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How to Install the EcoPro Garage Door Insulation Kit

Difficulty: Easy • 7 Steps

Here we show you how to insulate your garage door effectively, with very little DIY experience.

This is a cost-effective way to insulate your garage with high thermal results. We use high-quality reflective Multifoil Insulation that’s made from 6 layers of foil with wadding in between. This will help retain heat within your garage whilst preventing cold draughts and cold bridging.

Steel garage doors have very little insulating properties and any warm air will escape. They’re prone to cold bridging and allowing warm air to escape.

We would recommend fully insulating your whole garage if you’re wanting to use it as a liveable space. Take a look at our Garage Insulation Kit.


Once installed you’ll feel a significant difference in the reduction of draughts and condensation inside your garage. If you usually heat your garage your energy bills will reduce and achieve a much more comfortable temperature whilst relying on heating less. A quick and easy way to make a huge difference in your garage especially if you’re wanting to use it as a livable space or store equipment that could get damaged due to temperature changes.

Method Steps

  1. Prep the Garage Door

    Clean the back of the garage door, that faces internally. It should be free form any dust, grease, dirt and debris. First you should use a brush to clean away any loose dirt then go in with a damp cloth and clean until there's no dirt left. Let the door fully dry before moving onto the next step. Do not skip this step it's critical for the door to be clean and dry for the multifoil to hold.

  2. Measue the Garage Door

    Accurately measure the height and width of the garage door and take a note of the dimensions. This will ensure you cut the multifoil to the correct measurements.

  3. Roll out the Insulation and cut

    Roll out the insulation and using the Multifoil Insulation Scissors cut the insulation to the width of the garage door.

  4. Apply the Double Sided Tape

    At regular intervals apply the Double Sided Tape to the door edge or bracing. Press down firmly to each section for a couple of seconds to ensure it's bonded correctly to the garage door.

  5. Remove the backing from the Double Sided Tape

    Start at the bottom right and peel the backing from the Double Sided Tape. Attach the insulation tort to the Double Sided Tape and apply pressure for a couple of seconds. Keep doing this until the Multifoil Insulation is firmly in place.

  6. Repeat

    Follow step 3 to step 5 again to cover the back of the Garage door. Ensure each edge of insulation overlaps slightly to get the best outcome.

  7. Tape and Seal all the joints

    To finish use the ThermaSeal Foil Joining Tape to join each strip of insulation. We also advise using the ThermaSeal Foil Joining Tape around the edges of the insulation. At the top of the Garage door tape along the insulation and wrap the tape over the top edge of the garage door. This will give it more support and create an effecive seal.

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Any questions at all, just get in touch. You can either submit an enquiry or you can request a call me back. We are more than happy to assist you.

Disclaimer – Multifoil Insulation cannot be held responsible for any losses financially or physically from advice provided in this How-To-Guide.

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