flat roof builders in London (128)

Looking for flat roofing specialists in London? Whether it’s a minor repair or a full flat roof replacement, we’ll help you find the right tradesperson for the job. All our members are checked and reviewed by people in your area, so you can hire with more confidence.

Flat roofers in London

Flat roofs are a smart, space-saving option for homes and outbuildings alike. But when they leak, sag, or show signs of age, it’s time to take action. From fixing felt roofs to fitting a new warm roof system, our tradespeople can handle it. And with our quote request feature, it only takes a minute to get started.

What to expect from hiring a flat roofer in London

Most homeowners search for flat roofers in London for jobs like:

• Fixing flat roof leaks in heavy rain
• Flat roof repairs for felt, EPDM or GRP systems
• Replacing old roofs with warm roof construction
• Installing flat roof skylights or lanterns
• Re-felting a flat roof or switching to a rubber membrane

Flat roofing costs in London

The cost of a flat roof varies depending on materials, access, and the size of the job. Here’s a rough guide.

Flat roofing installation:

£2013 on average, with prices typically starting at £1414 up to £2893.

Flat roofing repair:

£1000 on average, with prices typically starting at £592 up to £1705.

Flat roofing insulation:

£2052 on average, with prices typically starting at £1400 up to £3022.

Felt roofing installation:

£1453 on average, with prices typically starting at £972 up to £2182.

Rubber roofing installation:

£2181 on average, with prices typically starting at £1595 up to £3027.

Fibreglass roofing installation:

£2924 on average, with prices typically starting at £1903 up to £4521.

Need a clearer figure? Use our flat roof replacement cost calculator to estimate the cost for your home.

What’s included in the quote?

Most quotes will include:

• Removal and disposal of the old roof
• Labour and materials (e.g. rubber, felt or fibreglass)
• Optional extras like skylight installation, fascias or insulation
• Scaffolding (if needed)

How long will it take?

Flat roof replacements typically take 1 to 3 days, depending on the size and complexity.

Flat roofing in London: Homeowners vs renters

If you own your home, flat roof issues (including repairs and upgrades) are your responsibility. You might need building control approval if you're replacing more than 25% of your roof or adding insulation to meet warm flat roof construction standards.

If you’re renting, contact your landlord or letting agent as soon as you spot a leak or damage. It’s their responsibility to fix roof problems promptly. Make a record of any correspondence in case issues aren’t resolved quickly.

Emergency flat roofers in London

Heavy rain and flat roofs don’t always mix. If you’ve got water pooling or a sudden leak, it might be time to call an emergency roofer.

Our emergency flat roof services in London are available to tackle urgent jobs quickly.

Get urgent help with:

• Storm damage repairs
• Patch fixes for roof punctures
• Emergency re-felting
• Roof sealing to prevent water ingress

Find a flat roofer for the job you need in London

Here are just a few of the common tasks flat roofing companies in London can help with:

• Flat roof repair and replacement
• Warm roof installation
• GRP fibreglass roof installation
• EPDM rubber flat roof fitting
• Roof lantern fitting
• Shed or garage roof felting
• Roof insulation upgrades
• Flat to pitched roof conversion

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