Seal Cracks and Gaps with Spray Foam
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Does Every Gas Company Do This? #homerepair #atticinsulation #hvac #gas
What happens here
Beyond insulation, an important aspect of home energy efficiency is sealing air leaks. The video shows a worker using a spray foam gun to apply expanding foam sealant to cracks and gaps, specifically highlighting a joist bay where the basement ceiling meets the foundation or exterior walls. This process is crucial for preventing conditioned air from escaping and unconditioned air from entering the home, complementing the attic insulation efforts. The narrator refers to this as sealing 'every crack'.
Goal: Reduce air leakage throughout the home's envelope.
Tools and materials
- Gloves — Protecting hands from sticky foam
- Safety Glasses — Protecting eyes from foam or fumes
- Spray Foam Gun — Precisely applying expanding foam sealant
- Utility Knife — Trimming excess hardened spray foam
- Expanding Spray Foam Sealant Great Stuff — Sealing air leaks