Fiberglass
Batt Insulation
The most widely used insulation solution. Cost-effective, long-lasting, and proven - fiberglass batts can maintain their R-value for 100 years when properly installed.
What It Is
Fiberglass batt insulation is made from thin glass fibers woven into flexible blankets. It's the most common insulation type in the US, trusted for its reliability, affordability, and thermal performance across decades of use.
Batts are cut to fit between wall studs, floor joists, and ceiling beams. When correctly installed, fiberglass can reduce energy bills by 40-50% and maintain its R-value for up to 100 years.
Key Benefits
- Most cost-effective insulation option ($0.40-$0.50 per sq ft)
- R-value of 2.2-4.3 per inch depending on thickness
- Long lifespan ”” maintains R-value for up to 100 years
- Fire retardant and noise-reducing
Where It's Applied
- Interior walls between studs and joists
- Attics and roof spaces
- Basements and crawl spaces
- Floors and ceilings
- HVAC ducts
- New construction framing
Best For
New construction projects and budget-conscious retrofits where long-term thermal performance is the goal. The most accessible and widely applicable insulation solution for residential and commercial spaces.