How to Install Insulation on Your Garage Door Using A BlueTex® Garage Door Insulation Kit

An uninsulated garage door is one of the biggest sources of heat gain and heat loss in a home, and it's one of the easiest to fix. The BlueTex™ Residential Garage Door Insulation Kit is designed for panel-style sectional doors (the kind that roll up on tracks in individual sections), and the whole job can be completed in an afternoon with no special skills required.

What's in the kit?

Each kit includes 22"-wide rolls of BlueTex™ 2mm Pro foil insulation, double-sided tape for bonding the insulation to each panel, white seam tape for finishing the edges, and optional screws and washers if you prefer a mechanical fastener over adhesive alone. Kits are sized for either 4-panel or 5-panel doors depending on your specific door configuration - check measurements!

Getting started

Keep the door closed throughout the early stages of the install. Begin by wiping down each panel, a damp rag to remove dust and grime is all you need. Then apply the double-sided tape along the horizontal seam between each row of panels, as well as vertically on the side edges. Leave the paper liner in place for now; you'll peel it back section by section as you go.

Installing panel by panel

Cut your first piece of BlueTex™ 2–3 inches wider than the door. Open the door slightly, just enough to expose the seam at the bottom, then press the top edge of the insulation firmly against the exposed tape. Once the top edge is anchored, peel the liner from the bottom tape strip and press the lower edge down, trimming any excess flush with the door bottom. Repeat this process upward, row by row, until the entire door surface is covered. Overlapping between rows is fine and will be cleaned up in the finishing step.

One critical rule: once double-sided tape is applied, do not fully open the door. Opening it prematurely will cause the tape to grab unintended surfaces and create a frustrating mess.

Finishing up

Once all panels are covered, use a sharp knife to slice through both layers of insulation along each hinge line across the full width of the door. This frees each panel to flex independently as the door opens. Then work your way through the door panel by panel, opening it to a comfortable working height, and apply white seam tape around all four edges of each panel. Half the tape sits on the insulation, the other half on the metal door frame. The result is a clean, professional-looking finish that locks the garage door insulation securely in place.

Doors with high-wind horizontal bracing can still be insulated: simply remove one brace at a time, install the BlueTex™ behind it, then reinstall the brace before moving to the next one.