Flat Roofing in Ely - How to Choose the Right Contractor

Expert Flat Roofing
in Ely

What Flat Roofing Actually Involves

A flat roof is not truly flat. It sits at a shallow pitch, usually between 1 and 5 degrees, so that rainwater drains to one or more outlets rather than pooling. The membrane system laid over the deck is what does the waterproofing work, and the quality of that membrane, the way it is fixed, and how the edges and upstands are dressed all determine how long the roof performs.

On garages, extensions, and outbuildings, the most common systems are mineral felt (torch-on or cold-applied) and EPDM rubber. Each has different performance characteristics, expected lifespans, and installation requirements. A good contractor will explain which system suits your roof and why, rather than simply quoting for whatever they happen to carry in the van.

Why the Contractor Choice Matters More Than the Material

Even the best EPDM membrane will fail within a few years if the deck preparation is poor, the drainage falls are wrong, or the upstand detailing at walls and parapets is skimped. Flat roofing failures are almost always at the edges, the outlets, or the joints, and those are precisely the details that separate a competent installation from a cheap one.

A common problem is contractors applying a new felt layer over an existing wet or rotting deck. Moisture trapped under the new membrane cannot escape, and the deck continues to deteriorate underneath. Within a couple of seasons the new surface is lifting or blistering, and the homeowner faces the full cost of a proper strip-and-relay anyway.

Questions to Ask Before You Agree to Anything

Before you accept any quote for flat roofing work in Ely, go through the following with each contractor you speak to. Their answers will tell you a great deal about how they work.

• What membrane system are you proposing, and why is it right for this roof? If they cannot give a clear answer, be cautious.
• Will you strip back to the deck? On a re-roofing job, the deck must be inspected. Ask what happens if rot or damage is found once it is exposed, and how that will be priced.
• How will you form the upstands? At every wall, parapet, or kerb the membrane must be turned up by at least 150mm. Ask how this will be fixed and weathered.
• What fall are you designing to? Flat roofs require a minimum fall of 1:80 to drain properly. If the existing deck has no fall, ask whether new firring pieces will be fitted to create one.
• How will the outlets or gutters be integrated? Outlets and drip edges are high-risk points. A contractor who has a clear method here is worth more than one who waves the question away.
• What will you leave me in writing? You should receive a written scope of work before you pay anything. This protects you if there is any dispute about what was agreed.
• Who will actually do the work? Some contractors price the job and subcontract the labour. There is nothing inherently wrong with that, but you are entitled to know.

What a Written Quote Should Include

A proper quote for flat roofing is not a round number on a scrap of paper. It should set out the system being used, the area in square metres, whether the existing deck is included in the strip-out, how upstands and edges will be treated, and what drainage provision is made. If a quote omits any of these things, ask for them to be added before you sign.

Flat roof costs in this part of East Anglia vary considerably depending on the system chosen. A basic torch-on felt re-roof might come in at around £40-£60 per square metre, while EPDM on a properly prepared deck typically runs from £60-£90 per square metre. Those are rough current benchmarks, not fixed prices, and they will move depending on roof complexity, access, and the state of the deck underneath.

Red Flags to Watch For

A contractor who asks for a large cash deposit before starting, who cannot or will not provide a written breakdown, or who pressures you to decide on the same visit should make you pause. None of those behaviours are automatically disqualifying, but they are worth questioning directly before you commit.

Be wary of any quote that is dramatically lower than others without a clear explanation. Sometimes a low price reflects a simpler specification: fewer layers, no deck replacement, cheaper materials. Ask the contractor to match the specification you have been given by others so you are comparing like with like.

EPDM Versus Felt - a Brief Guide

Torch-on mineral felt has been the standard flat roofing material in the UK for decades. A properly laid three-layer system is a solid, proven solution. Single-layer felt, sometimes still offered on budget jobs, is not adequate for a long-lasting installation.

EPDM rubber is a single-layer membrane that is bonded or mechanically fixed to the deck. It is flexible, tolerates movement well, and does not crack in cold weather the way that some older felt systems do. It is also seamless across large areas, which removes one category of failure risk. Expect a well-installed EPDM roof to last considerably longer than a basic felt system before it needs attention.

Flat Roofing We Cover from Mildenhall

We work on flat roofs across the area, including Ely and nearby places such as Soham, Littleport, and further afield in Cambridgeshire and Suffolk. We carry out new installations, full re-roofs, and targeted repairs on garages, extensions, and outbuildings. If you are not sure whether your roof needs a repair or a full replacement, a proper inspection will give you a clear answer before any money changes hands.

To arrange a roof survey in Ely, call Mildenhall Roofers and we will come and take a look. We will tell you honestly what the roof needs, explain your options, and give you a written quote that covers the work properly.