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Prescriptive Checklist for the 2018 Washington State ...

Prescriptive Checklist for the 2018 Washington State ...

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Apr 20, 2012 · Insulation applied to the exterior of basement walls, crawlspace walls and the perimeter of slab-on-grade floors shall have a rigid, opaque and weather-resistant protective covering to prevent the degradation of the insulation’s thermal performance. ☐ R401.3 Certificate A permanent certificate shall be completed by the builder or

  Thermal, Walls, Insulation

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