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Polystyrene External Boards

Most buildings are constructed with solid walls. They don’t 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. This insulation would slow the movement of heat out through the walls thereby dramatically reducing heating demand. The best method is to insulate the walls on its exterior face.

Thermal insulation of an external wall using a contact method is one of the traditional methods of wall insulation. It can be performed perfectly in both new and reconstructed building. Solid expanded polystyrene (EPS) insulating boards are glued onto the external wall and anchored mechanically and then a thin layer of coloured plaster is applied. Contact insulation is used most frequently in buildings built of bricks but may also be used successfully in modern wooden houses.

The solid wall insulation must achieve a U-value of 0.30 W/m2k, hence at least 90mm of expanded polystyrene insulation needs to be used. Obviously the thicker the material, the better its insulating performance. Expanded polystyrene is one of the least expensive, most cost effective rigid foamed plastic insulations and is an excellent material for wall insulation applications that come with a restricted budget.

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.

CHARACTERISTICS

  • Low thermal conductivity - Due to its closed air-filled cell structure that inhibits the passage of heat or cold, a high capacity for thermal insulation is achieved,
  • Lightweight and ease of handling and installation,
  • Low water absorption - does not absorb moisture and its thermal and mechanical properties are unaffected by damp, humidity or moisture,
  • Chemical resistance - polystyrene is completely compatible with other materials used in construction including cements, plasters, salt etc.,
  • Ageing resistance - material's properties are retained will last as long as the building itself, if properly installed,
  • Polystyrene is not altered by external agents such as fungi or parasites as they find no nutritional value in the material.

INSTALLATION

Render systems

  • Adhesive/levelling compound applied to the external wall,
  • Expanded polystyrene board,
  • Insulation fixings for the reinforcing insulation boards,
  • Metal or fibrous mesh reinforcement,
  • Render system and finish

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 manufacturer’s instructions.

Filter by MANUFACTURER (show)

Brand: Arbet Model and Size: 1000x500mm - 30m2
Delivery Time: In Stock 1-2 working days
10mm Grey Polystyrene (Graphite) is a high quality expanded polystyrene (EPS) board enhanced with integrated graphite within its bead structure and of grey colour. The high-purity graphite particles integrated within the insulation beads reflects radiant heat and significantly improves insulati..
£35.75
£42.90 inc VAT
31 (0e 0s)
Brand: Arbet Model and Size: 1000x500mm - 30m2
Delivery Time: In Stock 1-2 working days
10mm White Polystyrene Board is a very lightweight and easy to handle and install, expanded polystyrene (EPS) board specially designed to be used as a part of various external wall insulation systems. It can be used in applications requiring transfer of small mechanical loads.Please note polystyrene..
£32.99
£39.59 inc VAT
27 (0e 0s)
30mm Sundolitt XPS300 Extruded Polystyrene Board (pack of 14) 30mm Sundolitt XPS300 Extruded Polystyrene Board (pack of 14)
Guide Price
Brand: Sundolitt Model and Size: 1200x600mm - 10.08m2
Delivery Time: 2 - 3 days
30mm Sundolitt XPS300 is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. Sundolitt XPS300 is highly water resistance, so can be stored and installed..
Guide Price: £83.47
£100.16 inc VAT
40mm Jablite External Wall Polystyrene Insulation Board EPS - pack of 15
Guide Price
Brand: Jablite Model and Size: Jablite 40mm - 10.80m2
Delivery Time: 3 - 4 days
40mm Jablite External Wall Insulation Board is a very lightweight and easy to handle and install EPS 70wall board containing a flame-retardant additive, designed to be used as a part of various external wall insulation systems. It can be bonded or mechanically fixed to the wall. Installing insulatio..
Brand: Jablite Model and Size: 2400x1200 (34.56m2)
Delivery Time: 2 - 3 days
25mm Jablite EPS is a lightweight cellular plastic material suitable for a wide range of building insulation applications. It is an excellent insulating medium which exhibits consistent thermal performance over the range of temperatures normally encountered in buildings. The material is versatile, l..
£119.20
£143.04 inc VAT
Brand: Kay-Metzeler Model and Size: 2400x1200mm - 34.56m2
Delivery Time: 2 - 3 days
25mm EPS70 Kay-Metzeler boards are produced by cutting expanded foam blocks. Placed above a concrete slab or a precast concrete floor in domestic ground-floor constructions, then finished with a wearing layer of chipboard to satisfy the Building Regulations' U-value requirements. Kay-Metzeler achiev..
£97.52
£117.02 inc VAT
50mm EPS100 Polystyrene Insulation Board Jablite (pack of 12)
Guide Price
Brand: Jablite Model and Size: 2400x1200 - 34.56m2
Delivery Time: 1 - 2 weeks
50mm Jablite EPS 100 board is a lightweight and cost efficient product which can be used for insulation of different constructions, including roofs, floors and walls, since it provides constant and stable thermal performance under different temperature conditions. It is made from expanded polystyren..
Guide Price: £189.60
£227.52 inc VAT
30mm Cellecta Hexatherm XPeri Perimeter Wall Insulation Board 30mm Cellecta Hexatherm XPeri Perimeter Wall Insulation Board
Guide Price
Brand: Cellecta Model and Size: 600x2500mm - 1.50m2
Delivery Time: 2 - 4 days
30mm Cellecta Hexatherm XPERi board has an outstanding compressive strength, low water absorption and life-long thermal performance, make them the ideal insulation for basements and below ground applications. They feature an interlocking edge detail and are suitable for fixing externally against bas..
Brand: Friulsider Model and Size: 70mm x 10mm- Free Delivery
Delivery Time: 1 - 2 days
70mm Isofast insulation panel fixings are used for fixing rigid and semi - rigid insulation boards to external solid walls. Plug and nail are made from polypropylene, the nylon nail is reinforced with glass fibre. Isofast fixings offer high fixing thicknesses and no thermal bridging. APPLI..
£34.52
£41.42 inc VAT
16 (0e 0s)
Brand: Friulsider Model and Size: 50x4.5mm CTP - Free Delivery
Delivery Time: 1 - 2 days
50mm CTP Insulation Panel Fixings for rigid and semi-rigid insulating boards and panels. APPLICATIONWood, Panels & sheets..
£64.76
£77.71 inc VAT
Brand: Friulsider Model and Size: 50x8 FPR - Free Delivery
Delivery Time: 1 - 2 days
50mm Polypropylene Insulation fixings for rigid and semi-rigid insulating boards and panels.APPLICATIONConcreteSolid stoneSolid brick..
£43.55
£52.26 inc VAT
Brand: Klimas W-M Model and Size: 70mm
Delivery Time: 1 - 2 days
70mm Universal Insulation Panel Fixing with Metal Pin LMX10 is for fixing 10mm thick polystyrene, mineral wool and lamella mineral wool external insulation on concrete, brick, light and autoclave concrete substrates. If the substrate surface is absolutely flat, you may use this anchor to fix in..
£38.00
£45.60 inc VAT
11 (0e 0s)
Brand: Ceresit Model and Size: 10 litres
Delivery Time: In Stock 1-2 working days
Ceresit CT16 is designed for priming substrates before the application of mineral, acrylic, silicone and silicone-silicate thin-coat renders, finishes and paint coats. Facilitates the application and texturing of plasters, optimize the drying process and improves the plaster-to-substrate adhesi..
£39.50
£47.40 inc VAT
7 (50e 6s)
Brand: Ceresit Model and Size: CT84
Delivery Time: In Stock 1-2 working days
Ceresit CT84 Express is a one-component low expansion polyurethane adhesive for fixing an External Wall Insulation boards (Phenolic, PIR, Expanded Polystyrene) and also plasterboards in drylining. Approximately 2 hours after application, the insulation boards may be smoothed, anchored and, then the ..
£12.83
£15.40 inc VAT
155 (1e 14s)
Brand: Ceresit Model and Size: CT87
Delivery Time: In Stock 1-2 working days
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 facade boards. It is an element of following ETICS from Ceresit Ceretherm Premium, Express and Wool Premium. CT 87 mortar is..
£25.00
£30.00 inc VAT
17 (84e 0s)
Brand: Ceresit Model and Size: ZU-25kg
Delivery Time: 1 - 2 days
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 ..
£16.00
£19.20 inc VAT
16 (313e 26s)
Brand: Protektor Model and Size: 1m x 50m (50m2)
Delivery Time: 1 - 2 days
Fiberglass reinforcing mesh is coated with acrylic acid copolymer liquid and is therefore water, alkali and age resistant. The mesh has high tensile strength, good dimensional stability, good elasticity, capillary action and corrosion resistance.CHARACTERISTICSExcellent stability, strength and cohes..
£39.80
£47.76 inc VAT
57 (0e 2s)
ISO RG Insulation Washer for Soft Panels Pak of 100
Guide Price
Brand: Friulsider Model and Size: ISO RG Soft
Delivery Time: 3 - 4 days
ISO RG Insulation Washer for Soft Panels is used for fixing soft insulation panels.  ..
Brand: Friulsider Model and Size: ISO RG -61928060000 - Free Delivery
Delivery Time: 1 - 2 days
Polypropylene ISO RG Screw Cover Cap Insulation Washer is used for fixing insulation panels and it has no thermal transmission due to the screw cover cap. Can be used with screws up to 6mm in diameter...
£31.89
£38.27 inc VAT
Model and Size: 100mm - Free Delivery
Delivery Time: 2 - 3 days
Marmox Thermoblock is a load-bearing and highly insulating block made from extruded polystyrene (XPS) reinforced with polymer-modified concrete cylinders and covered with reinforced polymer-modified concrete mortar. It is designed to be a perfect, thermally insulating replacement for wall bricks and..
£233.75
£280.50 inc VAT
Brand: Klimas W-M Model and Size: 60mm - Free Delivery
Delivery Time: 1 - 2 days
TD060 Nylon Support Disc for Polystyrene, Mineral Wool and Lamella Mineral Wool external wall insulation, to be mounted with a galvanized steel screw. The disc has a stopper, which is used to plug the hole, covering the screw and preventing thermal bridging.CHARACTERISTICSImpact resistant nylon..
£25.15
£30.18 inc VAT
1 (0e 0s)
Brand: Klimas W-M Model and Size: 90mm
Delivery Time: 1 - 2 days
TDX90 Support Disc is a high impact resistant polyethylene 90mm diameter disc for fixing mineral wool and lamella mineral wool external wall insulation. The greater hold-down area of the disk prevents the anchor pulling through the strands of mineral wool and lamella boards. TDX90 is ..
£12.00
£14.40 inc VAT
10 (0e 0s)
20mm Cellecta Hexatherm XR Roughened Planed  XPS Insulation Board - pack of 20
Guide Price
Brand: Cellecta Model and Size: 600x1250mm - 15m2
Delivery Time: 2 - 4 days
20mm Cellecta Hexatherm XR is a specially designed closed cell extruded polystyrene board, ideal for for both internal and external wall applications for covering with plaster or render. The board's high comprehensive strength allows it to withstand withstand heavy point loads. The board is com..
Brand: ZVM Model and Size: 270mm x 130mm
Delivery Time: 1 - 2 days
270mm x 130mm Abrasive Tool (Grinder) for Polystyrene EWI boards is used for rasping and smoothing polystyrene boards used for insulating external walls. The abrasive surface shaves off the unwanted sections of the polystyrene sheets to create a flat surface prior to adding the basecoat layer i..
£17.00
£20.40 inc VAT
10 (0e 0s)
30mm Soprema XPS SL Extruded Polystyrene Board (pack of 14) 30mm Soprema XPS SL Extruded Polystyrene Board (pack of 14)
Guide Price
Brand: Soprema Model and Size: 1250x600mm - 10.50m2
Delivery Time: 2 - 3 days
30mm Soprema XPS SL is an extremely durable, high strength extruded polystyrene thermal insulation board offering high water resistance for flat and pitched roofs. It can be stored and installed in severe wet weather conditions with no deterioration during its life. It is easy to cut and custom..
Guide Price: £102.21
£122.65 inc VAT
30mm Styrodur 3000CS Extruded Polystyrene Board XPS -  1265mm x 615mm - pack of 14
Guide Price
Model and Size: 1265mm x 615mm - 10.92m2
Delivery Time: 2 - 3 days
30mm Styrodur 3000CS Extruded Polystyrene Board XPS is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. Styrodur 3000CS is the all-round thermal insulation board with smooth surface and rebated on..
40mm Ravatherm XPS X 300 SB Extruded Polystyrene Board -  2500mm x 600mm - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 2500x600mm - 12m2 per pack
Delivery Time: 5 - 7 days
40mm Ravatherm XPS X 300 SB Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant pol..
50mm Ravatherm XPS X 300 SL Extruded Polystyrene Board - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 days
50mm Ravatherm XPS X 300 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant pol..
50mm Ravatherm XPS X 500 SL Extruded Polystyrene Board - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 days
50mm Ravatherm XPS X 500 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant pol..
50mm Ravatherm XPS X 700 SL Extruded Polystyrene Board - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 days
50mm Ravatherm XPS X 700 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant pol..
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