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Unvented EWI Systems

Explore our selection of Unvented EWI Systems, including  the most popular Insulated Render systems.

Unvented External Wall Insulation Systems (EWI) involve fixing the insulation to the building's exterior,
and the protective, weatherproof finishing layer is then installed straight onto the insulation, forming a continuous barrier with no cavity,
creating a continuous thermal layer that eliminates cold spots and ensures a thermal bridge-free facade

The final weather barrier is provided by a robust, aesthetically pleasing topcoat, such as flexible, thin coat render:
- Silicone
- Acrylic
- Silicate
- Mineral
or with Brick or Stone Slips or Tiles.

Types of insulation used in those systems:

- fire-resistant Rock Wool
- cost-effective EPS Polystyrene (white or grey)
- highly efficient Phenolic 
- water-resistant XPS Polystyrene (usually below DPC level)

 

Choose subcategory or scroll down to see products

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..
£36.29
£43.55 inc VAT
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Ceresit CT49 Silix XD Nano-Silicone Reno Paint
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Brand: Ceresit Model and Size: CT49
Delivery Time: 2 - 3 working days
Ceresit CT49 Silix XD Nano-Silicone Reno Paint is a highly hydrophobic, vapour permeable exterior and interior paint formulated with advanced nano-silicone technology. Designed for use on a variety of building façades and interior surfaces, this paint offers exceptional durability, weather resistanc..
£132.00 (£158.40 inc VAT)
£122.76
£147.31 inc VAT
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Ceresit CT42 Acrylic Paint - 15L Ceresit CT42 Acrylic Paint - 15L
Guide Price
Brand: Ceresit Model and Size: CT42
Delivery Time: 2 - 3 working days
Ceresit CT42 Acrylic Paint is a high-quality, water-based acrylic paint designed for interior and exterior use. It is formulated to provide a durable, long-lasting finish that is resistant to fading, peeling, and cracking. The paint has a smooth, creamy texture that applies easily and evenly, with g..
Guide Price: £72.50
£87.00 inc VAT
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50mm WEC 791 Verge Trim Upstand Profile - 2.5m length
Guide Price
Brand: Wemico Model and Size: WEC 791 - 50mm
Delivery Time: 1 - 2 days
The WEC 791 profile has an up-stand that can be pushed under a barge board. This reduces the need for a mastic seal and removes future maintenance issues. This profile also has an increased drip section to improve visual appearance and a large front face to help prevent the water blowing up and soak..
Guide Price: £26.27
£31.52 inc VAT
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100mm Isoroc Isofas Mineral Wool Insulation Slab - 1000mm x 600mm (pack of 3)
Guide Price
Brand: Isoroc Model and Size: 1000mm x 600mm - 1.8m2
Delivery Time: 1 - 2 days
100mm Isoroc Isofas Mineral Wool Insulation Slab is a reliable and durable non-flammable insulation solution for universal use. These slabs can be used in external and internal wall insulation as thermal, acoustic and fire insulation. They can be used as a barrier for fire protection. Does not absor..
Guide Price: £41.00
£49.20 inc VAT
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Brick Slips Britannia Range (pack of 30) Brick Slips Britannia Range (pack of 30)
Guide Price
Brand: Eurobrick Model and Size: Straight Brick Slips Britannia Range
Delivery Time: 1 - 2 days
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 conventional bric..
Guide Price: £22.42
£26.90 inc VAT
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Corner Brick Slips Britannia Range Corner Brick Slips Britannia Range
Guide Price
Brand: Eurobrick Model and Size: Corner brick slips
Delivery Time: 1 - 2 days
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..
Guide Price: £2.80
£3.36 inc VAT
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Brick Slips Classic Range (pack of 30) Brick Slips Classic Range (pack of 30)
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Brand: Eurobrick Model and Size: Classic Range
Delivery Time: 1 - 2 days
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 variety of..
Guide Price: £41.25
£49.50 inc VAT
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Corner Brick Slips  Classic Range Corner Brick Slips  Classic Range
Guide Price
Brand: Eurobrick Model and Size: Classic Range Corner brick slips
Delivery Time: 1 - 2 days
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..
Guide Price: £3.48
£4.18 inc VAT
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Brand: Cekol Model and Size: Cekol C-35 - 20kg
Delivery Time: 1 - 2 days
Cekol C35 Cement Based External Filler is a high quality material used for smoothing and improving of external walls of buildings. Cekol C-35 can also be used on internal walls, especially in rooms exposed to high humidity such as bathrooms, kitchens. It is a dry mixture of high quality white cement..
£26.24
£31.49 inc VAT
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60-90mm Adjustable PVC Base Profile - 2m length (pack of 10)
Guide Price
Brand: Wemico Model and Size: 37510A
Delivery Time: 1 - 2 days
60-90mm Adjustable PVC Base Profile for use insulation systems of various thickness for 6mm render depth. 2m length. Render depth 6mm.CHARACTERISTICSAdjustable to suit various insulation sizes, Helps to avoid thermal bridging, Easy to cut and safer to handle. Attached mesh aids render adhesion, Robu..
Guide Price: £196.63
£235.96 inc VAT
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8X2 Galvanised Expanded Metal Lath Sheet - 685x2438mm
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Brand: Teco Model and Size: 685x2438mm
Delivery Time: 1 - 2 days
8x2 Galvanised Expanded Metal Lath Sheet is mainly used for internal and external plaster when applied on suspended ceilings and walls. It is also suitable for encasing steel columns and beams, assisting in the protection from fire. Galvanised Steel EN 10346 DX51D Z275. Gauge: 0.4mm   ..
Guide Price: £9.79
£11.75 inc VAT
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8X2 Stainless Steel Expanded Metal Lath Sheet - 700x2500mm
Guide Price
Brand: Teco Model and Size: 700x2500mm
Delivery Time: 1 - 2 days
8x2 Stainless Sheet Expanded Metal Lath Sheet is mainly used for internal and external plaster when applied on suspended ceilings and walls. It is also suitable for encasing steel columns and beams, assisting in the protection from fire. In external applications and where there is regular exposure t..
Guide Price: £57.77
£69.32 inc VAT
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600x2500mm Galvanised Steel Rib Lath Sheet
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Brand: Teco Model and Size: 600x2500mm
Delivery Time: 1 - 2 days
600x2500mm Galvanised Rib Lath, stiffened by longitudinal ribs, for use on ceilings and partitions. For internal and external plaster key applications and anti-crack control. In external applications and where there is regular exposure to moisture, heavy condensation, persistent damp or concern that..
Guide Price: £15.23
£18.28 inc VAT
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600x2500mm Stainless Steel Rib Lath Sheet
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Brand: Teco Model and Size: 600x2500mm
Delivery Time: 1 - 2 days
600x2500mm Stainless Steel Rib Lath, stiffened by longitudinal ribs, for use on ceilings and partitions. For internal and external plaster key applications and anti-crack control. In external applications and where there is regular exposure to moisture, heavy condensation, persistent damp or concern..
Guide Price: £32.95
£39.54 inc VAT
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25mm Perforated Full System Base Bead
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Brand: Wemico Model and Size: WE625N
Delivery Time: 1 - 2 days
25mm Perforated Full System Base Bead Profile made from powder coated galvanised steel with PVC nosing which will provide additional protection against abrasion and corrosion. This product can also be used as a window/door head profile. External and Internal Corners and additional sizes made to orde..
Guide Price: £9.74
£11.69 inc VAT
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Brand: Wemico Model and Size: 95503
Delivery Time: 1 - 2 days
30mm Aluminium System Starter Track Profile for Curved Walls for 30mm insulation. Slit the back fixing leg and then bend profile around the curve of the wall...
£119.13
£142.96 inc VAT
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Ceresit CT79 Impactum Elastomeric Render 1.5 mm grain (stone texture)
Guide Price
Brand: Ceresit Model and Size: CT74 - 25kg
Delivery Time: 5 - 7 days
1.5mm grain Ceresit CT79 Impactum Elastomeric Render is a high-performance, flexible, and breathable render that provides exceptional adhesion and durability for a wide range of substrates. This render is specifically designed for use in areas with high movement and vibration, making it an ideal sol..
Guide Price: £175.00
£210.00 inc VAT
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Ceresit CT83 Strong Fix Adhesive Mortar for EPS and XPS Boards
Guide Price
Brand: Ceresit Model and Size: CT83 - 25kg
Delivery Time: 7 - 10 days
Ceresit CT83 Strong Fix Adhesive Mortar is a high-performance, cement-based adhesive specifically designed for bonding EPS (Expanded Polystyrene) and XPS (Extruded Polystyrene) insulation boards. This product is suitable for both interior and exterior applications, providing a robust and durable bon..
Guide Price: £15.86
£19.03 inc VAT
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Brand: Ceresit Model and Size: CT100 - 25kg
Delivery Time: 5 - 7 days
Ceresit CT100 Impactum is a reliable and efficient solution for creating a reinforced layer with glass fibre mesh on expanded polystyrene boards, providing additional strength and flexibility for your construction or renovation project. Its compatibility with a wide range of surfaces and its environ..
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Brand: Ceresit Model and Size: 1m x 25m - 25m2
Delivery Time: 2 - 3 working days
Ceresit CT 327 Glass-Fibre Mesh Roll is a reinforcing mesh for embedding into mortars for facades or pedestals exposed to higher stress or higher mechanical loads. It is a part of the Ceresit External Thermal Insulation Composite Systems (ETICS).CHARACTERISTICSAlkali-resistant, Slip proof, Tear proo..
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Ceresit CT80 Universal Adhesive for Mineral Wool EWI Slabs, Polystyrene and Phenolic Boards
Guide Price
Brand: Ceresit Model and Size: CT80 - 25kg
Delivery Time: In Stock 1-2 working days
Ceresit CT80 is an adhesive mortar for fastening EWI mineral wool slabs, polystyrene and phenolic boards and also for making a thin layer of base coat render reinforced with fibreglass mesh on the insulation in Insulated Renders Systems. Ceresit CT80 has very good adhesion to load-bearing, dense and..
Guide Price: £15.20
£18.24 inc VAT
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Brand: Klimas W-M Model and Size: 67mm
Delivery Time: 1 - 2 days
67mm WK-FT disk cutter is used to cut holes in EWI polystyrenes sheets. The end cap can be installed correctly on the hole and cover it to get a homogeneous surface. The The tool diameter is 66.7mm, which would give an exact 67mm hole. CHARACTERISTICSMade from tough plastic,Would cut 67mm holes..
£7.00
£8.40 inc VAT
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Brand: Klimas W-M Model and Size: Grey - 67mm
Delivery Time: 1 - 2 days
67mm Grey Polystyrene Plug KSG for EWI Polystyrene Sheets used to cover the pin shaft, blocking the thermal bridge giving a homogeneous surface.INSTALLATIONThe hole must be then covered with the grey polystyrene plug to stop any thermal bridging (last picture).CERTIFICATIONEuropean Technical Approva..
£8.06
£9.67 inc VAT
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Ceresit ZU WHITE Polystyrene and Reinforced Mesh Adhesive - Base Coat Render
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Brand: Ceresit Model and Size: ZU White - 25kg
Delivery Time: In Stock 1-2 working days
Ceresit ZU White Polystyrene and Reinforced Mesh Adhesive is a cement-based, polymer-modified adhesive specifically designed for fixing white or graphite expanded polystyrene (EPS) insulation boards to exterior walls. The EPS boards should meet the requirements of external thermal insulation composi..
£21.87 (£26.24 inc VAT)
£20.34
£24.41 inc VAT
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50mm Aluminium Window Sill Extensions WEC 751 (with full end caps - pair) - 2.5m Length.
Guide Price
Brand: Wemico Model and Size: WEC751/25 - 50mm
Delivery Time: 1 - 2 days
50mm Window Sill Extension WEC 751 is suitable for most conditions requiring the weathering of External Wall Insulation Systems and Rendering. Aluminium White Coated with peel-off low tack film to protect the section during transportation and fixing on-site. Jointing pieces to suit any section can b..
Guide Price: £16.58
£19.90 inc VAT
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30mm Aluminium Window Sill Extensions WEC 761 (with full end caps - pair) - 2.5m Length 30mm Aluminium Window Sill Extensions WEC 761 (with full end caps - pair) - 2.5m Length
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Brand: Wemico Model and Size: WEC761/30 - 30mm
Delivery Time: 1 - 2 days
30mm Window Sill Extension WEC 761 is suitable for most conditions requiring the weathering of External Wall Insulation Systems and Rendering. Aluminium White Coated with peel-off low tack film to protect the section during transportation and fixing on-site. Jointing pieces to suit any section can b..
Guide Price: £14.18
£17.02 inc VAT
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PVC Joints for Aluminium and PVC Base Tracks (pack of 100).
Guide Price
Brand: Wemico Model and Size: 3756
Delivery Time: 1 - 2 days
PVC Joints for Aluminium and PVC Base Tracks for external wall thermal insulation board...
Guide Price: £22.54
£27.05 inc VAT
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10mm PVC Base Track Clips (pack of 15). - 2.5m length
Guide Price
Brand: Wemico Model and Size: 37401
Delivery Time: 1 - 2 days
10mm PVC Base Track Clips for external wall thermal insulation board. Also available in stainless steel. Only clips. 2.5m length ..
Guide Price: £74.79
£89.75 inc VAT
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6mm Aluminium Base Track Clips (pack of 15). - 2.5m length
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Brand: Wemico Model and Size: 9124
Delivery Time: 1 - 2 days
6mm Aluminium Base Track Clips for external wall thermal insulation board. Also available in stainless steel. Only clips. 2.5m length..
Guide Price: £81.91
£98.29 inc VAT
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