Flat roofs in Doncaster

What it costs

• Flat roof repair: £809 on average, typically £471 to £1,400^[1]
• New flat roof: £1,711 on average, typically £1,198 to £2,489^[1]
• Felt: £1,163 on average, typically £732 to £1,824^[1]
• Rubber: £2,027 on average, typically £1,499 to £2,778^[1]
• Fibreglass: £2,275 on average, typically £1,497 to £3,507^[1]

These are Checkatrade's published averages for Doncaster.

Felt, rubber or fibreglass?

• Checkatrade says EPDM rubber, GRP fibreglass and traditional felt are all popular for flat roofs, and that EPDM and GRP tend to last longer and need less maintenance^[1].
• Checkatrade says felt is typically the cheapest flat roof material but has the shortest lifespan, at 10 to 15 years^[1].
• Checkatrade says a well-installed fibreglass flat roof can last 20 to 30 years with proper maintenance^[1].

Repair or replace?

Checkatrade's signs that a flat roof needs replacing are persistent leaks, sagging, visible cracks, bubbling or large areas of ponding water^[1]. Ask the roofer to tell you what has failed before they quote for a new roof.

What the quote should include

Checkatrade says most flat roof quotes include removing and disposing of the old roof, labour and materials, scaffolding if needed, and optional extras such as a skylight, fascias or insulation^[1].

How long it takes

Checkatrade says most flat roof installations take 1 to 3 days, and a small garage or porch roof might be done in a day^[1].

Building Regulations

For flat roofs, the Planning Portal says some repairs need no Building Regulations application, but if a roof with integral insulation is replaced you may be required to upgrade the insulation^[2]. Ask the roofer whether your job needs approval and who will arrange it.