Insulated garden rooms in Sheffield
A garden room is only useful if you can sit in it in January. Insulation in the floor, walls and roof, good glazing and a little heat turn a summer house into a room you use every day.
Every room priced on this site is fully insulated. Most cost between £12,000 and £40,000, from a small room to a large one.
A free matching service, not a builder. We find you a local garden room builder. How it works
What insulation changes
- You can use the room all year, not just from May to September.
- It needs only a small heater, so it is cheaper to run.
- Less condensation, so less damp, mould and damage to what you keep inside.
- Less noise in and out, which matters for offices, studios and gyms.
- It stays cooler on hot days as well as warmer on cold ones.
Sizes and typical prices
| Size | Typical price |
|---|---|
| Small 3 × 2.5 m, 7.5 m². One person working or reading. | £12,000 to £15,000 |
| Medium 4 × 3 m, 12 m². Office, studio or small gym. | £19,000 to £24,000 |
| Large 5 × 4 m, 20 m². Room for two uses or a family room. | £32,000 to £40,000 |
Typical ranges for a bespoke, fully insulated room at £1,600 to £2,000 per square metre, including electrics and double glazing.
What a good quote includes
Six things to ask every builder to put in writing, so you can compare quotes properly.
Insulation in all six sides
Floor, four walls and roof. Ask for the type and thickness of each; the floor is the side cheaper builds skip.
A breathable membrane and a vapour layer
These keep moisture out of the walls. Without them, insulation gets damp and stops working.
Double or triple glazing
Glass is where most heat is lost. Ask for the glazing specification of the doors and windows.
A ventilation gap behind the cladding
Air moving behind the outer boards keeps the frame dry and makes the cladding last.
A roof built to shed Sheffield rain
A rubber (EPDM) or similar membrane on a slight fall, with a gutter and somewhere for the water to go.
Heating matched to the room
A panel heater or an air conditioning unit sized for the room. The better the insulation, the smaller the heater.
Get a price for a room you can use all year.
Get a free quoteHow it gets built
Survey and fixed price
The builder checks the spot and explains the insulation they use, then gives a fixed price.
Base
Kept clear of the ground so air can move underneath and damp stays out.
Insulated shell
Insulation, membranes and glazing fitted as the frame goes up, before the cladding goes on.
Finish
Inside walls, flooring, electrics and heating, then a check that doors and windows seal.
Questions people ask
Are garden rooms warm in winter?
A fully insulated room with double glazing and a small heater stays comfortable through a Sheffield winter. An uninsulated summer house does not.
How do I stop condensation in a garden room?
Insulation, a vapour layer on the warm side, ventilation and a little background heat. Condensation is a sign one of those is missing.
How thick should garden room insulation be?
It depends on the material. Ask each builder for the type and thickness in the floor, walls and roof so you can compare quotes like for like.
What is the cheapest way to heat a garden room?
Good insulation first, then a heater sized for the room on a thermostat or timer. An air conditioning unit can be efficient for heating as well as cooling.
Is an insulated garden room the same as a log cabin?
Not usually. Many log cabins have single-skin walls with no insulation. An insulated garden room is built in layers with insulation inside the walls.
Get a free quote for your insulated garden room
Three short steps, about two minutes. The more you tell us, the more useful the builder's first call will be.
We're a free matching service, not a builder. We find a local garden room builder and tell you who they are before anyone contacts you.
Thank you. We've got your enquiry.
- We'll find a garden room builder who covers your area and tell you who they are, usually within one working day.
- We only pass on your details if you tell us you're happy for us to.
- They then arrange a visit and give you a fixed price. We won't send you marketing.