Garage floors
A cracked or uneven garage floor is usually screeded over: the old slab is cleaned and primed, a damp-proof membrane goes down if there's none, and about 65 mm of sand and cement screed is laid. A single garage takes about 1.17 m³. It's priced per m² by a screeder after seeing the slab.
Screeded level over the old slab, then tiles, epoxy or floor paint once it's dry.
Free and no obligation. Your plan goes to one builder, not a list.
- 65 mmof screed, usually
- 1.17 m³for a single garage
- Weeksto dry before tiles or epoxy
- 1damp-proof membrane if none
How it's done
| Garage | Floor | Screed at 65 mm | Weight |
|---|---|---|---|
| A single garage | about 18 m² | 1.17 m³ | 2.5 to 2.6 t |
| A long single garage | about 24 m² | 1.56 m³ | 3.3 to 3.4 t |
| A double garage | about 36 m² | 2.34 m³ | 4.9 to 5.1 t |
The finish on top
- Floor paint: the lowest-cost finish, recoated every few years.
- Epoxy: hard-wearing and easy to clean, on a dry, sound screed only.
- Tiles: for a garage used as a workshop or gym.
- Nothing: a power-floated screed is fine as it is for parking.
A sand and cement screed takes weeks to dry: about a day per mm for the first 40 mm, and slower after that. Epoxy or tiles on a damp screed fail.
Plan your garage renovation
A few quick taps: what your garage needs, what the roof and door cost, and the order to do it in. Contact details come last, and only if you want a price.
Your garage, the floor: priced on a visit.
How the estimate is worked out
Roof and door ranges are what Irish roofers and door companies publish for the same job: the lowest to the highest figure. A double garage roof is its area times the rate for the covering. Floors, walls, windows, insulation and electrics vary too much from garage to garage to price fairly without seeing them, so the builder prices those on a visit.
The jobs on a garage
Each job has its own page: what it involves, what it costs where we can price it, and what to check. Insulation and electrics: insulation, electrics.
Garage doorsUp-and-over, roller, sectional or double: prices and what to pick.
Garage roof replacementStripped and re-covered in felt, rubber or fibreglass.
Garage walls and windowsBlockwork repairs, render, a skim inside, a window or a side door.
Garage door repairSprings, cables, motors and sensors: what's wrong and who fixes it.
Asbestos garage roofsOld fibre-cement sheets: what to check before anyone touches them.Questions before you start
How much screed does a garage floor need?
At 65 mm, about 1.17 m³ for a single garage and 2.34 m³ for a double.
Can I screed over my old garage floor?
Usually, if the slab is sound: cleaned, primed and with a damp-proof membrane if it has none.
How long before I can drive on a new garage screed?
Walk on it after a day or two; ask the screeder before driving on it. Finishes wait until it's dry, which takes weeks.
Every guide and county page
Jobs
Costs and guides
Get the garage sorted, in the right order
Pick the garage and the jobs to see what the roof and door cost and the order to do it all in. When you want a price, your plan goes to a single vetted builder for your area.