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    Cavity Wall U-Value Calculator ©abuildingsite.com
    Client
    Reference
    Address
    Element Name
    Calendar
    Design Standard
    External Surface Resistance, Rse
    0.04 m2K/W
    External Finish
    m2K/W
    External Leaf Masonry Construction
    Thickness (mm)
    W/m·K
    Mortar Joint Bridging (exposed layer)
    m2K/W
    Wall Tie Bridging
    m2K/W
    Cavity Fill
    Cavity Airspace Resistance
    m2K/W
    Cavity Insulation
    Thickness (mm)
    W/m·K
    Internal Leaf Masonry Construction
    Thickness (mm)
    W/m·K
    Mortar Joint Bridging (protected layer)
    m2K/W
    Internal Finish
    m2K/W
    Internal Surface Resistance, Rsi
    0.13 m2K/W
    Target U-value
    W/m²K
    Design U-value
    W/m²K
    NOTES:
    Whilst every effort has been made to ensure the accuracy of the U-values generated, this calculator should be used as design guidance only. Product manufacturer's specifications should be consulted in all instances and any proposed construction should be discussed and agreed with the relevant building control body prior to designs being finalised or any works being undertaken.
                     
                                 
    Cavity Wall U-Value Calculator v.1.0.3
    2012 ©abuildingsite.com