Garage roof replacement

Stripping and re-covering a single garage's flat roof costs €1,800 to €3,500. On a bigger roof it's priced per m²: felt €55 to €90, EPDM rubber €70 to €110 and fibreglass €75 to €120 per m², so a double garage roof of about 36 m² comes to €2,000 to €3,250 in felt.

Stripped and re-covered in felt, rubber or fibreglass, and what to check before the old roof comes off.

Free and no obligation. Your plan goes to one builder, not a list.

  • €1,800–€3,500single garage roof
  • €55–€90per m², felt
  • €70–€110per m², EPDM
  • Pre-2000sheets: test for asbestos
Drawing: a garage flat roof re-covered, with a new membrane over boards on a timber deck

What a re-roof involves

Drawing: a garage flat roof re-covered, with a new membrane over boards on a timber deck
  1. Strip the old covering down to the deck, or remove old sheeting, tested first if it's fibre-cement.
  2. Replace rotten deck boards, and joists if they've gone soft.
  3. Fit the new covering with trims, upstands at the walls and a drip into the gutter.
  4. Insulate now if the garage will ever be heated: boards go on the deck under the new covering, when it costs least.

Felt, EPDM or fibreglass

CoveringPer m²Good for
Torch-on felt€55 to €90The usual covering, and the lowest cost
EPDM rubber€70 to €110One sheet, no joins, long life
Fibreglass (GRP)€75 to €120Hard-wearing, can be walked on

Old corrugated or flat sheets: asbestos garage roofs.

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 roof: €1,800 to €3,500.

Step 1 of 7

What size is the garage?

Measure it roughly from outside: the roof and floor are priced by size.

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.

Questions before you start

How much is a new garage roof?

Stripping and re-covering a single garage's flat roof costs €1,800 to €3,500. On a bigger roof it's priced per m²: felt €55 to €90, EPDM rubber €70 to €110 and fibreglass €75 to €120 per m², so a double garage roof of about 36 m² comes to €2,000 to €3,250 in felt.

Felt or EPDM on a garage?

Felt costs less. EPDM is one sheet with no joins and usually lasts longer. Both suit a garage.

Can the new roof go over the old one?

Sometimes over sound felt, but stripping it lets the roofer see and replace rotten deck boards. Never over sheeting that may be asbestos.

Is my garage roof asbestos?

Corrugated or flat fibre-cement sheets on a garage built before 2000 may contain asbestos: Ireland banned asbestos products from 1 April 2000. Left alone and in good condition they're low risk. Don't cut, drill, sand or power-wash them: have a sample tested, and have them removed by a specialist contractor.

Every guide and county page

Drawing: one garage with the usual jobs marked: roof, door, window, walls and electrics

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.