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External Wall Insulation Systems

External Wall Insulation Systems -  Ventilated and Unvented.

Elevate your property's energy efficiency and kerb appeal with our comprehensive range of premium External Wall Insulation (EWI) systems.
EWI involves fixing high-performance insulation boards to the outside of your core wall structure, followed by a protective finish.
This application creates a continuous thermal envelope that dramatically reduces heat loss, resulting in significant savings on heating costs and a reduced carbon footprint.
We supply full system kits, from insulation boards and fixings to basecoats, final renders, facade cladding panels and weatherboards.
Choose the right solution - either our fully sealed unvented systems or advanced ventilated facades - to meet the thermal, moisture,
and fire safety requirements of any new build or retrofit project.

Ceresit CT17 Profi Deep-penetrating Primer - 5L
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Brand: Ceresit Model and Size: CT17 - 5litres
Delivery Time: In Stock 1-2 working days
Ceresit CT17 Profi is a deep penetrating primer for priming walls, floors, ceilings inside and outside buildings prior to fixing ceramic tiles, pouring floors, fixing floor lining, papering, puttying, painting, or fixing thermal insulation boards. It is highly recommended for aerated concrete, anhyd..
£21.02 (£25.22 inc VAT)
£19.55
£23.46 inc VAT
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Abrasive Tool (Grinder) for Polystyrene EWI Sheets Blue Dolphin - 270mm x 130mm
Guide Price
Brand: Blue Dolphin Model and Size: 270mm x 130mm
Delivery Time: 1 - 2 days
Abrasive Tool (Grinder) for Polystyrene EWI Sheets Blue Dolphin - 270mm x 130mm with an ergonomic plastic handle and removable steel piece. It is used for rasping and smoothing polystyrene boards used for insulating external walls. The abrasive surface shaves off the unwanted sections of the polysty..
Guide Price: £20.25
£24.30 inc VAT
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20mm Aluminium Vented Base Track - for timber construction.
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Brand: Wemico Model and Size: 90902ST
Delivery Time: 1 - 2 days
20mm box shaped Aluminium Vented base profile for external thermal insulation board, created to match the new regulations that demand different air flow rates within cavities of steel frame and timber frame structures. Connectors and render clips are also available to suit this product.Note:Ventilat..
Guide Price: £10.47
£12.56 inc VAT
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Brand: Tepe Betopan Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1 - 2 days
8mm Tepe Betopan is a high-performance cement-bonded particle board designed for a variety of construction and architectural applications. It is composed of a blend of wood particles and cement, resulting in a robust and durable product that offers excellent structural integrity. Tepe Betopan is par..
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9mm Magply Render Carrier Board - 2400mm x 1200mm
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Brand: IPP Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1 - 5 working days
9mm Magply Render Carrier Board is a a high strength, breathable non-combustible board manufactured from MgSO4 and reinforcement meshes used for direct rendering, and has been tested with a variety of render systems by the British Board of Agrement.APPLICATIONExternal and internal direct render..
Guide Price: £39.52
£47.42 inc VAT
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Brand: Rockwool Model and Size: 1000mm x 600mm - 1.80m2
Delivery Time: 5 - 7 days
80mm Rockwool Frontrock Super is a high‑performance, mineral‑wool board designed specifically for external wall insulation (EWI) systems. It combines two distinct density layers in a single panel to deliver both excellent thermal performance and robust structural support. The core of the slab is a l..
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Brand: Ceresit Model and Size: CT177
Delivery Time: 2 - 5 working days
Ceresit CT 177 Mosaic Render is used for applying decorative colourful renders to traditional plasters, concrete substrates, gypsum substrates and chipboards, gypsum cardboards, etc. Transparent resins are the binder and coloured quartz gravels size of 1 - 1.6 mm are the fillers. This material is de..
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Brand: Ceresit Model and Size: 25kg
Delivery Time: In Stock 1-2 working days
Ceresit CT29 Smooth Mineral Exterior Filler and Skim Coat is a high-quality, cement-based exterior filler and skim coat designed for use on mineral-based substrates. It is particularly well-suited for smoothing and levelling uneven surfaces, such as concrete, masonry, and rendered walls, prior to th..
£27.56
£33.07 inc VAT
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Ceresit CT76 Solar Protect Silicone Elastomer Render 1.5mm Grain (stone texture) - 25Kg Ceresit CT76 Solar Protect Silicone Elastomer Render 1.5mm Grain (stone texture) - 25Kg
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Brand: Ceresit Model and Size: 25kg
Delivery Time: In Stock 1-2 working days
Ceresit CT76 Solar Protect is a high-performance, silicone elastomer-based render designed for use as a facade finish in Ceresit Ceretherm systems for the thermal insulation of external walls. Formulated with a 1.5mm grain size, this render creates a subtle stone-like texture that adds visual intere..
£85.03 (£102.04 inc VAT)
£68.02
£81.62 inc VAT
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Brand: Ceresit Model and Size: 25kg - 0.5 mm grain
Delivery Time: 1-3 working days
Ceresit CT60 is a ready-to-use, polymer-modified acrylic thin layer render for exterior wall applications. It features a BioProtect formula that provides enhanced resistance to the growth of mould, algae and fungus, ensuring a long-lasting, attractive finish. The acrylic-based formulation provides e..
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9mm STS Render Carrier Board - High Performance Construction Board - 1200mm x 800mm 9mm STS Render Carrier Board - High Performance Construction Board - 1200mm x 800mm
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Brand: STS Model and Size: 1200x800mm - 0.96m2
Delivery Time: 2 - 4 days
9mm STS Render Carrier Board is a heavy-duty, impact-resistant, dimensionally stable and weatherproof fibre cement construction board that provides a perfect surface to receive a thin coat render systems. Even though its recommend rendering as soon as conditions allow, the STS Render Carrier bo..
Guide Price: £15.55
£18.66 inc VAT
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Ceresit CT85 Flex - Adhesive and Base Coat for Expanded Polystyrene (EPS) Boards - 25kg Ceresit CT85 Flex - Adhesive and Base Coat for Expanded Polystyrene (EPS) Boards - 25kg
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Brand: Ceresit Model and Size: 25kg
Delivery Time: In Stock 1-2 working days
Ceresit CT85 Flex is a versatile, cementitious adhesive and base coat designed for use with expanded polystyrene (EPS) boards in external thermal insulation composite systems (ETICS). Formulated to provide exceptional adhesion and flexibility, this product plays a crucial role in the Ceresit Cerethe..
£20.31 (£24.37 inc VAT)
£18.89
£22.67 inc VAT
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Brand: Rockwool Model and Size: 1000mm x 600mm - 3.60m2
Delivery Time: 3 - 7 days
50mm Rockwool Frontrock Plus is a semi-rigid thermal and acoustic insulation slab made from volcanic rock, thus extremely durable, fire resistant and specifically created for external wall applications to go directly under render. These slabs are suitable for insulating the outside of masonry, monol..
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Brand: Rockwool Model and Size: 1000mm x 600mm - 2.40m2
Delivery Time: 1 - 2 weeks
50mm Rockwool Ventirock F Super Rainscreen Slab is a dual-density rigid insulation, used where façade safety is important. As it has a higher density, it can be used for walls with increased fire requirements. Thanks to high resistance to water absorption, the problems of wetting during works are mi..
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Brand: Rockwool Model and Size: 1000mm x 600mm - 2.40m2
Delivery Time: 1 - 2 weeks
50mm Rockwool Ventirock Super Rainscreen Slab is a dual-density rigid insulation, used where façade safety is important. As it has a higher density, it can be used for walls with increased fire requirements. Thanks to high resistance to water absorption, the problems of wetting during works are mini..
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Brand: Rockwool Model and Size: 1000mm x 600mm - 4.80m2
Delivery Time: 1 - 2 weeks
50mm Rockwool Ventirock F Plus Rainscreen Slab is a dual-density rigid insulation, used where façade safety is important. As it has a higher density, it can be used for walls with increased fire requirements. Thanks to high resistance to water absorption, the problems of wetting during works are min..
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Brand: Wemico Model and Size: 37929 - 2.6m
Delivery Time: 1 - 2 days
9mm Frameseal Bead with Protecting Lip and Mesh length of 2.6m, article 37929 for plaster thickness 9mm. Made with Rigid PVC with soft PVC and glass fibre mesh...
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Brand: Austrotherm Model and Size: 600mm x 1250mm - 0.75m2
Delivery Time: 3 - 5 days
10mm Roughened XPS 300 Insulation Render Board - Straight Edge - TOP-F P GK is an extruded polystyrene thermal insulation board that is designed for domestic, commercial and industrial applications where a high resistance to compression and water absorption is required. TOP-F P GK extruded poly..
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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..
£13.66
£16.39 inc VAT
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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..
£12.83
£15.40 inc VAT
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Brand: EWI Pro Model and Size: 5L
Delivery Time: 2 - 3 working days
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..
£15.34
£18.41 inc VAT
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Brand: EWI Pro Model and Size: 20kg
Delivery Time: 2 - 3 working days
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..
£50.62
£60.74 inc VAT
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EWI-225 Premium Adhesive - 25kg bag
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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..
Guide Price: £16.29
£19.55 inc VAT
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Brand: EWI Pro Model and Size: 7kg
Delivery Time: 2 - 3 working days
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..
£28.60
£34.32 inc VAT
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Brand: EWI Pro Model and Size: 100ml
Delivery Time: 2 - 3 working days
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 be used in..
£6.66
£7.99 inc VAT
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EWI-040 Silicone Silicate Render 1mm grain - 25kg Tub - Various Colours
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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..
Guide Price: £60.97
£73.16 inc VAT
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Brand: EWI Pro Model and Size: 7kg
Delivery Time: 2 - 3 working days
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..
£25.96
£31.15 inc VAT
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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,..
£18.91
£22.69 inc VAT
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Brand: EWI Pro Model and Size: 25kg
Delivery Time: 2 - 3 working days
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..
£68.48
£82.18 inc VAT
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Brand: EWI Pro Model and Size: 5L
Delivery Time: 2 - 3 working days
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...
£19.08
£22.90 inc VAT
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