Introduction
Poor insulation is one of the biggest causes of high energy bills. Adding or upgrading insulation in your walls, attic, and floors can dramatically improve your home's energy efficiency and comfort. Here's how to get started.
What You'll Need
- Fiberglass insulation batts or rolls
- Foam board insulation
- Spray foam insulation
- Vapor barrier
- Utility knife & straightedge
- Safety gloves, goggles & dust mask
- Staple gun
Step 1: Identify Problem Areas
Check your attic, walls, basement, and crawl space for missing or inadequate insulation. Common signs include cold floors, drafty rooms, and high heating/cooling bills.
Step 2: Choose the Right Insulation
Different areas require different types of insulation. Fiberglass batts work well for walls and attics, foam board is ideal for basements, and spray foam seals gaps and hard-to-reach areas.
Step 3: Prepare the Area
Wear protective gear — gloves, goggles, and a dust mask — before handling fiberglass insulation. Clear the area of debris and ensure it's dry before installing.
Step 4: Install Insulation Batts
Cut fiberglass batts to fit snugly between wall studs or attic joists. The vapor barrier (if included) should face the warm side of the wall. Secure with a staple gun.
Step 5: Seal Gaps with Spray Foam
Use spray foam to fill gaps around pipes, electrical outlets, and window frames. This prevents air infiltration that undermines your insulation's effectiveness.
Step 6: Install Vapor Barrier
In basements and crawl spaces, install a plastic vapor barrier over the insulation to prevent moisture from damaging the material.
Pro Tips
- Check your insulation's R-value — higher R-values mean better insulation performance.
- Attic insulation offers the best return on investment for most homes.
- Seal air leaks before adding insulation for maximum efficiency.
Find all the insulation supplies you need in our Insulation & Soundproofing collection at ProFix Home Repair.