Home / How to Insulate a Garage Door

How to Insulate a Garage Door

If you are planning on spending more time in your garage, then you should probably ensure the room is well insulated, not draughty and comfortable to be in. That all starts with insulating your garage door. We have put this blog together to answer some of your most commonly asked questions about how to insulate a garage door.

If you would like to skip straight through to our step-by-step install guide you can click on the link opposite.

Below are some hints, tricks, tips and some of your most FAQ. If you can find an answer to your question please get in touch.

Want to get hands on with our products?

Request a FREE sample Request a free sample

Common Garage Door Insulation Questions

Some of the most common questions we get asked concerning insulating a garage door are;

  • How do I insulate a garage door?
  • Should I insulate my garage door?
  • Is it difficult to insulate a garage door?
  • What’s the best type of insulation to use for a garage door?

Should I Insulate My Garage Door?

Installing garage door insulation will not only help you to keep warm when you use your garage, it will also increase savings on heating bills for your entire property.

Installing garage door insulation will not only help you to keep warm when you use your garage, it will also increase savings on heating bills for your entire property. Uninsulated garage doors increase your heating bills as they allow space for cold draughts to enter your home, which constantly draw heat from your property.

Benefits of Insulating a Garage Door

Insulated garage doors have the advantage over uninsulated garage doors in that they:

  • Boost thermal efficiency

  • Reduce energy bills

  • Reduce carbon emissions

  • Stop garage door draughts

  • Reduce street noise entering the house

Types of Garage Door Insulation

There are a few different types of garage door insulation, the most common types being:

  • Polystyrene foam
  • Panel insulation
  • Reflective foil insulation

While it is probably possible to insulate a garage door using fibrous insulation, it is not very practical and very seldom done.

    Lightweight Garage Door Insulation

    Choosing insulation that is lightweight and thin is extremely important when you decide to install insulation on a garage door.

    If the insulation is too bulky or heavy it will cause problems for the lifting mechanisms and the door runners. Lightweight materials should weigh less than 200g per m2 to ensure they don’t damage the running gear of the door.

    What is the Best Type of Insulation for a Garage Door?

    Reflective foil insulation is probably one of the best materials to insulate a garage door. Along with being lightweight, they are usually:

    • Quick and easy to install
    • Effective at reducing draughts
    • Easy to clean
    • Sound deadening

    Do not be fooled by Mylar products (left). Metallic plastic may look ‘shiny’ and be good at reflecting light but they do not reflect heat in the same way as aluminium. That is why they are so cheap, the ‘foil’ surfaces break down, they delaminate and tend to have poor fire ratings.

    Insulate a Garage Door for all Climates

    Uninsulated garage doors are vulnerable to temperature issues all year round. Throughout the Winter, homeowners battle with heat loss and during the Summer, homeowners struggle with keeping the heat out.

    To counter this problem and keep heat in and out, a solution would be to use reflective foil. This insulation is perfect for both Summer and Winter as it has the ability to resist all three types of heat transfer

    • Conduction
    • Convection
    • Radiation

    Is Insulating a Garage Door Difficult?

    This depends on the type of garage door and the type of insulation you use. A common material used to insulate garage doors is rigid foam but these insulations are inflexible, can be difficult to cut, require safety equipment and tend to produce a lot of waste. A flexible and easily shaped material is the simplest to install and good installation ensures a lasting product.

    What is the Best Way to Insulate a Garage Door?

    While some garage doors are manufactured pre-insulated, the majority of garage doors are left un-insulated. Insulating these after they have been fitted can be messy and very expensive. The simplest and most cost-effective method for insulating a garage door is DIY Garage Door Insulation Kit.

    Want to get hands on with our products?

    Request a FREE sample Find out more

    Don’t just take our word for it.

    See what our customers think about our Foil insulation and the reasons why you should be using it.

    “What can I say? The insulate was quick clean and easy to install. Our original loft conversion was done over 20 years ago, and it has gone from being the hottest room in the summer, and the coldest room in the winter, to being our master bedroom and the most comfortable room in the house."

    Wendy R

    Stockport, UK

    We use both the vapour and the breathable versions of Low-E Insulation. We’ve tried using other foil insulation products, but they can be time-consuming and difficult to install. Low-E is so easy to work with, we just wouldn’t use anything else.

    G Stone

    Stroud, UK

    “I’ve been specifying the use of Low-E Insulation for the last 5 years. It’s a fantastic product. It achieves better values in smaller spaces than other materials. Best of all, Building Control love it and so do our contractors.”

    A Brown

    Portsmouth, UK

    “We’re part of the Insta Group and have been installing loft insulation in Manchester for over 10 years. I’ve never come across a product as good as Low-E. It quick clean and easy to use. Our customers are delighted with it. I’ve been so impressed with it that I’ve re-insulated my own loft.”

    K Rabin

    Manchester, UK

    “The installation was quick clean and efficient. The results are amazing. Our conservatory is comfortable even in these record-breaking summer temperatures.”

    Mrs Staff

    Southampton, UK

    “Low-E was a critical part of our insulation build up. Without it, we would not have been able to meet our brief. The contractor was very happy with it because it was quick, clean and easy to install”

    Ms J Long