Newly installed flat roof on a building with scaffolding

Flat Roofing in Southampton

Flat roofs on extensions, garages and dormers take a lot of weather for their size. We install and replace modern flat roofing systems that stay watertight for years, not months.

  • Extension, garage and dormer flat roofs
  • Modern felt, EPDM and GRP systems
  • Proper falls so water always drains away
  • New edge trims, outlets and flashing
Roofing

Flat Roofing done properly

Why flat roofs fail

Most flat roofs leak because of poor falls, tired felt, or badly detailed edges and upstands where they meet a wall. We address the whole roof, not just the surface, so the new roof actually performs.

The right system for the job

Depending on the roof and your budget we fit high-performance felt, rubber EPDM or fibreglass GRP. We will talk you through the options and recommend what gives you the best life for your money.

What's included

  • Extension, garage and dormer flat roofs
  • Modern felt, EPDM and GRP systems
  • Proper falls so water always drains away
  • New edge trims, outlets and flashing
Newly installed flat roof on a building with scaffolding
Our process

How it works

A clear, straightforward process from first call to finished job.

  1. 1

    Survey

    We check the deck, falls and existing detailing.

  2. 2

    Quote

    A clear price and the system we recommend for your roof.

  3. 3

    Installation

    We strip back as needed and fit a fully bonded, watertight roof.

  4. 4

    Guarantee

    Backed by our 5-year workmanship guarantee.

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Reviews

Flat Roofing reviews

What our customers say about our work across Southampton and the south coast.

Rated 5.0
(29+ reviews)
“The team was incredibly straightforward, reliable, and respectful of our property. They did a top-quality job replacing the damaged soffits, gave us a very reasonable quote, and made sure everything was cleaned up properly before leaving. Couldn’t recommend them more!”
AAdhanari EDWARDPosted on Google
“Fantastic service found them on checkatrade. Came and looked at our roof, the drone went up looked all around and then they showed me what was wrong and what needed doing. Excellent service.”
Rrebecca walkerPosted on Google
“We contacted Southcoast to repair leaks in our extension roof. During their inspection they uncovered issues with the main roof, explained everything clearly with photos and videos, and we decided to go ahead with a full new roof. Communication was excellent throughout and they genuinely went above and beyond. We have also completed repointing work with them and again the work is top notch.”
MMike HillPosted on Google
FAQs

Frequently asked questions

Get in touch

Request Your Free Quote

Tell us what you need and we'll get back to you quickly with a free, no-obligation quote. Prefer to talk? Give us a call, we're a local team and always happy to help.

Call us

023 8168 1021

Email us

Visit

69 Warren Avenue, Southampton, SO16 6AF

Opening hours

Mon–Fri: 9am–5pm

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Get a free quote for flat roofing

Local team, fast turnaround and a 5-year guarantee on every job. Tell us what you need and we'll do the rest.

Free estimates · Drone surveys · 5-year guarantee