20mm STEICO Protect Reveal - External Window and Soffit Render Board - 1350mm x 500mm
20mm STEICO Protect Reveal - External Window and Soffit Render Board - 1350mm x 500mm
- Product Code: A1-6978
- Delivery Time: 2 - 4 weeks
- Brand: Steico
- Model: 1350mm x 500mm - 0.68m2
- Weight: 3.58kg
Our ratings on 21-10-2026:
4.8 out of 5
20mm STEICO Protect Reveal - External Window & Soffit Render Board - 1350mm x 500mm
Length: 1350mm
Width: 500mm
Thickness: 20mm
Board coverage: 0.68m2
Density: 265kg/m3
Weight/m2: 5.3kg
Weight: 3.58kg
Thermal Conductivity: 0.048W/mK
R-Value: 0.4m2K/W
Compressive Strength: 150kPa
Fire Rating (Reaction to Fire): E
20mm STEICO Protect Reveal is a rigid, vapour-open wood-fibre insulation board designed for use in ETICS (External Thermal Insulation Composite System) applications. It is the designated substrate for render in the critical areas of window reveals, door returns, and soffits, where space is limited but thermal performance is still essential. The STEICO Protect Reveal board is a high-density, wood-fibre render carrier board specifically designed for the "finishing touches" of an external wall insulation system. While the main walls use thicker T&G boards, the Reveal board is engineered to be slim enough to fit into the tight spaces around window frames and door openings.
CHARCTERISTICS
- Slim Profile: Typically supplied in a 20mm thickness, allowing it to be installed against window and door frames without obscuring the frame or interfering with the opening mechanism.
- High Density & Impact Resistance: These boards are manufactured to a very high density (approx. 265kg/m³). This provides a robust, stable surface that can withstand the physical knocks and bumps common around doorways and window sills.
- Direct Render Carrier: The surface is specifically prepared to act as a high-grip substrate for breathable lime or silicone-based render systems.
- Thermal Bridge Prevention: By insulating the reveals, it eliminates the "cold bridge" that often occurs at the junction between the window frame and the masonry, drastically reducing the risk of internal mould growth.
- Water Repellent: Impregnated with natural paraffin (wax), the board is weather-resistant during the construction phase while remaining fully vapour-permeable.
APPLICATION
- Window and Door Reveals (The Primary Use) - This is the "return" or the side of the wall that goes from the outer face of the building back towards the window or door frame.
- Window and Door Heads (The Underside) - Installed on the underside of the lintel or the top part of the window opening.
- Roof Soffits and Eaves - In certain designs where the external wall insulation needs to continue up and under an overhanging roof or eave.
- Slim Columns and Architectural Details - If the building has narrow decorative pillars, corner details, or small protrusions where using a thick board would look bulky or out of proportion.
CERTIFICATIONS
Steico_protect_rreveal_technical-data-sheet.pdf
Brand: Steico
Model: 15kg bale - pallet of 21 bales
Delivery Time: 2 - 4 weeks
STEICOzell is a loose-fill insulation made from natural wood fibres. It is blown into closed compartments (like between rafters or floor joists) or onto open loft floors using a specialised blowing machine. It provides a seamless, joint-free insulation layer that adapts perfectly to any shape. While..
Brand: Steico
Model: 1325mm x 600mm - 17.60m2
Delivery Time: 2 - 4 weeks
100mm STEICO Special Dry is a multi-purpose, rigid wood-fibre insulation board manufactured using the modern Dry Process. It is designed to be installed on top of rafters (sarking) or on the outside of timber frame studs (sheathing). Because it is produced in a dry process, it can be manufactured in..
Brand: Steico
Model: 1880mm x 600mm - 63.28m2
Delivery Time: 2 - 4 weeks
40mm STEICO Safe is a multi-functional, rigid wood-fibre insulation board designed for roofs with increased rain protection requirements. It is the only board in the range that can be used on low-pitch roofs (as low as 5°) without the need for an additional full-surface roofing felt or membrane, tha..
Brand: Steico
Model: 1190mm x 575mm - 4.1m2
Delivery Time: 2 - 4 days
80mm STEICOflex 036 is a flexible, high‑performance wood‑fibre insulation slab designed for exceptional thermal comfort, acoustic absorption and healthy building performance. Made from sustainably sourced wood and certified to rigorous European standards, it offers one of the best thermal conductivi..
Brand: Steico
Model: 1880mm x 600mm - 1.13m2
Delivery Time: 2 - 4 days
60mm STEICO Universal Dry is a high-performance, rigid wood-fibre board designed for both roof and wall applications. It is engineered to provide a wind-tight, weather-protecting "skin" for the building envelope. Using the dry manufacturing process allows for a board that is easier to handle than it..
Brand: Steico
Model: 1880mm x 600mm - 13.56m2
Delivery Time: 2 - 4 weeks
180mm STEICO Special Dry is a multi-purpose, rigid wood-fibre insulation board manufactured using the modern Dry Process. It is designed to be installed on top of rafters (sarking) or on the outside of timber frame studs (sheathing). Because it is produced in a dry process, it can be manufactured in..