External Wall Insulation Systems

  • Phenolic external wall insulation boards,
  • Polystyrene boards,
  • Mineral wool slabs,
  • Insulation fixings and beads,
  • Fibreglass rendering mesh,
  • Primers, adhesives and renders

If you have decided to add insulation to your exterior wall, you will notice that the task should not be taken lightly and, unlike insulating your interior wall or your floor for example, it involves a few components more, that is, an entire system that must be applied in order of making the insulation work correctly. Adding external wall insulation includes quite a few stages and involves an entire set of different products and materials whose installation often includes serious reconstruction work, why it is important to make sure that you get everything you need. Here at Insulation Shop we provide just that – an entire and complete set of high quality insulation products and all additional materials and components necessary for adding insulation to your solid walls.

External Wall Insulation                    External Solid Wall Insulation

The installation process involves a few stages of adding proper materials to your solid wall, usually using the dot and dab technique, which, simply put, includes adding an insulation material to the wall surface by using specially designed adhesives, adding a primer and covering it with a mesh and then adding a render for a smooth finish. If the process seems too complicated, not to worry, since the following should convince you otherwise:

  1. The most important component of the entire system is the insulation material bonded to the wall surface, it is crucial that you only choose highly efficient products that have all the required properties and insulation power. These include different types of  PIR or phenolic insulation boards (a popular choice), polystyrene or mineral wool slabs, all able to add to your home energy efficiency. If you need additional advice in choosing the most adequate product, our advice is to opt for either:
  • 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. It comprises of a fire class 0 rated phenolic core covered with a glass tissue on both sides. The board is used t both new build and refurbishment projects. It is highly effective in air filtration, fire resistance and water vapour control, and also very environmentally friendly--zero ODP and low GWP blowing agents.
  • Kingspan Kooltherm K15 Rainscreen Board is another phenolic core external insulation board we offer. It consists of a rigid thermoset phenolic core covered with low emissivity composite foil, which is very easy and safe to use, class 0 fire rated, and also mould, air and water resistant. And also Xtratherm Phenolic Insulation Board including a class 0 rated foam core covered with low emissivity foil facings offers low thermal conductivity. They have the durability to withstand the life span of the building and to give premium effectiveness in both new build and refurbishment applications.
  • Jablite External Wall Insulation Board or Grey Polystyrene (Graphite) External Wall Insulation Board is another option worth considering, which has a much wider application in not only in external walls, but also internal walls, floors, basements and roof insulation. The boards are made of expanded polystyrene, very lightweight and easily cut to the desired size, durable, rot proof and able to meet and exceed the values prescribed by the applicable Building Regulations. 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.
  • Mineral wool is one of the most commonly used insulation materials in construction. There are two main types of mineral wool; Glass Wool and Rock Wool. Both are manufactured from naturally found materials on earth.
  • 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 it’s thermal insulation value.
  • Rock 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. \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.
  • Celotex SW3000 External Wall Insulation Board is another product we would recommend due to its easy installation (it presents a direct render solution) and wide application in mostly refurbishment external wall insulation projects. Although manufactured from a rigid PIR insulation core, which improves its durability and robustness, it is very lightweight and offers a much thinner solution when compared to the alternatives.
  1. To efficiently fix the EWI boards, you need an efficient adhesive that will be able to hold the board, while not damaging it. This can be achieved with Ceresit ZU Insulation and Mesh Adhesive which is especially designed for polystyrene boards. It offers high adhesion, flexibility, durability and weather resistance. Another option is to use the Ceresit CT87 White Adhesive-Filler Mortar '2 in 1' for fixing expanded polystyrene boards and mineral wool slabs. You could also use the Ceresit CT84 Express foam adhesive which offers a 15% greater adhesive strength when compared to traditional cement adhesives, also superb homogeneity due to the metal ball that prevents big air bubble from forming, and the ability to be added at extreme weather conditions such as low temperatures and high humidity.
  2. If you want the render coat to adhere well to the surface you will need a good primer layer. This is why your option could be Ceresit CT 16 Primer, as it can be very easily applied to the surface, It is unaffected by the weather conditions, easing the application of all types of renders and speeding up the drying process. Available in more than 200 colours.
  3. All necessary accessories needed for mechanical fixing of EWI systems are available at Insulation shop. 

  1. All necessary render material needed to give a decorative smooth finish to your insulated external wall is available at Insulation Shop.

  • The stone texture 1,5 mm grain Ceresit CT74 Silicone Render applicable to both internal and external applications, ideal for substrates where high permeability is important, highly corrosion resistant, dirt and weather resistant. Available in more than 200 hundred colours.
  • If you are looking for a high quality silicone-silicate render, then your choice could be Ceresit CT174 Silicate-Silicone Render, 1,5 mm grain, made for outdoor and indoor applications, due to its weather conditions resistance, also hydrophobic and UV resistant, combining advantages of both silicone and silicate renders.
  • Ceresit CT60 Acrylic Render is another suitable option form the Ceresit family of renders, applicable to concrete and gypsum substrates, plasters, chipboards etc. It is properly protected from biological corrosion, vapour permeable and hydrophobic, again available in a wide variety of colours.
  • Finally, we also offer the Ceresit CT137 Mineral Render, best combined with EPS insulation boards or mineral wool boards, applicable to external and internal walls, available in white colour, properly certified and weather resistant.

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20mm Aluminium Base Track (pack of 10).

20mm Aluminium Base Track (pack of 10).

90602 - Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£91.20 (£109.44 inc VAT)

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20mm Aluminium Base Track (pack of 10) Length: 2.5m Clear width: 23mm Fixing leg: 35mm For Insulation Board: 20mm Material: Aluminium   Box shaped base profiles for Thermal Insulation Systems, designed for various thicknesses of insulation boar..

£91.20 (£109.44 inc VAT)

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other widths
6mm PVC System Base Track Clip / Drip with Mesh (pack of 15).

6mm PVC System Base Track Clip / Drip with Mesh (pack of 15).

37400 - Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£89.35 (£107.22 inc VAT)

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6mm System Base Track Clip / Drip with mesh (pack of 15) Material: PVC Render thickness: 6mm Length: 2.5m PVC clips with mesh wing to suit base profiles. Designed for 6mm render thickness. Also available in aluminium and stainless steel, please contact us for more d..

£89.35 (£107.22 inc VAT)

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other sizes
10mm Grey Polystyrene (Graphite) for External Wall Insulation (pack of 60)

10mm Grey Polystyrene (Graphite) for External Wall Insulation (pack of 60)

1000x500mm - 30m2  Delivery Time: 2 - 4 days

£25.92 (£31.10 inc VAT)

£0.86/m2 (£1.03/m2 inc VAT)

10mm Grey Polystyrene (Graphite) for External Wall Insulation (pack of 60) Board Size: 500x1000mm Area per pack: 30.0m2 Thermal conductivity: 0.031W/mK R-Value: 0.32m2K/W Weight: 0.15kg/m2 Compressive strength: ≥70kPa Tensile strength: 100 kPa Bending strength:110 kPa Thickness tolerance: +/-1mm (T2..

£25.92 (£31.10 inc VAT)

£0.86/m2 (£1.03/m2 inc VAT)

= m2
other thicknesses
20mm Kooltherm K5 External Wall Board Kingspan (pack of 25)

20mm Kooltherm K5 External Wall Board Kingspan (pack of 25)

K5 1200x600 - 18 m2  show quantity discountsDelivery Time: 3 - 5 days

£120.28 (£144.34 inc VAT)

£6.68/m2 (£8.02/m2 inc VAT)

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20mm Kooltherm K5 External Wall Board Kingspan (pack of 25) Board size: 1200mm x 600mm Area per pack: 18m2 Thermal conductivity: 0.023 W/m.K R-Value: 0.80 m2K/W Compressive strength: exceeds 120 kPa at 10% compression Water vapour resistivity: grater than 300 MN.s/g.m..

£120.28 (£144.34 inc VAT)

£6.68/m2 (£8.02/m2 inc VAT)

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= m2
other thicknesses
Ceresit CT84 Express - Foam Adhesive for Internal and External Wall Insulation Boards

Ceresit CT84 Express - Foam Adhesive for Internal and External Wall Insulation Boards

CT84  show quantity discountsDelivery Time: 5 - 7 days

£13.50 (£16.20 inc VAT)

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Ceresit CT84 Express Foam Adhesive for External Wall Insulation Boards Packaging: metal container of 750ml Temperature of application: from 0 °C to +40 °C Humidity of application: even over 90% Time of surface drying: ca. 10 min. Hardening time: ca. 2 h Package coverage: - in additional heatin..

£13.50 (£16.20 inc VAT)

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Ceresit PU Profi Foam Cleaner

Ceresit PU Profi Foam Cleaner

Ceresit PU  show quantity discountsDelivery Time: 5 - 7 days

£10.59 (£12.71 inc VAT)

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Ceresit PU Profi Foam Cleaner Packaging: metal container of 500ml Temperature of application:  min + 5 °C  Ceresit cleaner is used for removing fresh foam spots and cleaning the applicator. Cleaning of the applicator is necessary if: difficulties have been experienced while using..

£10.59 (£12.71 inc VAT)

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Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render)

Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render)

ZU  show quantity discountsDelivery Time: 5 - 7 days

£19.00 (£22.80 inc VAT)

£3.80/m2 (£4.56/m2 inc VAT)

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Ceresit ZU Insulation and Mesh Adhesive for Insulated Renders Systems Packaging: bags of 25kg Density: approx. 1.3kg/dm³ Temperature of application: from +5 °C  to +25 °C Drying time: approx. 15min. Assumed consumption: 4 to 5 kg/m² Please note that we ..

£19.00 (£22.80 inc VAT)

£3.80/m2 (£4.56/m2 inc VAT)

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= m2
Ceresit CT87 White Adhesive-Filler Mortar '2 in 1'

Ceresit CT87 White Adhesive-Filler Mortar '2 in 1'

CT87  show quantity discountsDelivery Time: 5 - 7 days

£25.00 (£30.00 inc VAT)

£5.00/m2 (£6.00/m2 inc VAT)

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Ceresit CT87 White Adhesive for Mesh - Base Coat Render for External Wall Insulation Systems  '2 in 1' Packaging: bags of 25kg Bulk density: approx. 1.3kg/dm³ Temperature of application: from +5 °C to +25 °CAssumed consumption: Fixing of EPS-boards: approx. 4.0 kg/m², A..

£25.00 (£30.00 inc VAT)

£5.00/m2 (£6.00/m2 inc VAT)

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= m2
70mm Isofast Insulation Panel Fixings - pack of 250.

70mm Isofast Insulation Panel Fixings - pack of 250.

70mm x 10mm- Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£30.72 (£36.86 inc VAT)

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70mm Isofast Insulation Panel Fixings (pack of 250) Length: 70mm Hole Diameter: 10mm Plug: polypropylene Nail: polypropylene Installation Temperature: 0 / +40°C Working Temperature: -40 / +30°C (max +70 for short periods)   Isofast insulation panel fixing..

£30.72 (£36.86 inc VAT)

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other lengths
Fibreglass Rendering Mesh Roll

Fibreglass Rendering Mesh Roll

1m x 50m (50m2)  show quantity discountsDelivery Time: 1 - 2 days

£39.80 (£47.76 inc VAT)

£0.80/m2 (£0.96/m2 inc VAT)

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Fibreglass Rendering Mesh Roll Length: 50m Width: 1m Area per roll: 50m2 Weight: 160g/m2 Tensile strength: 1.5 kN/5cm Fiberglass reinforcing mesh is coated with acrylic acid copolymer liquid and is therefore water, alkali and age resista..

£39.80 (£47.76 inc VAT)

£0.80/m2 (£0.96/m2 inc VAT)

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= m2
Ceresit CT325 Glass-Fibre Mesh (roll)

Ceresit CT325 Glass-Fibre Mesh (roll)

1.1m x 50m - 50m2  show quantity discountsDelivery Time: 2 - 3 days

£62.20 (£74.64 inc VAT)

£1.24/m2 (£1.49/m2 inc VAT)

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Ceresit CT325 Glass-Fibre Mesh Roll width: 1.1mRoll length: 50m Amount required: 1.1m/m2Coverage per roll: 50.0m2Treated fabric weight: 160 g/m2Mesh square dimensions: 4mm x 4mmLongitudinal elongation: <3.3%Lateral elongation: <2.7%Colour: dark greenCeresit CT325 Glass-Fibre Mesh is a reinfor..

£62.20 (£74.64 inc VAT)

£1.24/m2 (£1.49/m2 inc VAT)

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= m2
Ceresit CT16 Primer

Ceresit CT16 Primer

CT16  show quantity discountsDelivery Time: 5 - 7 days

£30.00 (£36.00 inc VAT)

£1.07/m2 (£1.28/m2 inc VAT)

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Ceresit CT16 Primer for Insulated Renders Packaging: plastic container of 10l Density: approx. 1.58kg/l Temperature of application: from +5 °C to +35 °C Drying time: approx. 15min. Resistant to rain: from 24 to 48 hours depending on the temperature Assumed consumption: 0.2 to 0.5 l/m² Colour: white..

£30.00 (£36.00 inc VAT)

£1.07/m2 (£1.28/m2 inc VAT)

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= m2
Corner Bead With Mesh

Corner Bead With Mesh

2.5m  show quantity discountsDelivery Time: 1 - 2 days

£2.98 (£3.58 inc VAT)

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Corner bead with mesh for insulated renders Length: 2.5m   Plastic corner bead with fibreglass mesh.   APPLICATION external wall insulation systems mineral, acrylic, silicone and silicate renders corners and around recessed windows   ..

£2.98 (£3.58 inc VAT)

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Ceresit CT137 Mineral Render 1.5 mm grain

Ceresit CT137 Mineral Render 1.5 mm grain

CT137  show quantity discountsDelivery Time: 5 - 7 days

£35.00 (£42.00 inc VAT)

£3.50/m2 (£4.20/m2 inc VAT)

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CT137 Ceresit Mineral render - 1.5 mm grain (stone texture)Packaging: bags of 25kgDensity: approx. 1.4kg/dm³Temperature of application: from +5 °C  to +25 °CDrying time: approx. 15minAssumed consumption: from 2.00 to 2.4 kg/m²Colour: white Please note that we can supply this product c..

£35.00 (£42.00 inc VAT)

£3.50/m2 (£4.20/m2 inc VAT)

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= m2
Ceresit CT34 Smooth Mineral Render White - 25Kg

Ceresit CT34 Smooth Mineral Render White - 25Kg

CT34 - 25kg  show quantity discountsDelivery Time: 2 - 3 days

£38.00 (£45.60 inc VAT)

£1.52/m2 (£1.82/m2 inc VAT)

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Ceresit CT 34 Smooth Mineral Render White - 25KGPackaging: bags of 25kgDensity: approx. 1.00kg/dm³Application Temperature: from +5 °C  to +25 °CMixing ratio: 6.75÷7.25 l water per 25 kgPot life: approx. 2 hoursAssumed consumption: approximately 1.0 kg/m2 per each mm of thickness Ceresit CT 34 S..

£38.00 (£45.60 inc VAT)

£1.52/m2 (£1.82/m2 inc VAT)

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= m2
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