Direct answer
Properly installed foam is inert, doesn't settle, and doesn't degrade. It lasts the lifetime of the building. Workmanship warranty terms are set by your matched partner contractor; the foam material itself outlives the home regardless.
Authoritative sources
- US Department of Energy ↗
DOE Energy Saver guide to insulation types, R-values, and recommended applications.
- IRS Section 25C ↗
Energy Efficient Home Improvement Credit, up to $1,200/yr for qualifying insulation work.
- Energy Star ↗
Energy Star recommendations for attic and wall insulation R-values by climate zone.
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