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Thermal insulation THERMACLASS
polyisocyanurate (PIR) foamrigid panelexterior

thermal insulation
thermal insulation
thermal insulation
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Characteristics

Type
thermal
Material
polyisocyanurate (PIR) foam
Format
rigid panel
Location
exterior
Use
wall
Technical characteristics
high-performance
Fire Class
Euroclass E
Options
lightweight
Thermal conductivity

0.021 W/(m.K)

Thermal resistance

4.25 m²K/W, 5.45 m²K/W, 6.65 m²K/W

Length

1,190 mm
(47 in)

Width

450 mm
(18 in)

Thickness

90 mm, 115 mm, 140 mm
(3.54 in, 4.53 in, 5.51 in)

Description

Thermaclass Cavity Wall 21 is an easy to install, polyisocyanurate (PIR) insulation board for full fill cavity wall applications, with excellent thermal performance (0.021 W/m.K). Featuring a low emissivity foil facing, it can be installed with up to a 10mm residual cavity (to support ease of installation and accommodate mortar squeeze) or as a full fill solution with no residual cavity. Product Features Lightweight 1190 x 450mm boards (installed dimensions) Tongue and groove edge profile Low emissivity foil facing BBA approved – certificate 16/5343 (Full Fill Cavity Walls) Fire Classification Euroclass E Reaction to Fire classification, according to BS EN 13501-1. Products with this level of classification are not provided with a rating for smoke emission. Product Benefits Thermal Performance - Excellent thermal performance with a thermal conductivity of 0.021 W/m.K, reducing the thickness of insulation required to hit the target U-value. High Performance Facer - Low emissivity foil facing provides improved thermal performance in sealed cavity air spaces, improving the achievable U-value (based on a residual cavity of 10mm). Easy to Install - The boards are sized to fit standard cavity wall tie spacing. They are light and rigid, assisting with ease of transportation, handling and fitting. BBA Certified - Thermaclass Cavity Wall 21 has been assessed by the BBA as fit for use in defined full fill cavity wall applications if installed, used and maintained as set out in the certificate. Please read the certification at insulation-UK.com/BBA for full details and restrictions.

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