a great impact on your budget.

In a typical building, around 40% of the energy used to heat or cool a room is wasted due to poorly insulated external walls. Correctly chosen external wall insulation (EWI) systems dramatically cut energy loss by wrapping the building in a thermally resistant envelope and also provide lasting protection for the entire structure of the building. The external wall insulation system involves an entire set of different products and accessories, so it is important to make sure that you get all quality products you need from one place. Here at Insulation Shop we provide just that  a complete set of high quality insulation products and all necessary accessories for insulating your exterior walls. The best possible building performance can only be realised if walls are externally insulated.

Benefits of EWI Systems
  • External wall is warm and dry, increasing thermal performance and reducing building maintenance,
  • The heat retention capability of the existing wall is fully utilised,
  • Removes of cold bridges reducing the risk of condensation, damp and mould,
  • Eliminates cracking caused by thermal expansion and contraction,
  • Lightweight construction methods can be used, allowing for fast installation,
  • Reduces heating costs by up to 40%,
  • Reduces maintenance costs,
  • Improves the living environment: - Warmer in Winter - Cool in Summer
  • Protects the building fabric and enhances the aesthetics,
  • Does not encroach on living space,
  • May increase the value of your property

External Wall Insulation (EWI) is a system, which not only insulates, but also protects the exterior of your home. External wall insulation involves fixing a layer of insulation material to the wall, then covering it with a special type of render or cladding. This finish can be smooth, textured, painted, tiled, brick slipped, dry-dashed or panelled.

The usual EWI system consists of insulation, adhesive render or base coat, insulation fixings, polypropylene or glass fibre mesh, primers, decorative surface finishes and also beads, trims and flashings.

  • The insulation is the main thermal layer, and also the background for applying the adhesive render, basecoat and finishes to. Various types of insulation are available The choice of the insulation is dependant on the required thermal performance, zoning, location and cost. The rigid or semi rigid insulation boards are fixed either directly with adhesive, with insulation fixings, or a combination of both.
  • Adhesive renders are applied to the rear of the board in either a dot and dab method, with the perimeter of the board being coated and two slobs in the middle, or with a serrated edge trowel to the entire rear of the insulation board.
  • Insulation fixings used in most EWI systems. These are specified to suit the existing substrate, the height and shape of the building, its location and elevation, and proximity to other buildings. Most times, a combination of adhesive render and insulation fixings are used. 
  • Most basecoats used are polymer modified cement based renders, which are weatherproof and can accommodate varying degrees of thermal movement. Basecoats are reinforced with a mesh over the top of the insulation layer. The reinforcement layer would spread stresses across the facade surface into the insulation below, provide impact resistance to the system and enhance weatherproofing.
  • The final decorative surface finish would provide added weather proofing properties to the building envelope. This finish can be smooth, textured, painted, tiled, brick slipped, dry-dashed, wet-dashed or panelled. It cold be acrylic textures, silicone textures, mosaic textures, mineral renders and brick effect renders.
  • All EWI systems require the use of beads, trims and flashings. They are used as starters, junctions and closers.
Types of Insulation for EWI systems

  • Expanded polystyrene (EPS) White & Grey,
  • Extruded polystyrene (XPS),
  • Phenolic, 
  • Glass wool and Mineral (Stone) wool, 
  • Polyisocyanurate (PIR)

Expanded Polystyrene (EPS) White & Grey Installation

Expanded Polystyrene (EPS) is a lightweight, rigid, plastic foam insulation material, which a cost effective, easy-to-use product for EWI applications. The structure of EPS consists of 98% air. Its initial thermal properties are maintained throughout its working life. It is non-toxic, moisture resistant and rot proof.

Grey Polystyrene (Graphite) is a high quality expanded polystyrene (EPS) board enhanced with integrated graphite within its bead structure. The high-purity graphite particles integrated within the insulation beads reflects radiant heat and significantly improves insulation capability, providing up to 20% greater r-value than traditional white EPS of the same thickness. Warm air always moves towards cold air, In Grey Polystyrene (Graphite) the path taken by warm air moving towards the cold air takes many twists and turns along the way, slowing down the heat transfer, keeping the premises warmer.

Benefits
  • Cost effective - cheapest insulation material in the market. 
  • Easy to cut using a fine tooth saw or hot wire cutter,
  • The surface can be rasped on site to remove level differences,
  • Durable, not affected by short exposure to UV or rain.
  • Long term exposure can cause slight discolouration, but does not affect the thermal performance,
  • Has a high K-value when compared with other insulations,
  • Can be used in low rise and high Rise applications and in coastal locations,
  • Does not absorb moisture and its thermal and mechanical properties are unaffected by damp, humidity or moisture,
  • 100% recyclable.
Precautions
  • Should be kept away from solvents, 
  • Should not be exposed to naked flame,
  • Classified as combustible (combustibility is limited due to retardants present),
  • Should be stored in protected packaging and away from direct sunlight.

Extruded Polystyrene (XPS) Installation

XPS is a closed cell extruded polystyrene insulation with good thermal and water resisting properties having a high compressive strength. A wide range of thicknesses are available to achieve the thermal values required. Extruded polystyrene can withstand extreme loads. Used mainly below ground applications.

Benefits
  • Able to withstand extreme loads, 
  • Below ground applications,
  • Easy to cut using a fine tooth saw or hot wire cutter,
  • Highly water resistant,
  • Can be stored and installed in severe wet weather conditions with no deterioration during its life,
  • Durable, not affected by short exposure to UV or rain.
  • Has a high K-value when compared with other insulations,
  • Can be used in low rise and high Rise applications and in coastal locations,
  • Does not absorb moisture and its thermal and mechanical properties are unaffected by damp, humidity or moisture,
  • 100% recyclable.
Precautions
  • Should be kept away from solvents, 
  • Should not be exposed to naked flame,
  • Classified as combustible (combustibility is limited due to retardants present),
  • Can react to PVC cables and cause cables to become brittle, therefore a conduit should  be used.

Phenolic Insulation

Rigid phenolic insulation is produced by mixing high solids and phenolic resin with a surface acting agent. The heat created by the reaction evaporates a volatile liquid blowing agent in the mixture which produces a network of small bubbles in the material. This insulating core is bonded to two flexible tissue faced layers. The rigid phenolic insulation offer very good thermal insulating properties due to the very low thermal conductivity of phenolic foam. It can actually be 50% more effective than other common insulation materials. Its low thermal conductivity allows specified thermal performance targets to be achieved with minimal thickness of insulation, and saves space.

Kingspan Kooltherm K5 External Wall Board is a one of the top selling phenolic core external wall insulation boards, applicable to both solid and cavity brick and block walls.Kingspan Kooltherm K15 Rainscreen Board is specially created board to be used as a rainscreen in most frame buildings. Xtratherm Safe-R is another phenolic rigid EWI board available at the Insulation Shop.

Benefits
  • Offers the best K-value of all the available insulation - thinner boards required,
  • Easy to cut using a fine tooth saw,
  • High closed cell content and fine cell structure,
  • Lightweight, easy to transport , handle and install,
  • Resistant to fungus and mould growth and will not sustain vermin,
  • Highly resistant to moisture penetration,
  • Dimensionally stable and can be cut accurately to achieve a snug fit,
  • Self extinguishing, low smoke emission, 
  • Can be used in low rise and high Rise applications and in coastal locations.
Precautions
  • Should be kept dry, 
  • Should not be used if effected by rain until it has been dried out,
  • Should not be exposed to naked flame,
  • Should not be left exposed for long periods of time to direct sunlight and rain, 
  • Classified as combustible (combustibility is limited due to retardants present),

Mineral Fibre - Glass wool, Rock wool Insulation

Glass mineral wool is made from sand and recycled glass, limestone and soda ash. The glass is spun to form millions of fine fibres. A resin is used to bind the long fibres together to form a mat of material giving good tear strength. The density of the product determines whether the insulation is a lightweight quilt supplied in rolls, a flexible slab or a rigid slab, and its thermal insulation value.

Rock wool (also known as mineral wool or stone wool) is manufactured from molten rock in a furnace through which a stream of air or steam is blown at temperature of about 1600 C. The final product creates a mass of fine, intertwined fibres which may contain binder (often food grade starch) and an oil to reduce dusting. When pressed into rolls and sheets their ability to partition air makes them excellent heat insulators and sound absorbers. The insulation is produced in a variety of densities according to format and function. High quality Rockwool Fasrock-LL External Wall Insulation Slab and Rockwool Frontrock MAX E Dual Density External Wall Insulation Slab are available at Insulation Shop.

Benefits
  • The only insulation to be classed as non-combustible,
  • Offers good K-values,
  • Production emissions within UK legal defined limits,
  • Reduces overall environmental impact and formaldehyde-free,
  • Non skin irritant,
  • Easy to handle and work,
  • Resistant to rot,
  • Excellent acoustic and thermal properties,
  • Recyclable, 
  • Can be used in low rise and high Rise applications and in coastal locations.

Precautions
  • Should be stored on a flat, covered, protected surface, 
  • Should be kept dry, 
  • Should not be left exposed for long periods of time to rain,
  • Should not be used if effected by rain until it has been dried out,
  • Should limit the area of application of the boards and to basecoat at the earliest chance to avoid the boards becoming wet.

Polyisocyanurate (PIR) Insulation

Polyisocyanurate (PIR) insulation is a closed-cell rigid foam board manufactured with isocyanate and polyether mixed together in the presence of a catalyst that allows the molecules to rearrange, forming closed cells. It has a wider operating temperature range that surpasses standard polystyrene and is fire and smoke resistant. PIR insulation is available as a sprayed foam and as a rigid foam board. PIR does not require a thermal moisture barrier prior to installation. Celotex SW3000 is a PIR EWI board available at Insulation Shop, but would be sold at minimum run of 600m2.

Benefits
  • Offers the best K-value of all the available insulation - thinner boards required,
  • Easy to cut using a fine tooth saw,
  • High closed cell content and fine cell structure,
  • Lightweight, easy to transport , handle and install,
  • Resistant to fungus and mould growth and will not sustain vermin,
  • Highly resistant to moisture penetration,
  • Dimensionally stable and can be cut accurately to achieve a snug fit,
  • Can be used in low rise and high Rise applications and in coastal locations.
Precautions
  • Should not be exposed to naked flame.
  • Should be kept dry, 
  • Should not be used if effected by rain until it has been dried out,
  • Should not be left exposed for long periods of time to direct sunlight and rain, 
  • Classified as combustible (combustibility is limited due to retardants present),
Types of Render

  • Acrylic renders
  • Mineral renders
  • Mosaic renders
  • Silicone renders

Acrylic render

Acrylic render is a finishing coat for render, containing acrylic aggregates to display an attractive finish. It is much more resistant to cracking than other types of render. Acrylic render is available in a wide range of colours and textures ranging from 1mm to 3mm aggregate size.Acrylic render is also fast drying, taking only two days to cure and dry while traditional renders can take up to 28 days. Acrylic render can be used to cover up small hairline cracks in masonry surfaces. The minute reinforcing fibres in Acrylic renders produce an incredibly tough and durable finish. It is permeable to water vapours and allows the substrates (brick etc) to breathe. It is also resistant to efflorescence (the white salts that sometimes leak from brickwork). Acrylic render can be trowelled on or rolled or even sprayed onto a surface. Two coats are generally applied.

Benefits
  • Easy to apply,
  • Easy to clean,
  • Lasts longer - about 8 years,
  • Covers hairline cracks,
  • Water vapour permeable,
  • Allows substrates to breathe,
  • Resistant to efflorescence,
  • Resisting driving rain,
  • Resists UV,
  • Can be trowelled on or rolled or even sprayed,
  • Available in a wide range of colours and textures.
Precautions
  • Should be cleaned of fallen leaves  - might grow algae

Mineral render

Mineral Render is eco-friendly, manufactured from natural materials such as mineral aggregates, and white marble grain. It is available with a rolled texture in 2, 3 and 4mm grain sizes. Mineral Render is highly damage resistant and also is Class 0 surface spread of flame. Mineral render contains cement contact allowing the product to set quicker, so it can be easily used during lower temperature periods. 

Benefits
  • Easy to apply,
  • Easy to clean,
  • Highly damage resistant,
  • Covers hairline cracks,
  • Sets quickly - contains cement,
  • Can be used during lower temperature periods,
  • Fire resistant,
  • Allows substrates to breathe,
  • Resisting driving rain,
  • Resists UV,
  • Available in a wide range of colours and textures,
  • Made entirely from natural materials.

Mosaic render

Flexible and easy to clean render with increased scratch resistance and covering ability. Suitable for indoor and outdoor use on walls exposed to high wear: at plinths, entrances, hallways, window and door reveals. Sealing component: transparent resins. Filler: coloured quartz stone. Can be applied and smoothed with stainless steel trowels. Produces a glassy, colourful coat upon setting. Mosaic render can be used on concrete substrates and traditional plasters etc. 

Benefits
  • Easy to apply and clean,
  • Can be applied and smoothed with stainless steel trowels,
  • Increased scratch resistance, 
  • Covers hairline cracks,
  • Sets quickly - contains cement,
  • Can be used during lower temperature periods,
  • Fire resistant,
  • Allows substrates to breathe,
  • Resisting driving rain,
  • Resists UV,
  • Available in a wide range of colours and textures.

    Precautions
    • Might collect dirt

    Silicone render (Polymer render)

    Polymer render is a cement based system with specially selected polymers added to the mix. These polymers make the finished coat strong yet flexible, allowing them to be used on any substrate. Polymer renders incorporate silicone water repellents as an integral part of the cement based render system. This silicone technology allow water vapour to pass through the render, letting the substrate breathe. The use of nylon reinforced base coats provides a high strength base for the finish coat. Polymer render is available as one coat render, eliminating the need for a base coat. Polymer renders come in a wide range of colours and can be finished in different textures, from a flat sponged float finish or a rougher scraped finish as well as Pebble Dash. They are usually premixed and only require the addition of clean water to produce the final product. This ensures the quality of the render remains consistent and ensures a superior finish.

    Benefits
    • Tough cement based render,
    • Can be applied on a range of substrates,
    • Increased scratch resistance, 
    • Covers hairline cracks,
    • Allows substrates to breathe,
    • Textures could be smooth or dry or wet dashed,
    • Fire resistant,
    • Available premixed,,
    • Resisting driving rain,
    • Resists UV.

      Precautions
      • Might collect dirt

      Installation of EWI Systems

      To correctly specify which insulation system to use, the existing wall envelope should be examined.

      • Check the walls for any visual defects,
      • Check for rising damp and its causes,
      • Check for existing movement joints,
      • Carry out a line and level survey to determine if a levelling coat is required,
      • Check for efflorescence (the white salts that sometimes leak from brickwork),
      • Check the need for repositioning of,  temporary removal or extension of services such as electricity, gas, telephone, TV or internet.
      • Also, check if building permission is required.

      The drawings and specification would include,

      Installation

      • The wall should be cleaned from dirt, grime, algae etc, and be allowed to fully dry out, 
      • If a building has an existing rendered finish, and If the render is in a poor condition--by trapping water, transmitting damp, and not allowing the existing building to breathe, then it is better to remove the render,
      • Check the line and level of any existing building, and the uneven surface of the wall should be corrected,
      • Carry out a pull-out test for adhesives and insulation fixings,  
      • EWI boards should be protected from adverse weather, direct sunlight and possible impact damage,
      • Insulation work should only done in dry conditions, 
      • Boards should be laid in a staggered pattern,
      • They should be staggered at the edges of buildings so that they form a toothed finish,  
      • The boards should be cut in an L shape around the corners of openings,
      • No small cuts of boards are allowed be used, 
      • Gaps between boards should be limited, and if that happens the gaps should be filled tight fit with the same type of insulation,
      • Boards should be level so that the basecoat and decorative finish are installed on a flat surface,
      • Beads and trims to be fixed at given locations, starter tracks at the beginning, beads and trims as the work progresses,
      • Adhesive renders should be applied to the rear of the board, and should follow either a dot and dab method to the board edges, or a fully applied adhesive using a serrated trowel,
      • Mechanical anchors, insulation fixings should be used as per specification,
      • Insulation fixings should be installed at 90 degrees from the wall face, and the washer head sitting flush with the insulation board face,
      • Application of basecoat should only be carried out when the weather is fine and free from rain,
      • In a thin basecoat system, the application of any mesh should occur at the first basecoat stage,
      • Meshes for the thick basecoat system are generally metal laths types and are fixed to the insulation prior to first base coat,
      • Meshes should be installed into the wet basecoat, using the back of a steel trowel and pushed in, so that they sit in the top third,
      • Meshes should be continuous, and should have a minimum 100mm lap with the adjacent mesh to ensure strength and continuity of the basecoat,
      • Once the basecoat has been applied, it should be left to cure to receive the final finish,
      • Finishes should only be applied in good weather and within ambient temperatures (5-30 C), 
      • Finishes should be stored in areas that can achieve a constant temperature, and should not drop below 5C,
      • Textured finishes should be applied with a steel trowel and rubbed with a plastic or nylon trowel to reveal the aggregate,
      • Junctions are finished with a mastic sealant, however its use should be kept to a minimum as they have a short life cycle and will need to be maintained at regular intervals,
      • General good practice would be to fill the gap with the silicone sealant and the final finish taken over the top.

      Typical installation examples

      EWI Cladding systems

      • The actual method of installation will depend on the chosen cladding system.
      • External expanded polystyrene should be cut to ensure a tight fit between the battens and should be wedged into position.
      • If there is an an air gap between the insulation and the cladding, the EPS external boards should be pinned in place using corrosion-free fixings. 
      • A breathable sarking felt should be placed over the insulation, and the edges and joints sealed.
      • As the use of a single layer of EPS external insulation fitted between standard 38-50mm battens will not provide a U-value which satisfies the Building Regulations, a second layer of EPS external board should be fixed over the battens.
      • The cladding system should be efficiently fixed back to the main wall to prevent vertical downward drag of cladding in accordance with the cladding manufacturers instructions.

      Cladding is a non-load bearing skin attached to the outside of a home to shed water and protect the building from the effects of weather and also the key element in the aesthetic appeal of the building. It also directly influences both building cost and property value. The embodied energy, resource depletion and recyclability of the cladding must be balanced against maintenance and durability appropriate to life span. The roles of cladding include sound and thermal insulation, fire resistance and easy cleaning.

      Cladding is typically made from wood, metal, vinyl, masonry and a range of composite materials. Cladding systems include horizontal or vertical boards, overlapping panels or smaller panels such as shingles and tiles. It can be attached directly to the frame or to an intermediate layer of spacers. Cladding is generally considered as non-load bearing, however, some sheet cladding systems can have a structural role when fixed to the frame such as fibre reinforced cement sheeting, reconstituted composite timber, structural plywood. 

      R-value Comparison Chart for External Wall Insulation available at Insulation Shop

      Legend 

      1* Rockwool Frontrock Max-E External Wall Insulation Slab

      2* Rockwool Fasrock-LL External Wall Insulation Slab

      3* Kingspan Kooltherm K15 Rainscreen Board

      4* Xtratherm Safe-R Insulation Board

      5* Kingspan Kooltherm K5 External Board

      6* Grey Polystyrene (Graphite) EPS Board

      7* Cellecta Hexatherm XPeri Perimeter Wall Insulation Board, Sundolitt XPS300 Extruded Polystyrene Board

      8* Cellecta Hexatherm XPeri Perimeter wall Insulation Board

      9* Jablite EPS100 Polystyrene Insulation Board

      10* Kay-Metzeller EPS70 Polystyrene Insulation Board

      11* Jablite EPS70 Polystyrene Insulation Board, Jablite External Wall Polystyrene Insulation Board

      12* White Polystyrene Boad EPS




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      Ceresit CT87 White Adhesive-Filler Mortar '2 in 1' - Pallet of 48 bags

      Ceresit CT87 White Adhesive-Filler Mortar '2 in 1' - Pallet of 48 bags

      Pallet of 48 bags  Delivery Time: In Stock 1-2 working days

      £950.00 (£1,140.00 inc VAT)

      £3.96/m2 (£4.75/m2 inc VAT)

      A1-2738

      Ceresit CT87 mortar is designed to insulate external walls of the buildings by application of external thermal insulation composite system using EPS- or mineral wool faade boards. It is an element of following ETICS from Ceresit Ceretherm Premium, Express and Wool Premium. CT 87 mortar is ..

      £950.00 (£1,140.00 inc VAT)

      £3.96/m2 (£4.75/m2 inc VAT)

      A1-2738
      = m2
      Ceresit TS70 Mega - High Performance Expanding Polyurethane Foam - 870ml

      Ceresit TS70 Mega - High Performance Expanding Polyurethane Foam - 870ml

      870ml  Delivery Time: 1 - 2 days

      £9.80 (£11.76 inc VAT)

      A1-3177

      Ceresit TS70 Mega is a high performance, one component low-pressure expanding polyurethane foam used for quick mounting of frames and for filling cavities, supplementing thermal and acoustic insulation. Ceresit TS 70 Mega foam is used for setting and sealing door and window frames, window sills, rol..

      £9.80 (£11.76 inc VAT)

      A1-3177
      Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render) - Pallet of 48 bags

      Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render) - Pallet of 48 bags

      Pallet of 48 bags  Delivery Time: 1 - 2 days

      £528.00 (£633.60 inc VAT)

      £2.20/m2 (£2.64/m2 inc VAT)

      A1-2736

      Ceresit ZU is designed to insulate external walls of the buildings by application of external thermal insulation composite system using polystyrene boards. It is a component of following ETICS from Ceresit Ceretherm Premium, Express and Wool Premium. Ceresit ZU is used ..

      £528.00 (£633.60 inc VAT)

      £2.20/m2 (£2.64/m2 inc VAT)

      A1-2736
      = m2
      Ceresit ZU White Polystyrene and Reinforced Mesh Adhesive - Base Coat Render

      Ceresit ZU White Polystyrene and Reinforced Mesh Adhesive - Base Coat Render

      ZU White - 25kg  Delivery Time: 1 - 2 days

      £19.88 (£23.86 inc VAT)

      £3.98/m2 (£4.78/m2 inc VAT)

      A1-2732

      Ceresit ZU White is designed to insulate external walls of the buildings by application of external thermal insulation composite system using polystyrene boards. It is a component of following ETICS from Ceresit Ceretherm Premium. Ceresit ZU White is used for fixing of ..

      £19.88 (£23.86 inc VAT)

      £3.98/m2 (£4.78/m2 inc VAT)

      A1-2732
      = m2
      Ceresit ZU White Polystyrene and Reinforced Mesh Adhesive - Base Coat Render - Pallet of 48 bags

      Ceresit ZU White Polystyrene and Reinforced Mesh Adhesive - Base Coat Render - Pallet of 48 bags

      Pallet of 48 bags  Delivery Time: 1 - 2 days

      £595.00 (£714.00 inc VAT)

      £2.48/m2 (£2.98/m2 inc VAT)

      A1-2735

      Ceresit ZU White is designed to insulate external walls of the buildings by application of external thermal insulation composite system using polystyrene boards. It is a component of following ETICS from Ceresit Ceretherm Premium. Ceresit ZU White is used for fixing of ..

      £595.00 (£714.00 inc VAT)

      £2.48/m2 (£2.98/m2 inc VAT)

      A1-2735
      = m2
      Corner Brick Slips – Britannia Range - 215mm x 65mm x 100mm x 15mm

      Corner Brick Slips – Britannia Range - 215mm x 65mm x 100mm x 15mm

      215x65x100x15mm  Delivery Time: 1 - 2 days

      A1-2146

      Corner Brick slips - Britannia Range are slices of brick designed to replicate the look of masonry, typically fitted to a backing board or fixed with adhesives to a substrate. They are extruded from clay and wire cut into slimline profiles before being kiln-fired. They replicate the look of con..

      A1-2146
      Corner Brick Slips – Classic Range - 210-215mm x 65mm x 100mm x 20-25mm

      Corner Brick Slips – Classic Range - 210-215mm x 65mm x 100mm x 20-25mm

      210-215x65x100x20-25mm  Delivery Time: 1 - 2 days

      A1-2148

      Corner Brick slips Classic range are slices of brick designed to replicate the look of masonry, typically fitted to a backing board or fixed with adhesives to a substrate. They are mostly cut from existing bricks. They replicate the look of conventional bricks, and can be supplied in a wide var..

      A1-2148
      EWI-003 Silicone Paint - 15L

      EWI-003 Silicone Paint - 15L

      15L  Delivery Time: 2 - 3 days

      £62.27 (£74.72 inc VAT)

      A1-2704

      EWI-003 Silicone Paint is a professional quality, ready-to-use paint based on silicone resin emulsion and a combination of acrylic binding agents, suitable for interior and exterior surfaces. It provides a water-proof and highly breathable, protective layer, which is resistant to environmental pollu..

      £62.27 (£74.72 inc VAT)

      A1-2704
      EWI-005 Silicone Paint - 5L

      EWI-005 Silicone Paint - 5L

      5L  Delivery Time: 2 - 3 days

      £29.25 (£35.10 inc VAT)

      A1-2705

      EWI-005 Silicone Paint is a professional quality, ready-to-use paint based on silicone resin emulsion and a combination of acrylic binding agents, suitable for interior and exterior surfaces. It provides a water-proof and highly breathable, protective layer, which is resistant to environmental pollu..

      £29.25 (£35.10 inc VAT)

      A1-2705
      other thicknesses
      EWI-010 Acrylic Render - 25kg Tub - Various Colours

      EWI-010 Acrylic Render - 25kg Tub - Various Colours

      25kg  Delivery Time: 2 - 3 days

      £37.68 (£45.22 inc VAT)

      A1-2702

      EWI-010 Acrylic Render is a flexible, resistant to mechanical impact render with excellent water and frost resistance good at holding vibrant colours. It will form a long lasting, aesthetically-pleasing protective barrier on the external surface of your building. This Acrylic Render has excellent wa..

      £37.68 (£45.22 inc VAT)

      A1-2702
      EWI-020 Render Accelerator - 100ml

      EWI-020 Render Accelerator - 100ml

      100ml  Delivery Time: 2 - 3 days

      £5.98 (£7.18 inc VAT)

      A1-2696

      100ml EWI-020 Render Accelerator is used to reduce the drying time of  Silicone Silicate, Silicone and Acrylic renders, and also accelerates the curing time of textured renders, enabling the faster completion of jobs.CHARACTERISTICSAccelerates the curing process, Faster job completion, Can..

      £5.98 (£7.18 inc VAT)

      A1-2696
      EWI-040 Silicone Silicate Render - 25kg Tub - Various Colours

      EWI-040 Silicone Silicate Render - 25kg Tub - Various Colours

      25kg  Delivery Time: 2 - 3 days

      £49.94 (£59.93 inc VAT)

      A1-2700

      EWI-040 Silicone Silicate Render is a very flexible, highly breathable and resistant to mechanical impact and UV rays silicone enhanced render that will form a long lasting, aesthetically-pleasing protective barrier on the external surface of your building. EWI-240 Silicone Silicate Render has excel..

      £49.94 (£59.93 inc VAT)

      A1-2700
      EWI-050 Mosaic Render - 25kg Tub - White, Black or Grey

      EWI-050 Mosaic Render - 25kg Tub - White, Black or Grey

      25kg  Delivery Time: 2 - 3 days

      £67.69 (£81.23 inc VAT)

      A1-2703

      EWI-050 Mosaic Render is a ready to use decorative render that can be used indoors or outdoors as a thin-layer render coat. It is a highly durable render due to the quartz aggregate grain size of 1.8mm, held within a transparent acrylic resin binder that makes it ideal for exposed surfaces prone to ..

      £67.69 (£81.23 inc VAT)

      A1-2703
      EWI-060 Mineral Render - 25kg bag

      EWI-060 Mineral Render - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £16.19 (£19.43 inc VAT)

      A1-2699

      EWI-060 Mineral Render is a breathable and quick-drying, making it ideal for installation in colder, more humid conditions. It is based on Portland cement, texturing aggregate, mineral fillers and hydrated lime and is perfect for external plastering work. EWI-060 mineral render is highly breathable,..

      £16.19 (£19.43 inc VAT)

      A1-2699
      EWI-075 Silicone Render - 25kg Tub - Various Colours

      EWI-075 Silicone Render - 25kg Tub - Various Colours

      25kg  Delivery Time: 2 - 3 days

      £54.49 (£65.39 inc VAT)

      A1-2701

      EWI-075 Silicone Render is a very flexible, highly breathable and resistant to mechanical impact and UV rays silicone enhanced render that will form a long lasting, aesthetically-pleasing protective barrier on the external surface of your building. EWI-075 Silicone Render has excellent water and fro..

      £54.49 (£65.39 inc VAT)

      A1-2701
      EWI-090 Monocouche Scratch Render - 25kg bag - 18 Colours

      EWI-090 Monocouche Scratch Render - 25kg bag - 18 Colours

      25kg  Delivery Time: 2 - 3 days

      £11.33 (£13.60 inc VAT)

      £11.33/m2 (£13.60/m2 inc VAT)

      A1-2698

      EWI-090 Monocouche Scratch Render is a one coat, polymer modified dry mix render, great for render-only system, and only requires the addition of water prior to application. EWI-090 is through-coloured and applied in two passes, where the fibreglass mesh is embedded within the first pass to provide ..

      £11.33 (£13.60 inc VAT)

      £11.33/m2 (£13.60/m2 inc VAT)

      A1-2698
      = m2
      EWI-104 Universal Tile Adhesive - 25kg bag

      EWI-104 Universal Tile Adhesive - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £12.99 (£15.59 inc VAT)

      £3.25/m2 (£3.90/m2 inc VAT)

      A1-2688

      EWI-104 Universal Tile Adhesive is a long-lasting, waterproof, frost proof universal adhesive, perfect for fixing natural stone tiles, ceramic and clinker tiles to substrates. EWI-104 has a long correction time, allowing you to adjust tiles after application. It can be used to fix tiles to walls or ..

      £12.99 (£15.59 inc VAT)

      £3.25/m2 (£3.90/m2 inc VAT)

      A1-2688
      = m2
      EWI-210 EPS Adhesive - 25kg bag

      EWI-210 EPS Adhesive - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £9.29 (£11.15 inc VAT)

      £1.86/m2 (£2.23/m2 inc VAT)

      A1-2680

      EWI-210 is an adhesive used for fixing polystyrene panels (EPS) to exterior surfaces of buildings, such as concrete, light-aggregate and cellular concrete, ceramic or silicate surfaces. This adhesive can be used on untreated, plastered, painted or on textured external surfaces. EWI-210 is composed o..

      £9.29 (£11.15 inc VAT)

      £1.86/m2 (£2.23/m2 inc VAT)

      A1-2680
      = m2
      EWI-220 EPS Basecoat - 25kg bag

      EWI-220 EPS Basecoat - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £10.81 (£12.97 inc VAT)

      £2.16/m2 (£2.59/m2 inc VAT)

      A1-2681

      EWI-220 Basecoat is  specially designed to fix fibreglass mesh reinforced layer for EPS thermal insulation systems. It can also be used for fixing EPS panels to substrates, such as such as concrete, light-aggregate and cellular concrete, ceramic or silicate surfaces. It can be used in fix EPS p..

      £10.81 (£12.97 inc VAT)

      £2.16/m2 (£2.59/m2 inc VAT)

      A1-2681
      = m2
      EWI-221 Winter Adhesive - 25kg bag

      EWI-221 Winter Adhesive - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £11.76 (£14.11 inc VAT)

      £2.35/m2 (£2.82/m2 inc VAT)

      A1-2682

      EWI-221 is a winter adhesive that would allow you to work in temperatures as low as zero degrees. It is used to mount EPS boards on to external surfaces and also to fix the reinforcement layer on those boards. Once mixed with clean water it becomes a homogeneous grey adhesive putty. It has excellent..

      £11.76 (£14.11 inc VAT)

      £2.35/m2 (£2.82/m2 inc VAT)

      A1-2682
      = m2
      EWI-225 Premium Adhesive - 25kg bag

      EWI-225 Premium Adhesive - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £15.11 (£18.13 inc VAT)

      £3.02/m2 (£3.62/m2 inc VAT)

      A1-2683

      EWI-225 Premium is a very strong and most flexible adhesive used to fix polystyrene and mineral wool panels and also to embed reinforced mesh. It consists of mineral binders, synthetic fibres, mineral fillers and modifying admixtures. It is used in render-only systems as a basecoat, where it elimina..

      £15.11 (£18.13 inc VAT)

      £3.02/m2 (£3.62/m2 inc VAT)

      A1-2683
      = m2
      EWI-260 Levelling Mortar - 25kg bag

      EWI-260 Levelling Mortar - 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £8.78 (£10.54 inc VAT)

      £1.76/m2 (£2.11/m2 inc VAT)

      A1-2686

      EWI-260 Levelling Mortar is a ready-to-use dry mortar which is used to level an uneven surface prior installing a external wall insulation (EWI) system. It can also be used on interior surfaces. EWI-260 consists of Portland cement, mineral fillers and modifying supplements that provide a superior le..

      £8.78 (£10.54 inc VAT)

      £1.76/m2 (£2.11/m2 inc VAT)

      A1-2686
      = m2
      EWI-269 Lightweight Basecoat- 25kg bag

      EWI-269 Lightweight Basecoat- 25kg bag

      25kg  Delivery Time: 2 - 3 days

      £10.21 (£12.25 inc VAT)

      £2.04/m2 (£2.45/m2 inc VAT)

      A1-2687

      EWI-269 Lightweight Basecoat is a breathable and flexible levelling adhesive that can be used internally or externally on lightweight masonry structures and stonework. It consists of grey Portland cement, hydrated lime and perlite, and has a declared thermal efficiency of 0.47W/mK. This basecoat can..

      £10.21 (£12.25 inc VAT)

      £2.04/m2 (£2.45/m2 inc VAT)

      A1-2687
      = m2
      EWI-301 Water Based Primer - 5L

      EWI-301 Water Based Primer - 5L

      5L  Delivery Time: 2 - 3 days

      £13.79 (£16.55 inc VAT)

      £0.86/m2 (£1.03/m2 inc VAT)

      A1-2690

      EWI-301 Water Based Primer is deep penetrating primer used to prepare walls before installing external wall insulation or render-only systems. EWI-301 limits the absorptive capacity of substrates and also strengthen and stabilise dusty substrates. It helps to enhance adhesion external wall insulatio..

      £13.79 (£16.55 inc VAT)

      £0.86/m2 (£1.03/m2 inc VAT)

      A1-2690
      = m2
      EWI-310 Universal Primer - 20kg

      EWI-310 Universal Primer - 20kg

      20kg  Delivery Time: 2 - 3 days

      £45.48 (£54.58 inc VAT)

      A1-2691

      EWI-301 Water Based Primer is EWI-310 Universal Primer is used to prepare substrate surfaces to create an artificial key before applying adhesives. It reduces absorbency and improves adhesion. EWI-310 consists of water-based acrylic polymer dispersions, refining agents, quartz aggregate, pigments an..

      £45.48 (£54.58 inc VAT)

      A1-2691
      EWI-330 Mineral Acrylic Primer - 7kg

      EWI-330 Mineral Acrylic Primer - 7kg

      7kg  Delivery Time: 2 - 3 days

      £22.20 (£26.64 inc VAT)

      A1-2692

      EWI-330 Mineral Acrylic Primer is a deep-penetrating primer used to prepare substrate surfaces to create an artificial key prior to applying mineral, acrylic and mosaic renders. It is a water-based primer containing acrylic polymers, quartz aggregate, pigments and enhancers and reduces the absorptiv..

      £22.20 (£26.64 inc VAT)

      A1-2692
      other sizes
      EWI-333 Silicone Silicate Primer - 7kg

      EWI-333 Silicone Silicate Primer - 7kg

      7kg  Delivery Time: 2 - 3 days

      £26.98 (£32.38 inc VAT)

      A1-2694

      EWI-330 Silicone Silicate Primer is a deep-penetrating primer used to prepare substrate surfaces to create an artificial key prior to applying silicone and silicone silicate renders. It is a water-based primer containing acrylic polymers, quartz aggregate, pigments and enhancers and reduces the abso..

      £26.98 (£32.38 inc VAT)

      A1-2694
      other sizes
      EWI-360 Fungicidal Wash - 5L

      EWI-360 Fungicidal Wash - 5L

      5L  Delivery Time: 2 - 3 days

      £15.59 (£18.71 inc VAT)

      A1-2697

      EWI-360 Fungicidal Wash can be used internally or externally on a variety of surfaces, such as brickwork, blockwork, stone, wood and plaster and also be used on roof tiles, slates, steel sheets, roofing felt and timber. EWI-360 would kill all micro-organisms, such as algae, mould, mildew and lichen...

      £15.59 (£18.71 inc VAT)

      A1-2697
      PVC Joints for Aluminium and PVC Base Tracks (pack of 100).

      PVC Joints for Aluminium and PVC Base Tracks (pack of 100).

      3756 - Free Delivery  Delivery Time: 1 - 2 days

      A1-2820

      PVC Joints for Aluminium and PVC Base Tracks for external wall thermal insulation board. ..

      A1-2820
      PVC Top Section with Mesh Wing of the Render Only Compression Joint (pack of 10).

      PVC Top Section with Mesh Wing of the Render Only Compression Joint (pack of 10).

      3749 - Free Delivery  Delivery Time: 2 - 3 days

      A1-2987

      PVC Top Section with Mesh Wing of the Render Only Compression Joint for thin coat render. Ideally suited to timber framed buildings. The aluminium base section is supplied pre-coated white, but can be powder coated to any colour if required. ..

      A1-2987
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