J P Building ServicesRoofing & Building Specialists
A newly laid flat roof on a house extension

Flat Roofing

Flat roofs need the right system, sound detailing and carefully formed falls to perform reliably. We install and repair durable flat roofing, including EPDM rubber roofing, for homes and commercial properties, helping water drain correctly instead of collecting on the surface.

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A newly laid flat roof on a house extension

Roofing

Flat Roofs

We install and repair flat roofs for residential and commercial buildings, including EPDM rubber roofing, with effective detailing and correctly formed falls designed for dependable protection in British weather.

  • New flat roofs for extensions, garages, dormers and porches
  • EPDM rubber roofing membranes for new and replacement flat roofs
  • Warm-deck and cold-deck constructions with suitable insulation
  • Falls formed to direct rainwater towards the drainage points
  • Installation of trims, upstands and outlets
  • Repairs to split, blistered or deteriorated felt

What affects the price: Costs vary according to the roof size, selected covering, access requirements and whether the existing deck or insulation must be replaced. Your written quotation will define the full roof build-up, preparation and fixed price.

Reviews

Read our reviews before booking flat roofs

Rated across Checkatrade, TrustATrader, MyBuilder and Google by homeowners, landlords and managing agents across London and the Home Counties.

Why choose us

Why we are trusted by our customers

Fixed-price written quotes that name the materials, method and timescale, so there are no surprises on the invoice.

Public liability insurance on every job, for your protection and ours.

A time-served, in-house team, so the people who quote the work are the people who do it.

Trading since 2006 with strong ratings on Checkatrade, TrustATrader and MyBuilder.

Clear communication from first call to final invoice, so you always know what is happening and when.

We turn up when we say we will and keep the site tidy, treating your home with respect.

Get a free, no-obligation quote

Tell us about the job and we will come out, take a look and give you a fixed-price written quote. No pressure, no hard sell.

How we work

Simple, from first call to sign-off

  1. 1

    Get in touch

    Call or send a few details about your flat roofs project.

  2. 2

    Free site visit

    We come out, assess the flat roofs in person and talk through your options.

  3. 3

    Fixed written quote

    You get a fixed-price quote for the flat roofs, naming materials, method and timescale.

  4. 4

    Work, then sign-off

    We carry out the flat roofs to schedule, keep the site tidy, then walk the finished job with you.

Our work

Recent flat roofs projects

A look at the standard of work our in-house team delivers across London and the Home Counties.

FAQs

Flat Roofs questions

What flat roof systems do you fit?

We fit EPDM rubber roofing along with other modern flat roof systems, choosing what suits the building and the budget, and we name the system in your written quote.

Is EPDM rubber roofing right for my flat roof?

For most extensions, garages and dormers it is a good fit. EPDM is a flexible rubber membrane that copes well with heat and frost. We check the deck and the falls first, and recommend it where it suits the roof.

Can you repair my existing flat roof?

Often, yes. If the failure is localised we can repair splits and blisters; if the covering has failed across the roof we will quote to renew it and explain why.

Why does my flat roof hold water?

Usually because the falls are too shallow or have settled over time. When we recover a roof we build in proper falls so water drains to the outlets.

Do you cover commercial flat roofs?

Yes, we work on both domestic and commercial flat roofs.
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