Flat Roofs across Lancashire & Greater Manchester
Felt, rubber and fibreglass flat roofs for extensions, dormers, garages and porches.
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Flat Roofs
Flat Roofs from Oakcrest Roofing
A flat roof is never truly flat. It needs a gentle fall so rainwater runs to a gutter or outlet, and many problems come from decks that sag and let water pond. On extensions, dormers, garages and porches the membrane is only as good as the boards underneath, so every flat roof we fit starts with a check of the deck, the joists and any insulation.
There are three main systems. Torch-on felt is built up in bonded layers and is an economical, familiar choice. EPDM rubber is laid as a single sheet on most domestic roofs, leaving very few joints to fail. GRP fibreglass is laid wet and cures into a hard, joint-free surface that copes well with foot traffic. Each has strengths, and each is explained on its own page.
We recommend the system that fits your roof's size, use and budget, and explain the reasoning. If an existing roof can be overlaid rather than stripped, we say so, and if it cannot, we show you photos of what we found. You get a written price for the system you pick, and the old roof is cleared away when we finish.
Written price first
Itemised, before any work
Explore
Types of flat roofs we carry out
What's included
What our flat roofs service covers
The work that goes into the job, set out in your written quote.
- Deck and joist inspection before any membrane is chosen
- Falls corrected with firrings so water drains instead of ponding
- Choice of torch-on felt, EPDM rubber or GRP fibreglass
- Insulation upgrades where building regulations or comfort call for them
- Upstands, trims and outlets detailed to stop water getting in at the edges
- Removal of the old covering and all waste
Get a free, no-obligation roofing quote
We come out, take a proper look and send you an itemised written price.
The process
How we carry out flat roofs
From the first look at the roof to the final clear-up, this is how the job runs.
- 1
Step 1 of 4
Inspect the deck
We check the boards, joists and drainage, look for ponding, and decide whether the roof can be overlaid or needs stripping.
- 2
Step 2 of 4
Choose the system
We compare felt, rubber and fibreglass for your roof and give you a written price for the option you prefer.
- 3
Step 3 of 4
Rebuild the base
The old covering is removed, rotten boards replaced, falls corrected and insulation fitted where required.
- 4
Step 4 of 4
Lay and trim
The chosen membrane is installed to the manufacturer's method, with edge trims, upstands and outlets finished and checked for drainage.
Why choose us
Why homeowners choose Oakcrest for flat roofs
A written price first
You get an itemised quote before any work starts, so you know what you are paying for and nothing changes once the scaffold is up.
Photos of what we find
We photograph the parts of the roof you cannot see from the ground, so you can judge the problem for yourself rather than take our word for it.
Repair or replace, honestly
If a repair will see the roof through, that is what we quote. When a roof is at the end of its life we tell you, so you can plan instead of paying twice.
Tidy sites, waste removed
Your garden, drive and windows are protected while we work, and every old tile, batten and offcut leaves with us at the end of the job.
Pricing
What affects the cost of flat roofs
Flat roof prices vary with:
- The system chosen: felt, EPDM rubber or GRP
- Roof area and the number of upstands, rooflights and outlets
- Deck condition and how much board needs replacing
- Whether insulation is being added to meet building regulations
No hidden extras
Scaffold and waste in the price
About us
Repairs and replacements, carried out with care
Oakcrest Roofing Ltd looks after pitched and flat roofs across Lancashire and Greater Manchester, from terraces with original slate to extensions and garages with tired flat roofs.
- Written, itemised quotes
- Photos of what we find
- Tidy sites, waste removed
Our work
Recent roofing work
Where we work
Flat Roofs near you
We carry out flat roofs across Lancashire and Greater Manchester. Choose your town:
Aerial inspections
Drone roof surveys
Our drone roof survey and aerial inspection service provides an instant, efficient and safe way to assess the condition of your roof. Using HD drones, we capture detailed images and videos of hard-to-reach areas, identifying potential issues like leaks, cracks, and structural damage.
This non-invasive method reduces risks and disruption and results in accurate data without the need for roof ladders or expensive scaffolding. Ideal for residential, commercial or industrial properties, this service ensures thorough, cost-effective inspections every time.
We advise that you get your roof professionally surveyed every 2-3 years to keep up with any potential damage and early signs of wear and tear. If we catch minor repairs early, they will not become a more serious problem in the future.
FAQs
Common questions about flat roofs
Which flat roof system lasts longest?
Why does water sit on my flat roof?
Can a new flat roof go over the old one?
Can I walk on a flat roof?
Still have a question?
Can't find the answer you're looking for? Get in touch and we'll happily talk it through, with no obligation.
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