Everything you need to know about garage insulation
The garage is an access route to your home where temperature exchanges between the outside and inside air are frequent. In winter, it can be very cold there. Conversely, in summer, temperatures can soar there… What are the advantages of insulating a garage? How to do it ? Are there state aids? We take stock in this article.
4 good reasons to insulate your garage
Properly insulating this room of your home can have many benefits that will affect your entire home.
1. Save money
Insulating your garage helps you reduce your heating bills! Yes, garage insulation prevents outside air from entering your home. Indeed, there is often a common wall and/or ceiling-floor between the garage and one of the rooms in your house. As soon as the cold arrives, it will infiltrate through the common wall and generate overconsumption of energy in the heated room. The same is true when it is very hot outside in the summer. Insulating your garage therefore allows you to avoid major energy losses that could impact your bills.
2. Improve thermal comfort
In winter, going to a poorly insulated and unheated garage can quickly become a challenge! In addition, as soon as you open your garage door, the cold rushes into your home. If you need to go there several times a day, it is certain that properly insulating this room will bring you more comfort on a daily basis. The insulation of your garage will save a few degrees in the room, but also in the whole house.
3. Cut the house from noise
By choosing to insulate your garage, you not only gain in thermal comfort, but also in acoustic comfort! Proper insulation of your garage can cut out noise coming from the street, such as the comings and goings of cars.
4. Assign other functions to your garage
Very often, the garage is not only used to park one or more cars. You can use it to store foodstuffs, as a laundry area or even as a DIY workshop. This is why insulating your garage allows you to fully use this room of your house and give it a completely different function if you wish, without having to endure the outside temperatures.
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Garage insulation methods
To insulate your garage, several actions can be implemented. Here are which ones.
Insulate the garage door
The main garage door is often a source of drafts. To slightly limit heat loss in winter or protect yourself from the heat in summer, you can:
Insulate garage walls
According to the Ademe (Environment and Energy Management Agency), the walls of a garage allow heat to pass through and constitute 20 to 25% of the energy losses of a house built before 1974. insulating the walls is therefore one of the first things to do!
To insulate the walls of your garage from the outside, you can:
External thermal insulation (ITE) is very effective and does not encroach on the living space of your home. However, it is more expensive. Count between €180 and €450 per m².
Good to knowIn some areas, it is forbidden to modify the facades of buildings. Remember to check with your town hall before undertaking any work.
To insulate the walls of your garage from the inside, you can put insulation on the wall either by screwing it to a metal or wooden frame, or by gluing it directly to the wall of the garage. Internal thermal insulation (ITI) is the easiest and most accessible insulation technique! Count between 30 and 80 € per m².
Insulate the garage ceiling
For garages in the basement, remember to insulate the ceiling using insulating panels! According to Ademe, low floors represent 7 to 10% of heat loss.
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Focus on premium energy
For carrying out your insulation work, an energy bonus has been set up by the State to encourage French households to carry out energy renovation work in their homes. The Government's objective is to reduce the overall energy expenditure of households in France.
To benefit from it, you must contact your energy supplier who will support you financially in carrying out your work. Regardless of your supplier, you can make a request on the lenergietoutcompris.fr website. Depending on certain criteria, you can calculate the amount of the energy bonus to which you are entitled. This aid will be paid to you once the work is completed.
Please note, to claim the energy bonus, your renovation work must be carried out by a professional with the RGE label (Recognized guarantor of the environment).
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your energy bonus
I fake my bonusGood news: this financial aid can be combined with other aid, such as MaPrimeRénov', eco-PTZ and reduced-rate VAT. Think about it!