Air Space Requirements - InfraStop® Metal & Steel Building Applications

All applications with an R-Value claim must have an enclosed air space (a cavity without free air flow) or face an open air space. Please refer to the chart below for the Air Space Requirements per application.

Application: Benefit: Air Space Specification (relative to product): Building Components (that product is attached to): Products:
Roof/New Below Purlin R-9.0 Down R-4.4 Up 1.5” Above and Open Below Above the Truss and Below the Purlin Double-Sided Reflective Insulation
Roof/New Above Purlin R-6.4 Down R-4.3 Up 0.75” (nominal) Above and Open Below Below the Roof and Above the Purlin Double-Sided Reflective Insulation
Roof/Retro Bottom of Truss R-10 Down R-3.7 Up 10” + Above and Open Below Bottom of Truss Double-Sided Reflective Insulation
Roof/Retro Bottom of Purlin R-9.0 Down R-4.4 Up 1.5” Above and Open Below Bottom of Purlin Double-Sided Reflective Insulation
Wall/New Inside of Girt R-5.3 1.5” Outside and Open Inside Inside of Girt Double-Sided Reflective Insulation
Wall/New Outside of Girt R-4.7 0.75” (nominal) Outside and Open Inside Outside of Girt and Inside Exterior Panel Double-Sided Reflective Insulation
Wall/Retro R-5.3 1.5” Outside and Open Inside Inside of Girt Double-Sided Reflective Insulation
Roof/New Above Purlin R-3.8 Down R-3.5 Up 0.75” (nominal) Above and Open Below Below the Roof and Above the Purlin Single-Sided Reflective Insulation
Roof/Retro Bottom of Truss R-6.6 Down R-3.0 Up 10” + Above and Open Below Bottom of Truss Single-Sided Reflective Insulation
Wall/New Outside of Girt R-3.7 0.75” (nominal) and Open Outside Outside of Girt and Inside Inside Exterior Panel Single-Sided Reflective Insulation
Wall/Retro R-4.2 1.5” Outside and Open Inside Inside of Girt Single-Sided Reflective Insulation
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