top of page

New flat roof fitting in Londonderry, built to drain

35 years of roofing experience. Choice of PVC, felt or fibreglass where suitable. Manufacturer guarantees on applicable systems.

A modern single-storey extension with a flat roof and large glass doors, situated in a residential garden.

What you gain from a properly planned flat roof

Choice that suits the structure

PVC, felt or GRP are compared on how they fit the roof, not on guesswork or habit.

Drainage dealt with early

Falls and outlets are planned before the covering goes down, where roof trouble often starts.

Edges finished with care

Upstands, trims and penetrations are detailed properly to keep weak points from forming.

A woman in work clothes and gloves inspects and smooths the surface of a roof.

A flat roof starts with the build-up below

A new flat roof is not just a fresh covering rolled out over old problems. The strength of the job comes from the deck, the falls, the insulation, the outlets and the detailing at every edge. We install new flat roof systems on extensions, garages, outbuildings and other suitable low-slope structures, making sure the roof is built to shed water rather than hold it. With Amac Roofing, you get a practical comparison between PVC, torch-on felt and fibreglass where those systems suit the structure, the finish you want and the way the roof will be used.

We match the system to the roof and use

Before work starts, we measure the area, look at the shape of the roof, check access and review the existing construction beneath it. Those points matter because a small garage roof, a larger extension and a roof with awkward penetrations do not all want the same answer. We prepare the substrate properly, form the drainage details, then install the chosen covering with care around trims, upstands and outlets. A call to Amac Roofing gives you clear options, so you can choose the route that makes sense for your property instead of being pushed toward one material by default.

A modern single-storey extension with a flat roof and large glass doors, situated in a residential garden.

Frequently asked questions

Which flat roof system is best for my property?

That depends on the roof size, shape, access, finish and how the area will be used. We look at the deck, drainage and details first, then explain whether felt, PVC or fibreglass suits the build best. You get a clear reason for the recommendation rather than a stock answer.

Can you install a new flat roof on a garage or extension?

Yes, provided the structure is suitable. Garages, extensions and other low-slope roofs are common places for a new flat roof system, but we still check the build-up below, the falls and the edges first. A neat finish means very little if the roof underneath has been ignored.

How do you stop standing water on a new flat roof?

The answer starts before the covering is fitted. We look at the deck, form proper falls where needed and make sure outlets and drainage details are doing their job. If water has nowhere sensible to go, even a good covering ends up working harder than it should.

Start planning the new flat roof

Call Amac Roofing to talk through roof size, access and the finish you want, and we will explain the most suitable route.

Contact us

Amac Roofing

2 Hayesbank Park,
Londonderry,
BT47 2AZ

Business hours

We have no opening hours.

Find Us on Yell
  • Instagram icon
  • Facebook icon

Terms of Use | Privacy & Cookie Policy | Trading Terms

© 2026. The content on this website is owned by us and our licensors. Do not copy any content (including images) without our consent.

bottom of page