STEICO protect L dry is a robust, render-carrying wood fibre insulation board, purpose-built for the renovation of existing masonry walls. Manufactured using a dry process, the boards are lightweight and homogenous, with straight edges for clean, easy installation.
This high-performance board is diffusion-open to allow moisture to escape, protecting the underlying masonry while improving indoor comfort year-round. Naturally resistant to algae and moss growth, it provides a durable, breathable base layer for use with EWI Pro render systems.
Sustainably made from PEFC-certified wood, STEICO protect L dry combines environmental responsibility with practical benefits—making it an ideal choice for upgrading the thermal efficiency and appearance of older masonry buildings.
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Technical Data
| Board designation |
WF - EN 13171 - Â T5 - DS(70,90)3 - Â CS(10\Y)50 - Â TR10 - WS1,0 - MU3 |
| Fire class according to  EN 13501-1 |
E |
| Declared thermal  conductivity λD [ W / ( m * K ) |
0.037 |
| Declared thermal resistance RD  [( m² * K ) /  W] |
100mm 2.70 / 120mm 3.20 |
| Board Density [kg / m³] |
approx. 110 |
| Water vapour diffusion resistance factor µ |
3 |
| Specific heat capacity [J / (kg*K)] |
2.1 |
| Compression strength [kPa] |
50 |
| Tensile strength perpendicular to face ^ [kPa] |
10 |
| Dimensional stability 48 h, 70 °C, 90 % relative air moisture |
Length Δεl ≤ 3 % | Width Δεb ≤ 3 % | Thickness Δεd ≤ 3 % |
| Waste code (EAK) |
030105 / 170201 |
| Composition |
Wood Fibre, Polyurethane Resin, Paraffin Wax |
| Thickness [mm] |
Length [mm] |
Width [mm] |
| 100 |
1200 |
400 |
| 120 |
1200 |
400 |
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For external wall insulation works, EWI Pro strongly recommends obtaining a full EWI Pro system specification, particularly where warranties or compliance are required.
Individual products purchased without an EWI Pro system design do not constitute a warranted EWI system.
Insulation products may be used independently for repairs, maintenance, flooring, or other non-EWI applications.
