Flat roofing in Bransgore

Wind gets under an edge, it does not come through the middle. On a Bransgore roof this exposed, almost every failure starts at the perimeter. A trim whose fixings have pulled. A lap that has peeled back. A corner curled up. A fold cracked from being flexed once too often.

Inside that boundary the covering is often still sound. So we walk the edges and press them first, then follow the falls inwards to the outlet, which out in Bransgore is usually packed with needles and leaf litter. Every one of those is an hours job rather than a new roof.

Choosing a covering for an open plot. Where a surface has hardened past saving, off it comes. EPDM rubber arrives as one sheet, bonded down, so on a simple garage nothing runs across the middle to fail. GRP fibreglass is rolled out wet and sets hard as a single skin, trims and all, which is what we want under anything that gets stood on. For a roof full of steps, upstands and pipes, torch on felt built up in three layers under a mineral cap sheet is still the most forgiving thing to lay. A big span takes single ply, hot air welded at the joints. Reckon on two to three working days for a garage or a small extension.

What is underneath. Decks in Bransgore are plywood, OSB or chipboard. Dry and firm, we can lay straight over it. If it flexes, it is out, and the joists get inspected while the roof is open. Water that stays put after the rain has gone is a fall problem, not a covering problem, and it gets solved with firrings or with tapered insulation cut to run at the outlet. Given the choice on a rebuild we put the insulation on top: rigid PIR over the deck, vapour control layer below it, so the timber never drops to the dew point and interstitial condensation cannot get started. The old cold roofs, insulated between the joists and starved of air, are the ones most likely to be rotten underneath. That is the argument in BS 6229:2025 on flat roofs and, over a heated room, in Approved Document L.

Detail, which is where an exposed roof is won or lost. Perimeter trims fixed to hold rather than to look tidy. Laps welded or bonded right through instead of dressed over. An upstand carried higher than the bare minimum where the roof runs into a wall, its cover flashing cut into a chase, and an apron in lead where lead is already on the building. A cavity tray if there is a cavity to take one. Kerbs built up for a rooflight, a lantern, a Velux, a hatch, a soil pipe or a vent pipe. Parapet and coping checked. Drip and edge trim set out. Gutter, hopper and downpipe below all clear and running.

Thomas comes out, gets onto the roof or into the garage underneath it, and looks at the deck before he prices anything. A lot of the flat roofs in Bransgore sit on garages, single storey extensions and the dormers of chalet bungalows built in the seventies and eighties, and many of them still have the original felt on the original deck.

The written quote puts access, stripping the old covering, any new deck or firrings, the insulation, the membrane, each upstand, outlet and edge trim, and disposal on their own lines, so you can see what each part costs and compare it with any other quote you get.

A garage on a drive comes off a tower. A dormer on a chalet bungalow needs a scaffold, because you are working at first floor height over a tiled slope. Nothing is left open overnight: if the deck is up at the end of the day, it is sheeted and weighted. The drive is swept each evening and the old felt leaves with us. If the joists turn out to be rotten, work stops while you look at the photos and a written price for the extra timber.

Re-covering as it stands is maintenance, and Planning Portal guidance explains the permitted development limits. Raise the roof line, or insulate over a room you live in, and building control applies through a building notice or a full plans application to New Forest District Council. Bransgore has no conservation area.

If a flat roof is letting in, catch the water, and if it is over a garage, look up at the ceiling. A chipboard deck that has been wet for weeks sags between the joists, and you should keep out from under it.

Do not go up to sweep water off, because a wet membrane is slippery and an old deck may not hold you. Pick up the phone for this, because the form is slower. Planned jobs are done Monday to Friday between 8am and 6pm, and if nobody answers, one of us calls you back as soon as we are off the roof. A temporary cover then goes over the split or the lifted upstand. Once we can see how far the deck has gone, the permanent job is priced.

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The weather that damages roofs around Bransgore comes off the south west, and on a flat roof wind does its work at the perimeter and the corners rather than across the middle. Air gets under a lifted edge, pressure builds, and the covering peels back from the trim inwards.

That is why on an exposed plot we care more about how the edge is held down, how the laps are welded or bonded and how tall the upstand is than about which system goes on top. A cheap job usually looks identical to a good one from the ground, and the difference is entirely in the detail at the edges.

Driven rain does something similar. It does not fall onto the roof, it is pushed at the vertical parts, so the joint at a rooflight kerb, the top of an upstand and a cover flashing that was only ever tucked rather than chased are the places it gets behind. If your roof is on the open side of Bransgore, tell us when you ring. It changes what we specify, and it changes what you should be checking on anybody else's quote.

Nearby places we also cover for flat roofing, with straight-line distances from Bransgore, and the other trades we offer in Bransgore itself.

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