Flat Roofing in Fakenham

How we handle flat roofing

Flat Roofing in Fakenham

Flat roofs are found on extensions, outbuildings, garages and some older bungalows. When they are installed correctly and with the right materials, they perform well for many years. When they are not, you get ponding water, split membranes and damp working its way into the structure below. If your flat roof is leaking, blistering or simply at the end of its life, this page explains what your options are and what a proper job involves.

Flat Roof Systems: Felt and EPDM Rubber

The two systems most suited to domestic flat roofs are traditional built-up felt and EPDM rubber membrane. Each has its place, and the right choice depends on the roof size, falls, budget and how much access you need to the roof afterwards.

Traditional felt roofing uses multiple layers of bitumen-based felt bonded together with a torch or cold adhesive. Three-layer torch-on felt is the standard for a durable result. Single-layer mineral felt, which was commonly fitted on extensions and garages in the 1970s and 1980s, tends to fail within ten to fifteen years. A common problem is pooling water caused by inadequate fall - a flat roof is never truly flat and should drain at a minimum of 1 in 80 (around 0.7 degrees). If the falls are wrong, no membrane will last as long as it should.

EPDM rubber membrane is a single-ply system bonded directly to the deck. It handles expansion and contraction better than felt, which makes it a good choice for exposed situations. Manufacturer life expectancy for EPDM membranes is typically stated at 50 years, though real-world performance depends on correct installation and the condition of the roof deck beneath. EPDM is also fully walkable once installed correctly, which matters if the roof gives access to a terrace or plant equipment.

What the Work Actually Involves

A flat roof replacement is not simply peeling off the old covering and rolling on a new one. Before any membrane goes down, the existing roof deck needs to be checked. Common problems found during strip-off include rotted or delaminated OSB or plywood, inadequate insulation and blocked or incorrectly placed outlets. Any decking that has taken up moisture must be replaced rather than overboarded, because trapping damp beneath a new membrane causes it to blister and fail early.

• Strip off the existing covering and dispose of waste responsibly
• Inspect and replace any damaged or wet roof decking
• Check and correct falls to outlets and drains
• Fit insulation to meet current building requirements where a full replacement is being done
• Install the chosen membrane system - felt or EPDM - with correct upstands at abutments and parapet walls
• Finish lead or aluminium flashings where the roof meets walls, chimneys or brickwork

Upstands and flashings are where most flat roof leaks begin. The membrane needs to turn up at least 150mm against any adjoining wall, and that upstand must be capped by a flashing that is either dressed into the mortar joint or fixed mechanically. A roof that looks fine from the outside can leak at a wall junction that has not been dressed properly.

Flat Roof Repairs vs Full Replacement

Not every flat roof problem calls for a full replacement. A localised split, a failed flashing or a small area of blistering can often be repaired at a fraction of the cost. The decision comes down to the age and overall condition of the membrane. If the covering is more than 20 years old and showing widespread cracking or crazing, patching buys time rather than solving the problem. On a younger roof, or where damage is genuinely isolated, a repair is the sensible first step.

A flat roof inspection will tell you which situation you are in. We check the membrane condition, the falls, the outlets and all the junctions before recommending anything. If a repair will last, we say so.

Typical Costs for Flat Roofing in Fakenham

Flat roof replacement in Norfolk typically costs between £70 and £120 per square metre for a felt system, and £100 to £150 per square metre for EPDM rubber, depending on the condition of the existing deck and the complexity of the junctions. A straightforward single-garage flat roof might cost £800 to £1,500 in total. A larger extension roof of 30 to 40 square metres will generally sit in the £2,500 to £5,000 range. These are honest guide figures - the actual price depends on access, the amount of decking that needs replacing, and how involved the flashing work is.

Repairs are priced separately. A localised split or failed flashing repair might cost £150 to £400 depending on the access needed and the area involved.

Why Use a Local Roofer for Flat Roofing Work

Flat roofing failures are usually the result of poor installation rather than poor materials. The membrane itself is rarely to blame. Corners are cut at upstands, falls are not checked, decking is overboarded rather than replaced. None of these shortcuts are visible until water finds the weakness, often a year or two after the work was done.

If you have a flat roof that is leaking, showing signs of blistering, or simply coming to the end of its life, call us to arrange a roof inspection and we will tell you honestly what it needs.

Flat Roofing for Fakenham Properties: What to Expect

Before any work starts, we will give you a written quote showing what is included so there are no surprises when the job is done.

A correctly installed flat roof on a domestic extension or garage in Fakenham, using a three-layer torch-on felt or EPDM rubber system, can be expected to last 20 to 50 years depending on the system chosen and the quality of the installation.