Insulation
10 articles in this category.
Spray Foam Insulation Cost in 2026: Breakdown
Spray foam runs $1.00–$3.50+ per sq ft installed. Here's exactly what drives the price, what's in a quote, and how to avoid overpaying.
Read moreOpen-Cell vs Closed-Cell Spray Foam: Which?
Open-cell foam costs half as much but performs differently under moisture and cold. Here's how to pick the right foam for your specific job.
Read moreSpray Foam R-Value Guide: How Much Is Enough?
R-value determines how well your insulation works — and how much you spend. Here's what the DOE recommends by climate zone and application.
Read moreSpray Foam Attic Insulation: Costs & What to Expect
Spray foam attic insulation costs $1.50–$3.50/sq ft installed. Learn which foam type works best, how thick to go, and what the installation involves.
Read moreSpray Foam vs Fiberglass: Cost & Performance
Fiberglass costs $0.30–$0.80 per sq ft. Spray foam costs $1.00–$3.50. The difference in long-term savings often closes that gap — here's how.
Read moreDIY Spray Foam: Kits, Costs, and When to Hire
DIY spray foam kits genuinely work for small gaps and rim joists. Here's what kits cost, what they cover, where DIY beats a contractor, and where it doesn't.
Read moreSpray Foam Tax Credits 2026 (IRA Section 25C)
The IRA Section 25C credit covers 30% of spray foam material costs, up to $1,200 per year. Here's exactly who qualifies, which foam types count, and how to file.
Read moreSpray Foam for Crawl Spaces: Costs & Moisture
Crawl spaces need closed-cell spray foam on walls and rim joists, not fiberglass on the floor above. Here's the cost breakdown, thickness requirements, and moisture strategy.
Read moreHow Long Does Spray Foam Insulation Last?
Properly installed spray foam lasts 80+ years — longer than most houses. Here's what drives longevity, what can shorten it, and what warranties actually cover.
Read more7 Spray Foam Mistakes That Cost Homeowners Thousands
Each of these spray foam mistakes has cost homeowners $500–$8,000 to fix. Here's how to spot them before the crew shows up — and what to ask your contractor.
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