How much does it cost to insulate a garage?
In this post, we look at the average cost to insulate a garage to improve the overall temperature of the space.
If you’re looking to convert your garage into a habitable space you will need to adhere to building regulations for insulation. Find out more about this in our garage conversion cost guide.
How much does it cost to insulate a garage in the UK?
The table below provides a guide to the cost of insulating a garage, including the walls, floor, ceiling, and doors. We’ve also outlined the average labour costs you can expect to pay for insulating a garage. This is typically in the region of £30-£45 per m2.
| Cost of provided item | Unit | Average cost (excl. VAT) |
|---|---|---|
| Garage wall insulation (supply and fit insulated plasterboard) | per m2 | £50 |
| Garage wall insulation (supply and fit new stud wall with cavity in between) | per m2 | £55 |
| Garage roof insulation (supply and fit rigid foam insulation) | per m2 | £40 |
| Garage roof insulation (supply and fit rigid foam insulation AND plasterboard finish) | per m2 | £50 |
| Garage floor insulation (supply and fit rigid foam insulation on top of existing concrete base) | per m2 | £40 |
| Garage door insulation (supply only draught seals and adhesive foil to inside of door) | £100-£200 | |
| Average cost to insulate single garage (85m2) | £3,000-£4,500 | |
| Average cost to insulate double garage (140m2) | £5,000-£7,500 | |
| Average cost of labour to insulate a garage | Per hour | £30-£45 |
| Average cost of labour to insulate a garage | Per day | £240-£360 |
Our costs are ballpark averages – get a local tradesperson to quote now
Unless you’re converting your garage into a habitable space, you can pick and choose the level of insulation you wish to install to suit your needs and budget. We’ve outlined the individual costs of the various insulation options, below.
What’s the average cost of insulating garage walls?
Insulating garage walls can help to reduce unwanted drafts and – in an attached garage – improve your home’s overall energy efficiency.
There are generally two preferred options for insulating the internal walls of a garage:
- Insulated plasterboard. To supply and fit, this will cost in the region of £50 per m2.
- New stud wall with a cavity in between the stud wall and the existing garage wall. This will cost around £55 per m2 to supply and fit.
These costs relate to insulating your garage walls internally only. Read our cost guide to find out about the cost of external wall insulation.
How much does it cost to insulate a garage roof?
Rigid foam insulation can be used to insulate a garage roof at a cost of around £40 per m2 for both supply and fit.
There’s also the option to have a plasterboard finish installed to cover the insulation. For this complete job, expect to pay around £50 per m2.
What’s the cost of insulated garage doors?
On average, the insulated garage doors (UK) cost is around £100-£200.
This factors in draught seals and adhesive foil material to be fitted to the inside of the garage door. Just bear in mind that this cost of an insulated garage door is for supply only, as it is usually completed as a DIY job.
What’s the average cost to insulate a garage floor?
Insulating the garage floor will transform a cold, concrete base into a much more comfortable environment, helping to reduce any moisture issues too.
To supply and lay rigid foam insulation on top of an existing concrete floor, you’ll be looking at around £40 per m2.
Overall, how much will it cost to insulate my garage?
On average, you can expect to pay between £3,000-£4,500 to insulate a single garage and between £5,000-£7,500 to insulate a double garage.
Labour costs will vary depending on your location. But as a guide, expect to pay around £30-£45 for a professional to insulate your garage.
Get garage insulation quotes from a professional
We always recommend getting at least three quotes for garage insulation to make sure you get the best deal. Be sure to compare quotes like-for-like to ensure all materials and labour costs are included.
Our request a quote feature helps to make light work of obtaining quotes from trustworthy professionals. Just tell us about the work you need doing and we’ll send the details to a number of local experts who are checked and approved members of our leading directory. They’ll then be in touch with you directly.
Working with professional estimators, we collate cost estimates for the common home improvement and repair jobs in the UK.
All the costs are estimates only. For accurate costs for your particular requirements, you are encouraged to reach out to professional tradespeople to receive a quote for your job.
Our estimators are Chartered Members (MRICS) of the Royal Institution of Chartered Surveyors and Members of the Chartered Institute of Building (MCIOB). See full disclaimer.
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