Result for: best insulation
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Professional Grade Spray Foam
Closed-Cell Spray Foam Insulation
$1.50-$2.50 per sq ft
★ 4.8/5 · Professional Contractor Reviews (500+ ratings)Closed-cell spray foam is the ultimate insulation solution, delivering superior thermal performance, moisture resistance, and air-sealing capabilities that outperform all other insulation types. It's the gold standard for new construction and challenging climate environments.
Why this one
- R-6 to R-7 per inch - highest thermal resistance rating available
- Creates an integral vapor barrier, preventing moisture infiltration
- Eliminates drafts and air leakage completely
- Excellent for hot, humid climates like Gulf Coast and southern regions
- Provides structural reinforcement in addition to thermal protection
- Works effectively in both new construction and retrofit applications
Trade-offs
- Significantly more expensive than traditional insulation methods
- Requires professional installation
- Can be challenging to retrofit in existing walls
Key specs
R-Value
R-6 to R-7 per inch
Air Sealing
Superior
Recommended Use
New construction, exterior walls, roofs
Installation Type
Professional spray application
Moisture Resistance
Excellent
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