Your 2025 Guide to Choosing the Right Insulation
Rising energy costs make efficiency more important than ever. The right insulation doesn’t just save money—it also improves comfort and air quality. In this guide, we compare fiberglass, spray foam, and cellulose insulation and share tips to maximize performance.
Fiberglass Insulation
- Pros: Cost-effective, versatile, easy to install.
- Cons: Can be itchy/irritating, may settle over time.
- Best for: Standard wall cavities and attics; budget-friendly projects.
Browse our fiberglass insulation products.
Spray Foam Insulation
- Pros: Excellent air sealing, high R-value, long-lasting.
- Cons: Higher cost; usually requires professional installation.
- Best for: Irregular shapes, attics, crawlspaces, and sealing gaps.
See our spray foam solutions.
Cellulose Insulation
- Pros: Eco-friendly, good soundproofing, fire-resistant.
- Cons: Can settle over time; may need replacement sooner than fiberglass/spray foam.
- Best for: Sustainable builds and retrofits.
Explore our cellulose insulation options.
Tips for Optimal Insulation Performance
- Seal air leaks before installing insulation (windows, doors, outlets).
- Ensure proper installation to avoid gaps and voids.
- Choose an R-value appropriate for your climate zone.
- Maintain ventilation to prevent moisture and mold.
Why Choose D7 Supply?
At D7 Supply, we stock 50+ SKUs across fiberglass, spray foam, and cellulose—plus accessories. Whether you’re a contractor or homeowner, our team helps you choose the right product for your project.
Explore our full insulation collection.
FAQs
What insulation type saves the most energy?
Spray foam generally delivers the highest R-value and best air sealing, but fiberglass and cellulose can be excellent, cost-effective choices.
Can I install insulation myself?
Fiberglass can be DIY-friendly. Spray foam typically requires a licensed installer.
How long does insulation last?
Fiberglass and spray foam can last for decades; cellulose may need replacement sooner due to settling.
