Spray foam insulation — open or closed cell — requires substrate preparation and coverage documentation for permit compliance, energy rebates, and manufacturer warranty. Here's what to photograph.
Before application: Substrate condition, any moisture issues, existing insulation removed, and utility rough-in visible.
After application: Full coverage of each cavity or surface being sprayed, depth markings or reference for R-value, and any thermal boundary details.
Product documentation: Manufacturer, product number, and coverage data from the container labels.
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