Spray Foam VS Fiberglass Insulation: Which is Better for My Tiny Home?
Last updated: 7/15/2023
Spray Foam VS Fiberglass Insulation: Which is Better for My Tiny Home?
Proper insulation is crucial for maintaining comfort and energy efficiency in your tiny home. Two popular insulation options are spray foam and fiberglass. Let’s compare these materials to help you choose the best insulation for your tiny home.
Spray Foam Insulation
Pros:
- Higher R-value per inch
- Air-sealing properties
- Moisture resistant
- Can add structural strength
- Long lifespan
Cons:
- More expensive
- Requires professional installation
- Can off-gas during installation
- Difficult to remove or modify
Fiberglass Insulation
Pros:
- Cost-effective
- Easy to install (DIY-friendly)
- Widely available
- Non-flammable
- Can be eco-friendly (made from recycled glass)
Cons:
- Lower R-value per inch
- Can absorb moisture
- Settles over time, reducing effectiveness
- Doesn’t provide air sealing
- Can cause skin and respiratory irritation during installation
Comparison Table
| Factor | Spray Foam | Fiberglass |
|---|---|---|
| R-value per inch | Higher (R-6 to R-7) | Lower (R-2.2 to R-2.7) |
| Cost | Higher | Lower |
| Installation | Professional | DIY or Professional |
| Air Sealing | Excellent | Poor |
| Moisture Resistance | High | Low |
| Lifespan | 80+ years | 20-30 years |
Considerations for Tiny Homes
When choosing between spray foam and fiberglass insulation for your tiny home, consider:
- Space Efficiency: Spray foam’s higher R-value per inch can save valuable space in wall cavities.
- Climate: In humid areas, spray foam’s moisture resistance can be beneficial.
- Budget: Fiberglass is more budget-friendly, especially for DIY installations.
- Air Tightness: Spray foam provides better air sealing, which is crucial for tiny homes.
- Installation: Consider whether you want to DIY or hire professionals.
Both spray foam and fiberglass can be effective insulation options for tiny homes when used correctly. Your choice will depend on your specific needs, budget, and priorities.
For more information on tiny home construction and energy efficiency, visit our Tiny Home Construction pillar page.