Flat roofing in Iwerne Minster

What fails is almost always the abutment. On an Iwerne Minster lean-to or outshot the covering has only a short run to make, and it is where it turns up an old wall that it gives out. Dressed against the face and pointed in cement, it lifts within a season or two.

So we look there first, then at the outlet, then at the folds and the laps. A crack, a burst blister, an opened seam or a trim off its fixings is a morning's work instead of a new roof.

Re-covering something small and irregular. Torch on felt suits these roofs. Three layers built up under a mineral cap sheet will follow an odd shape, run up several upstands and turn a corner without complaint. A plain rectangle is quicker in EPDM rubber, bonded down as a single sheet. Anywhere people stand takes GRP fibreglass, laid wet and cured to one skin with the trims in it. Single ply, welded at the joints, is for roofs bigger than the ones in Iwerne Minster. A day for a small roof, two to three working days for a garage or an extension.

What the deck tells us. Older roofs in Iwerne Minster can be boarded rather than sheeted, and where they are plywood, OSB or chipboard it is the chipboard that has gone. Firm decking gets covered over. Soft decking comes off, and the joist ends nearest the wall get the closest look, because that is where a slow leak has been sitting. Water lying about after rain means no fall was ever cut, so firrings or tapered insulation go in before any new covering. Where there is a room below, the rebuild is better as a warm roof: PIR above the deck, a vapour control layer under it, the timber kept above the dew point and interstitial condensation designed out. BS 6229:2025 on flat roofs, and Approved Document L over a heated room, both push that way.

Lead, upstands and openings. A cover flashing cut into a chase and wedged, not smeared along the surface. An apron in lead, in lengths short enough that it can move without splitting. An upstand carried up behind it with room to spare. A cavity tray only where a cavity exists, which on these Iwerne Minster buildings is often not the case. Copings and parapets sorted as part of the roof. A kerb formed for a rooflight, a lantern, a Velux, a hatch, a soil pipe or a vent pipe. Drip and edge trim, then the gutter, hopper and downpipe below.

Flat roofs in Iwerne Minster are mostly the add-ons: a kitchen outshot behind an older cottage, a garage beside a post-war bungalow, a porch or a dormer. Thomas comes out, lifts a corner of the covering to see the deck, and prices it himself.

The quote splits the job into access, taking up the old felt or asphalt, deck boards and any firrings needed to create a fall, insulation, the new membrane, the detailing at upstands, outlets and trims, and the skip. The strip and the new covering come under one written quote, with Thomas as your point of contact.

If the roof is at the back, everything may have to go through a side gate or down a passage. We agree that route with you and protect it before the first roll arrives. A roof is only opened as far as can be made watertight again that evening, and the old covering goes in our skip. Where joists under the deck have rotted, Thomas shows you a photo and prices them before any are replaced.

A re-cover in the same materials needs no planning application, and Planning Portal guidance on roofs sets out the limits. The village sits in the Iwerne Minster Conservation Area, so a change of material or colour on a roof seen from the road is worth a word with Dorset Council first. A new deck over a heated room counts as renovating a thermal element, so building control is told through a building notice or full plans and the insulation has to meet Approved Document L. If the house is listed, Dorset Council's listed building consent comes before any of it.

Ring, rather than using the form, if water is coming through under a flat roof. Splits, burst blisters and upstands pulling away from a wall let rain straight onto the ceiling, and a wet deck carries on rotting long after the weather clears.

On the first visit we stop the water with a temporary patch or a weighted sheet, and look at how far the deck has gone before pricing the proper repair. Put a bucket down and take anything electrical out of the room. Scheduled work runs Monday to Friday, 8am to 6pm. If your call goes unanswered, we phone you back as soon as we are able.

Call now: 07435 839745

Most of the walls a flat roof meets in this village are solid, not cavity, and they were built to let moisture move through and out again. That changes how the job is finished at the wall.

There is no cavity to put a tray into, so the whole defence at that junction is the height of the upstand and how well the cover flashing is chased and pointed in. And the pointing wants to be a lime mortar to match what is already there, because a hard cement fillet on soft old brick or stone cracks off in a season and takes the face with it.

It also changes how far we would go with a sealed warm roof build up against that kind of wall. The aim is to keep water out of the roof without stopping the wall breathing where the two meet. In practice that means detailing the abutment properly rather than running a bead of mastic along it, and it means being honest that on an old building the flashing is the part that needs doing well. If a quote you are comparing does not say what happens at the wall, that is the question to ask.

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

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