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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

6mm Stainless Steel Base Track Clips (pack of 15). - 2.5m length
Guide Price
Brand: Wemico Model and Size: 2134
Delivery Time: 1 - 2 days
6mm Stainless Steel Base Track Clips for external wall thermal insulation board. Also available in aluminium and PVC. Only clips. 2.5m length..
Guide Price: £106.55
£127.86 inc VAT
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30mm Stainless Steel Base Track (pack of 10).
Guide Price
Brand: Wemico Model and Size: 2143
Delivery Time: 1 - 2 days
30mm box shaped Stainless Steel base profile for 30mm thermal insulation board - also available in Aluminium. Larger sizes can be made to order. Connectors and render clips are also available to suit this product.If you require less than pack quantity please submit quote request...
Guide Price: £172.54
£207.05 inc VAT
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20mm Aluminium Vented Base Track - for steel construction.
Guide Price
Brand: Wemico Model and Size: 90902S
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: Ventila..
Guide Price: £12.40
£14.88 inc VAT
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25mm Perforated Full System Stop Bead.
Guide Price
Brand: Wemico Model and Size: WE825N
Delivery Time: 1 - 2 days
25mm Heavy duty Stop profile designed for thermal insulation systems with render. Profile is made from powder coated galvanised steel with PVC nosing which will provide additional protection against abrasion and corrosion. Nosing available in a range of colours (colour can be specified during checko..
Guide Price: £9.59
£11.51 inc VAT
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80x120mm Mesh Wing PVC Corner Profile - 2.5m length (pack of 100).
Guide Price
Brand: Wemico Model and Size: 3799
Delivery Time: 1 - 2 days
80x120mm PVC Corner profile with alkali resistant glass fibre mesh wings, which allows it to be cut to the required length and reduces waste. Can be folded to any angle. 2.5m length...
Guide Price: £274.64
£329.57 inc VAT
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100x150mm Mesh Wing Aluminium Corner Profile - 2.5m length (pack of 50).
Guide Price
Brand: Wemico Model and Size: 9075
Delivery Time: 1 - 2 days
100x150mm Aluminium Corner profile with alkali resistant glass fibre mesh wings, which allows it to be cut to the required length and reduces waste. 2.5m length...
Guide Price: £236.52
£283.82 inc VAT
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Brand: Wemico Model and Size: 37521
Delivery Time: 1 - 2 days
3mm PVC Corner profile with an extended arris and 100x150mm alkali resistant glass fibre mesh wings, which allows it to be cut to the required length and reduces waste. 2.5m length...
£210.25
£252.30 inc VAT
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Brand: Wemico Model and Size: 3793
Delivery Time: In Stock 1-2 working days
3mm PVC Render Stop Bead with alkali-resistant glass fibre mesh for 3m thick render...
£4.19
£5.03 inc VAT
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15mm PVC Edge Bead (pack of 25).
Guide Price
Brand: Wemico Model and Size: E15
Delivery Time: 2 - 3 working days
15mm PVC Edge Bead is an extruded asymmetric profile with one perforated leg and pre-formed arris to accommodate jointing material. It is used to define and protect exposed plasterboard edges...
Guide Price: £37.58
£45.10 inc VAT
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6mm PVC Edge Bead with Mesh Wing (pack of 25).
Guide Price
Brand: Wemico Model and Size: 37517
Delivery Time: 2 - 3 working days
6mm PVC Edge Bead with mesh wing is an extruded asymmetric profile with one perforated leg and pre-formed arris to accommodate jointing material. It is used to define and protect exposed plasterboard edges. It has an alkali-resistant glass fibre mesh for joining cut edges on plastered curtain walls,..
Guide Price: £181.95
£218.34 inc VAT
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PVC Top Section with Mesh Wing of the Render Only Compression Joint (pack of 10).
Guide Price
Brand: Wemico Model and Size: 3749
Delivery Time: 2 - 3 working days
PVC Top Section with Mesh Wing of the Render Only Compression Joint for thin coat render. Ideally suited to timber framed buildings. The aluminium base section is supplied pre-coated white, but can be powder coated to any colour if required. ..
Guide Price: £282.80
£339.36 inc VAT
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Aluminium Bottom Section of the Render Only Compression Joint (pack of 10).
Guide Price
Brand: Wemico Model and Size: 91003
Delivery Time: 2 - 3 working days
Aluminium Bottom Section with Mesh Wing of the Render Only Compression Joint for thin coat render. Ideally suited to timber framed buildings. The aluminium base section is supplied pre-coated white, but can be powder coated to any colour if required. ..
Guide Price: £191.70
£230.04 inc VAT
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Brand: Ceresit Model and Size: CT240
Delivery Time: In Stock 1-2 working days
Ceresit CT 240 Winter is a high quality accelerating additive for wet renders and paints drying under low temperatures in late autumn and early spring times, especially when the temperature fall below zero in the nights. This additive can be used for thin-coat acrylic renders - CT 60, CT 63, CT 64, ..
£8.27
£9.92 inc VAT
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Brand: Ceresit Model and Size: CT280
Delivery Time: In Stock 1-2 working days
Ceresit CT 280 Winter is a high quality accelerating additive for ETICS and wet renders drying under low temperatures in late autumn and early spring times, especially when the temperature fall below zero in the nights. This additive can be used for cement based mineral adhesive mortars - CT 83, CT ..
£6.23
£7.48 inc VAT
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Brand: Knauf Model and Size: 15kg
Delivery Time: 1 - 2 days
15kg Knauf Aquapanel Basecoat Primer is a pre-mixed, white coloured, water-based emulsion for priming base coated substrates. It provides a high quality dry base that can withstand the extreme weathering effects of wind, rain and snow. Knauf Aquapanel Exterior Primer can be used for exterior walls i..
£92.64
£111.17 inc VAT
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Brand: Knauf Model and Size: 1200x900mm - 1.08m2
Delivery Time: In Stock 1-2 working days
12.5mm Knauf Aquapanel Exterior Cement Board provides a solid, dry base that can withstand the extreme weathering effects of wind, rain, and snow. It makes an ideal substrate for directly applied render finishes and can be used for exterior walls in ventilated systems, exterior ceilings, and soffits..
£27.88
£33.46 inc VAT
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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 in the..
£17.00
£20.40 inc VAT
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Brand: ZVM Model and Size: 25mm x 25mm - 2.5m
Delivery Time: In Stock 1-2 working days
25mm x 25mm Flexible PVC Thin Coat Render and Plaster Corner Bead is use on all plastered and rendered corners on curved edges arches and walls to get a true sharp corner. It can be used to create decorative plaster curves and arches and protects the plaster and render at its most vulnerable point.A..
£3.20
£3.84 inc VAT
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Brand: Rockwool Model and Size: 1200mm x 600mm - 3.60m2
Delivery Time: 1 - 2 days
30mm Rockwool Dual Density Slab is a rigid thermal insulation slab specifically created for external wall applications to go directly under render. It is made from volcanic rock, thus extremely durable and fire resistant. The higher density outer surface of the slab is to take the render, whilst the..
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Brand: Teco Model and Size: 12mm - 3m
Delivery Time: 1 - 2 days
12mm Galvanised Movement Mesh Beads are used to overcome movement tolerances in plaster and render finishes minimising racking in finished coat. It can also be used to act as a stop barrier for when a change in finish is required or type of render finish. 3m length. Galvanised steel EN 10346 DX51D Z..
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Brand: Teco Model and Size: 16mm - 3m
Delivery Time: 1 - 2 days
16mm Stainless Steel Movement Mesh Beads are used to overcome movement tolerances in plaster and render finishes minimising racking in finished coat. It can also be used to act as a stop barrier for when a change in finish is required or type of render finish. 3m length.InstallationUse appropriate f..
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Brand: Teco Model and Size: 10mm - 3m
Delivery Time: 1 - 2 days
10mm Galvanised Steel Plasterboard Edge Bead that is used to reinforce plasterboard edges by enclosing them in a rotective steel enclosure. It can be used with thin coat plaster or drylining paper tape. Galvanised steel EN 10346 DX51D Z275.InstallationUse appropriate fixings.Always ensure that compa..
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30mm Eaves Flashing, Osill and Window Sill Extensions (with full end caps-pair) - 2.5m Length. 30mm Eaves Flashing, Osill and Window Sill Extensions (with full end caps-pair) - 2.5m Length.
Guide Price
Brand: Wemico Model and Size: WEC721/30
Delivery Time: 1 - 2 days
30mm Eaves Flashing and Window Sill Extension 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..
Guide Price: £18.46
£22.15 inc VAT
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Brand: ZVM Model and Size: 10mm - 3m
Delivery Time: 5 - 7 days
10mm PVC Rustication Profile - Render Groove Bead is a decorative element commonly used in architecture to significantly increase the visual value of the entire building. These decorative profiles can be painted with acrylic, silicone or silicate paints.Depth of rustication: 10mm    R..
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Brand: ZVM Model and Size: 10mm - 3m
Delivery Time: 5 - 7 days
10mm PVC Rustication Profile with Mesh - Render Groove Bead is a decorative element commonly used in architecture to significantly increase the visual value of the entire building. These decorative profiles can be painted with acrylic, silicone or silicate paints.Depth of rustication: 10mm  &nb..
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Brand: Klimas W-M Model and Size: 50mm-
Delivery Time: 1 - 2 days
50mm Screwed-in Helical Fastener WK-DS is for fixing lightweight non-structural components (max. 5 kg/piece) on polystyrene insulation, for example, fixing elements such as signboards, building numbers, mailboxes, lighting fixtures, motion sensors, etc. They are made from high-quality polyamide and ..
£6.50
£7.80 inc VAT
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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.
Guide Price
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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