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r value calculator

R-Value Calculators

Building foundations require compliance with insulation standards outlined in the Building Code. When it comes to determining compliance with insulation requirements for building foundations, there are differences between calculating R-values using the H1 tables and compliance through verification, and here at QPOD we have both calculation formats for you to use.

View Your Zone

On the map simply locate your Climate Zone, and then reference the second row in the table as highlighted.

    Choose Your Calculation Method

      H1 Tables for Compliance

      Determine QPOD Compliance to H1/AS1

      Referencing F.1.1 ‘Methods for determining construction R-values for slab-on-ground floors this states The construction R-values for concrete slab-on-ground floors, including floors of basements that contain conditioned spaces, shall be determined using: a) The performance tables described in Section F.1.2; or b) The calculation method in Verification Method H1/VM1 Appendix F. Here we will use the performance tables referenced for Raft slabs.

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      Compliance Using Verification

      Determine QPOD Compliance to H1/AS1 through Verification.

      Referencing F.1.1 ‘Methods for determining construction R-values for slab-on-ground floors this states The construction R-values for concrete slab-on-ground floors, including floors of basements that contain conditioned spaces, shall be determined using: a) The performance tables described in Section F.1.2; or b) The calculation method in Verification Method H1/VM1 Appendix F. Here we reference results based on the calculation method in Verification Method.

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