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Add insulation inside the panels, not around the hardware
Garage door insulation can reduce heat transfer, but material packed against tracks or hardware may stop the door moving safely. Keep insulation within approved panel spaces.
Tracks guide rollers along the opening, while hinges, springs, cables, and sensors keep the door operating. Insulation should stay behind moving hardware and within the maker’s limits.
Sectional steel, wood, and one-piece tilt-up doors move differently. A kit made for hinged sectional panels may not fit a single-piece door, so check the design first.
Recessed panels may have a lip or frame for a cut-to-fit insert. Measure the usable cavity, including its depth, and leave space where hinges or retainers sit.
Rigid foam board can suit recessed panels when depth and instructions allow. Reflective insulation needs the specified air space, and kits may include panel-specific retainers.
Gather a tape measure, straightedge, suitable cutting tool, eye protection, and gloves. Use only retainers or adhesive approved for both the door and insulation product.
Close and secure the door, then measure each cavity separately. Cut a test piece and check its fit before trimming the rest; stop if the door is damaged or hard to operate.
Keep insulation clear of tracks, rollers, hinges, springs, lift cables, and photo-eye sensors. Do not cover sensor lenses or cross their beam with foil or retainers.
Added insulation can affect door balance, especially if hardware is worn. Follow the maker’s weight limit, then test from the wall control while standing clear and watching for scraping.
Before adding a layer to an insulated door, check its model guidance and available cavity space. Reflective material also needs its specified air gap; when unsure, consult a professional.
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