Open-Cell Injection Foam Kit – Retrofit Wall Cavity Insulation (35 cu.ft., Slow-Rise, Green Foam)

Upgrade your home’s comfort without tearing down walls. This open-cell injection foam kit is designed for retrofit insulation, allowing you to fill closed cavities through small holes while keeping your drywall intact. The foam expands gently over 2–4 minutes, filling spaces behind existing fiberglass insulation and sealing hidden gaps for better comfort and lower energy bills. Highlights Produces ~35 cubic feet of slow-rise foam Excellent for sound reduction and energy savings Safe expansion rate prevents pressure on walls Green color helps confirm fill areas Ideal for older homes and hard-to-reach cavities What’s Included Spray gun + hose 8 mixing nozzles, gloves, goggle Long injection tube Two-part foam canister set Best For Exterior walls with fiberglass Thermal insulation Interior soundproofing Between-floor noise control Retrofit home insulation projects