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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

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
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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
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Brand: Rockwool Model and Size: 1000mm x 600mm - 2.40m2
Delivery Time: 3 - 5 weeks
60mm Rockwool Frontrock MAX E is a rigid dual-density thermal and acoustic insulation slab made from volcanic rock, making it extremely durable, fire-resistant, and specifically designed for external wall applications to be placed directly beneath render. The higher density surface of the slab is in..
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Brand: Ceresit Model and Size: CT190
Delivery Time: In Stock 1-2 working days
Ceresit CT190 Adhesive and Reinforcing Mortar is an element of the Ceresit Ceretherm ETICS (External Thermal Insulation Composite Systems) for use with mineral wool insulation. It is a cement-based adhesive and reinforcing mortar designed for bonding and embedding mineral wool insulation slabs onto ..
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50mm Soffit Flashing and Window Sill Extensions (with full end caps-pair) - 2.5m Length. 50mm Soffit Flashing and Window Sill Extensions (with full end caps-pair) - 2.5m Length.
Guide Price
Brand: Wemico Model and Size: WEC741/50
Delivery Time: 1 - 2 days
50mm Aluminium Soffit Flashing and Window Sill Extensions 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. J..
Guide Price: £21.03
£25.24 inc VAT
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Brand: Wemico Model and Size: D10
Delivery Time: 1 - 2 days
10mm PVC Drip Beads are designed for various rendering applications and external wall insulation providing impact and rainwater protection, installed above the damp proof courses or window and door reveals. Their main function is to provide a drip for rainwater and prevent return of the water o..
£2.00
£2.40 inc VAT
Brand: Wemico Model and Size: 30351
Delivery Time: 1 - 2 days
6mm Expantion Joint Profile with soft PVC centre section for insulation systems, with alkali-resistant glassfibre mesh. Movement: +/-5mm. This profile is recommended for vertical use only. ..
£109.19
£131.03 inc VAT
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6mm PVC Base Profile - length 2m (pack of 15)
Guide Price
Brand: Wemico Model and Size: 37500
Delivery Time: 1 - 2 days
6mm PVC base profile for use between DPC and insulation systems. Available in a range of widths and render thicknesses. Can also be used in conjunction with a PVC angle section as a 2 part  base starter track. Please contact us for details...
Guide Price: £216.78
£260.14 inc VAT
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6mm Mesh Wing PVC Window Frameseal Bead 6mm Mesh Wing PVC Window Frameseal Bead
Guide Price
Brand: Wemico Model and Size: 37806
Delivery Time: 2 - 3 working days
6mm self adhesive PVC profile for use on window reveals or door frames. Attached to the frame with a foam tape, the frameseal has an adhesive strip to enable use of a protective film to be applied during the rendering process, which is snapped off on completion...
Guide Price: £6.25
£7.50 inc VAT
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Brand: Wemico Model and Size: 37103
Delivery Time: 2 - 3 working days
6mm self adhesive PVC profile for use on window reveals or door frames. Attached to the frame with a foam tape, the frameseal has an adhesive strip to enable use of a protective film to be applied during the rendering process, which is snapped off on completion...
£165.89
£199.07 inc VAT
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Ceresit CR65 Waterproofing (Tanking) Slurry - 25kg
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Brand: Ceresit Model and Size: CR65
Delivery Time: In Stock 1-2 working days
Ceresit CR65 Waterproofing Slurry is a cement-based coating designed for waterproofing surfaces like concrete and masonry. It creates a protective barrier against water penetration, ideal for both indoor and outdoor use, including basements, foundations, and retaining walls. CR65 is easy to apply wi..
£29.98 (£35.98 inc VAT)
£27.88
£33.46 inc VAT
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Brand: Ceresit Model and Size: CR166 - Bucket
Delivery Time: In Stock 1-2 working days
Ceresit CR166 is a high-performance, two-component flexible waterproofing slurry designed to provide a durable and reliable barrier against water ingress. Formulated with a unique blend of cementitious binders, polymers, and special additives, this waterproofing solution offers exceptional flexibili..
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Ceresit CT77 Mosaic Render grain 1.2mm - 1.8mm
Guide Price
Brand: Ceresit Model and Size: CT77
Delivery Time: 5 - 7 days
1.2mm - 1.8mm grain Ceresit CT 77 Mosaic Render is a decorative, textured wall coating suitable for both interior and exterior use. It has a grain size of 1.2mm to 1.8mm, which gives it a subtle, mosaic-like appearance. The product contains marble-like aggregates that contribute to this aesthetic. C..
Guide Price: £75.00
£90.00 inc VAT
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Custom Cut Oversill and Window Sill Flashing (with full end caps-pair) width from 30mm to 200mm - length up to 2.5m Custom Cut Oversill and Window Sill Flashing (with full end caps-pair) width from 30mm to 200mm - length up to 2.5m
Guide Price
Brand: Wemico Model and Size: WEC 761 30-200mm
Delivery Time: 3 - 5 days
Our custom-cut Aluminium oversill and window sill flashings are durable, low maintenance quality beads for external wall insulation, suitable for most weather conditions and custom made to fit any project requirement. In order of protecting the section during transportation and fixing, extensions ar..
Guide Price: £44.38
£53.26 inc VAT
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Brand: Ceresit Model and Size: 14cm x 28cm - free delivery
Delivery Time: In Stock 1-2 working days
Plastic trowels are used in finishing of the insulated textured renders - silicone, acrylic or silicate. CHARACTERISTICS: plastic handle lightweight and sturdy size: 14cm/28cm..
£7.51
£9.01 inc VAT
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Brand: ZVM Model and Size: 13cm/25cm
Delivery Time: 1 - 2 days
Finishing trowel is used in smoothing and finishing the surface of concrete or plaster. It helps to compact the surface and add to the quality and durability of work. It is crafted from the highest quality materials using the best design standards.CHARACTERISTICS:plastic handlelightweight and s..
£16.50
£19.80 inc VAT
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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.  ..
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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
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Brand: Knauf Model and Size: 100mm x 50m
Delivery Time: 2 - 3 working days
Aquapanel Exterior Joint Tape is a 100mm wide, glass fibre tape with an alkaline resistant coating. It is embedded into Aquapanel Exterior Joint Filler to reinforce exterior joints as part of the Aquapanel Exterior System.INSTALLATIONAquapanel Cement Boards must be dry, clean and dust-free and fixed..
£36.30
£43.56 inc VAT
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Brand: Knauf Model and Size: 1000mm x 50m
Delivery Time: 2 - 3 working days
Knauf Aquapanel Exterior Reinforcing Mesh is a 200mm wide glass fabric mesh designed to resist sliding. It is manufactured from glass filament fibres with a nominal diameter of <5m. It is used to reinforce Aquapanel Exterior Basecoat and Aquapanel Joint Filler.INSTALLATIONApply Aquapanel Ext..
£207.68
£249.22 inc VAT
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Brand: Knauf Model and Size: 200mm x 50m
Delivery Time: 1 - 2 days
200mm Knauf Aquapanel Exterior Reinforcing Tape is used to reinforce joints in exterior walls where a coat of paint instead of render finish is to be applied on the Aquapanel Exterior Basecoat.INSTALLATIONApply Aquapanel Joint Filler over the joints and embed Aquapanel Exterior Reinforcing Tape.CERT..
£81.13
£97.36 inc VAT
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Brand: Knauf Model and Size: 100mm x 50m
Delivery Time: 1 - 2 days
Aquapanel Interior Joint Tape is a 100mm wide, glass fibre tape with an alkaline resistant coatingfor use where Aquapanel Interior Panel is to be jointed using tile adhesive.CERTIFICATIONManufactured in the UK to EN 520, BS 1191 and BS EN ISO 9000 using advanced production facilities,ISO 14001 certi..
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Brand: Knauf Model and Size: 4.2mm x 25mm
Delivery Time: 1 - 2 days
4.2mm x 25mm Aquapanel Maxi SN25 needlepoint screws have been specially developed for fixing Aquapanel Cement Board on to timber and metal frameworks of differing thicknesses. Aquapanel Maxi Screws SN25 can be used for both wall and ceiling applications in interior and exterior applications. Aquapan..
£76.07
£91.28 inc VAT
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Brand: Ceresit Model and Size: FG-038
Delivery Time: In Stock 1-2 working days
The expanding foam gun is a tool which gives a much greater degree of control over the product you are using which not only increases the accuracy of the application but cuts down on un-wanted and unnecessary wastage. Foam gun is manufactured to the highest quality controls and strong construction t..
£15.02
£18.02 inc VAT
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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 used with all t..
£12.00
£14.40 inc VAT
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Brand: Euroform Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 2 - 3 working days
9mm Versarend is an A1 non‑combustible, exterior‑grade render carrier board designed as a direct render base with mesh‑reinforced facings, offering a safe, durable, and easy‑to‑install solution for external facades. Euroform Versarend offers a specification‑ready, non‑combustible render carrier boar..
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Brand: Euroform Model and Size: 2400mm x 800mm - 0.96m2
Delivery Time: 2 - 3 working days
12.5mm Euroform Easyboard a high-performance exterior-grade fibre cement board, engineered to combine the inherent durability of Ordinary Portland Cement (OPC) with ease of installation. It serves as a versatile and robust solution for both external sheathing applications and internal tile backing i..
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Brand: Euroform Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
12.5mm Euroform Versarend is a non-combustible exterior grade direct render base cement board with mesh reinforcing facings that can be easily fixed with screws. It can be easy cut, score and snap way, the reinforcing mesh allows it to be easily rendered. Euroform Versarend has a taper on the t..
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9mm Renderflex Polymer Render Carrier Board
Guide Price
Brand: RCM Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 3 - 5 days
9mm Renderflex is a cellulose/fibre cement based render carrier board, primarily used as base board for polymer modified render systems which do not include insulation added to the board before rendering. It is made from a mixture of cellulose fibres, sand, Portland cement and some additives, o..
Guide Price: £73.38
£88.06 inc VAT
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10mm Versapanel Cement Bonded Particle Board - Square Edge 10mm Versapanel Cement Bonded Particle Board - Square Edge
Guide Price
Brand: Euroform Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
10mm Versapanel Cement Bonded Particle Board is an innovative building material that is durable and flexible, meeting the requirements of moisture tolerance and fire resistance. It is manufactured from wood particles and cement and contains no asbestos or other hazardous volatiles. The board feature..
Guide Price: £42.38
£50.86 inc VAT
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