Flat roofing in Bryanston

Back additions, dormer cheeks and porch roofs. Around Bryanston that can mean a narrow rear addition with a flat roof, a dormer with a flat top, or a small roof over the front door.

The covering on a Bryanston flat roof is usually torch on felt or an older three layer built up system finished in mineral surfaced cap sheet, sometimes with a second layer laid over the first to buy time. We strip a section to see the deck, because that is the whole question. Dry plywood or OSB takes a new covering. Chipboard decking that has been sitting wet has to come off and new boards go on the joists. After that it is EPDM rubber, GRP fibreglass or a fresh torch on system, with single ply worth pricing on anything wide and open.

Ponding, falls and the outlet. Water that stays put after the rain has stopped is not a cosmetic problem. Standing water works into every lap and seam and a frost prises them apart. Usually the fall was never there, the firrings were cut too shallow, or the rainwater outlet is silted up or has been built over by later work. We rebuild the falls with firrings or tapered insulation so it drains to an outlet, in line with BS 6229:2025 on flat roofs, and we make sure the gutter, hopper and downpipe underneath can take what arrives.

Where a flat roof actually leaks. Almost never in the field of the covering. It is the edge trim, the drip, the apron flashing, the kerb round an opening and the laps. On felt you see a blister, a bubble or a split. On single ply it is a lifted or failed seam. On fibreglass it is a crack where a sharp internal angle has flexed. Repairs begin by taking out whatever has failed. The upstand is rebuilt to a height that will actually hold water back, and every seam is welded or bonded instead of sealed.

Openings, abutments and the build up. A rooflight, a lantern, a Velux, a hatch or a soil and vent pipe needs its own kerb and collar. Against a wall the cover flashing is chased in and formed in lead. On a parapet the coping matters and so does the tray behind it, because a parapet with neither soaks the brickwork while everybody blames the roof. Older roofs in Bryanston are cold roofs, with insulation between the joists and a dead void above where condensation gathers and interstitial damp rots the deck unseen. A rebuilt roof goes back warm. Insulation board is laid over the deck, the vapour control layer goes beneath the board, and the void that caused the trouble disappears.

We will not quote a flat roof by the square metre. The area is quick to measure and tells you little about the work.

The deck underneath. If the boards are sound, the new membrane goes straight over a prepared surface. Chipboard that has soaked for years, or ply that flexes under your foot, has to come out. You cannot see which from the ground, which is why Thomas lifts a corner before writing the quote.

How the water leaves. Plenty of older flat roofs were laid dead level, or drain towards an outlet that has since silted up. Firrings put a proper fall back in. It adds time, and it is what stops water sitting on the roof for days after rain.

Which system. EPDM rubber, GRP fibreglass and torch-on felt each suit different roofs and each price differently. A roof with upstands against old brick or flint walls takes more detailing than a plain garage, and every upstand, outlet and edge trim is worked one at a time.

Reaching it. On a narrow Bryanston estate lane the tower, the materials and the skip all need somewhere firm to stand, and the work at height rules make the access a line on the quote. A dormer top needs a scaffold.

When you compare, ask which system and how many layers, whether the deck is new or overlaid, and whether the falls are being corrected with firrings.

Bryanston sits in a conservation area shared with Blandford St Mary, and that changes the appearance of a flat roof rather than the construction of it. Replacing felt with felt is maintenance and needs no application.

Changing what the roof looks like from a road or a footpath is different, and so is adding a lantern, a row of rooflights or a bright new trim along an edge that can be seen. For a roof in Bryanston it is a short conversation with Dorset Council and it is much cheaper before the materials are ordered.

There are a number of listed entries around Bryanston, mostly on the school estate rather than in the ordinary housing. If your house is one of them, or a flat roof is attached to one, you need listed building consent even for a like for like repair, and that is a separate thing from planning permission. For an ordinary house neither usually applies, but check the Historic England list for your own address, and then the only decision left is which covering suits the roof.

From our base in Boscombe it is 17.3 miles to Bryanston, the estate village across the river from Blandford Forum. We also cover Blandford St Mary, Durweston and the rest of DT11, where Dorset Council is the building control authority for any flat roof re-cover.

The business belongs to Thomas Hannen, and he prices every flat roof himself after standing on it. The company is Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719. On Checkatrade, a verified customer scored us 10 out of 10. We charge nothing for the visit or for the itemised written quote. Before you book a visit in Bryanston, you can read our customers' Google reviews, word for word, on our reviews page.

Most repairs in Bryanston need no application at all. What decides whether a change to the outside of your house does is who the council is, whether a conservation area or a listing applies, and whether the place sits in a protected landscape.