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Recticel  |  SKU: IREWC050-6

50mm Recticel Eurowall Cavity Wall Insulation Board 1200mm x 450mm - 6 Boards

£29.35 Ex VAT
£35.22 Inc VAT
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Thickness: 50mm
50mm
75mm
100mm

50mm Recticel Eurowall Cavity Wall Insulation Board is a partial fill cavity wall solution with a rigid polyurethane foam core. Belonging to the PIR range of insulation boards, it has a low thermal conductivity of just 0.022 W/mK which means maximum heat retention within the building structure. 

These 50mm Recticel cavity boards have precision-cut straight edges, which means that the boards can butt up tightly against one another, minimising air gaps. They are flanked on either side by a multi-layered kraft and metal foil facing, which acts as a gas diffusion layer across air space. 

50mm Eurowall boards come in 1200mm x 450mm, ideal to fit between brick ties in masonry cavity walls. They can be used in both new builds and extensions and will enhance the thermal performance of any cavity space.

Thickness: 50 mm
Length: 1200 mm
Width: 450 mm
No. Boards: 6
Coverage: 3.24 m²
R-value *: 2.25 m²K/W
Thermal conductivity: 0.022 W/mK
Fire Certification: Euroclass F

 

* The R-value denotes the resistance to heat flow – the higher the R-value the more insulating the product is.

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    • Size
      1200mm x 450mm
    • Coverage (m²)
      3.24
    • Thickness
      50mm
    • Material
      PIR

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    What is PIR Insulation Board?

    Polyisocyanurate (PIR) insulation is a type of rigid foam insulation board backed with a foil layer, that is renowned for its exceptional thermal performance. It is a strong and light type of foam that keeps structures warm by trapping air inside. PIR insulation board is lightweight, durable, and offers excellent fire resistance and thermal insulating properties, making it a super DIY-friendly solution that can easily be cut to size to fit rafters to be used in roof insulation, between joists as loft insulation, within stud walls and used as Cavity Wall Insulation.

    What Sizes Do Recticel Eurothane PIR Insulation Boards Come in?

    Our Recticel insulation boards all measure a standard size of - 2400mm x 1200mm, and are available in a variety of thicknesses to suit every size of floor, cavity or project such as:

    25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 120mm and 150mm.

    The most popular sizes are 100mm Recticel, 50mm Recticel and 25mm Recticel. 

    Recticel Eurothane Insulation Boards - How to Install

    There are many different uses for PIR insulation board, so the method to install your Recticel insulation may vary. However, generally Recticel is intended to fit the depth of the cavity, such as when installing between joists as loft insulation, or Cut to fit the height and width required using a utility knife, or handsaw for thicker boards, to achieve a friction-fit  - meaning the boards should fit tightly and stay easily in place with no additional fixtures and fittings.

    For precise installation instructions for your specific use case, it is recommended to consult your builder, architect or building inspector to ensure installation complies with building regulations. 

    Recticel PIR Insulation Fire Rating

    Recticel PIR insulation boards are rated Euroclass F Reaction to Fire classification, according to BS EN 13501-1

    Recticel PIR Insulation R-value

    The R-Value of Recticel PIR Boards increases with the thickness of the board. The higher the R-Value, the greater the resistance of the board and therefore the more effective the thermal insulation. 

    Recticel PIR boards have a thermal conductivity of 0.022 W/m.K.

    R-Value (m².K/W)

    • 25mm  - 1.10 
    • 30mm - 1.35 
    • 40mm - 1.80
    • 50mm - 2.25
    • 60mm - 2.70
    • 70mm - 3.15
    • 75mm - 3.40
    • 80mm - 3.60
    • 90mm - 4.05
    • 100mm - 4.50
    • 120mm - 5.45
    • 150mm - 6.80

    To calculate the U Value of your wall, you must consider the entire structure of the wall, including air gaps. A general formula for calculating the U-value:

    U = 1 over R

    Where:

    U = U Value

    R = The total thermal resistance of the building component, including all layers of materials and air gaps.

    Recticel PIR Insulation Thermal Conductivity 

    Recticel PIR boards have a thermal conductivity of 0.022 W/m.K.

    Recticel PIR Insulation Moisture Resistance

    Recticel boards are made of a closed-cell structure which means they do not specifically retain moisture, although they are not entirely waterproof.

    Thickness: 50mm
    50mm
    75mm
    100mm