Roof Repairs Heswall

Professional Roof Repairs in Heswall

Heswall is built on a hill, and the houses reflect it. Large detached properties on sloping plots, extended more than once, with roofs that step, turn, join and change level as they go.

Interesting roofs are handsome and they are also, from a leak point of view, mostly junctions. Every place one roof meets another roof, or meets a wall, or changes direction, is a place that has to be weathered by a detail rather than by the covering itself.

Those details are where nearly all our Heswall work is, and they are worth understanding because they are also where the poor workmanship on other people's repairs tends to be found.

Finding Weak Points Around Roof Junctions

Start with the abutment: where a pitched roof runs up against a vertical wall, which happens at every two-storey extension. It is weathered with two pieces of lead working together. Soakers are small individual pieces laid between each course of tiles or slates, turned up against the wall. Over them sits a cover flashing or a stepped flashing, cut into the mortar joints and wedged, dressed down over the soakers.

Both pieces have a job. The soakers stop water getting under the covering; the flashing stops water running down the wall from getting behind the soakers. A repair that renews one and not the other is half a repair, and a repair that replaces both with a bead of mastic is not a repair at all.

Then the valley: where two slopes meet in an internal angle and drain into each other. A valley carries the water from both slopes, which means it carries a lot, and it concentrates it into a narrow channel. Valleys fail because the lining fails, because debris dams them, or because the tiles either side have been cut too tight and there is not enough free width for the water. That last one is a workmanship fault and it is commoner than it should be.

Then the saddle: the small piece of leadwork where a ridge runs into a wall or where two ridges meet. It is fiddly, it is invisible from the ground, and it is skipped more often than any other detail on a complicated roof.

And then the back gutter behind a chimney — the horizontal channel on the uphill side of a stack that has to catch everything coming down the slope above and take it round both sides. On a wide chimney on a shallow pitch that gutter is doing serious work, and a back gutter that has been formed too shallow, or has silted up, will overflow into the roof every time it rains hard.

The reason we go through all of that is simple: when a Heswall roof leaks, the question is almost never "which tile" and almost always "which junction". Anyone who looks at a roof like this and starts talking about tiles has not understood the building.

Sealant Is Not a Detail

The single most common thing we find on a previously repaired junction is silicone or bituminous mastic smeared over the top of it. It works for a season, sometimes two. Then it shrinks, cracks, and traps water behind itself rather than shedding it, so the roof is worse than before anyone touched it.

Lead junctions work because water is directed by shape and gravity, with laps and upstands sized for the job. There is no product you can apply over a failed junction that turns it back into a working one. If somebody has sealed yours, budget on it needing doing properly rather than doing again.

Repair or Replace in Heswall?

On a complicated roof, replacement is rarely the answer to a junction problem and is often an expensive way of avoiding one. A sound covering with a failed abutment or a silted valley needs the junction rebuilt, not the roof renewed.

The exception is where the covering and the details have gone together, which does happen on roofs that have been extended piecemeal over decades and never had a coherent overhaul. There, doing the junctions in isolation is buying time on a roof that will keep asking. We will say which of the two we have found.

Storm Damage & Emergency Roof Repairs in Heswall

On the exposed western side above the Dee, post-gale damage in Heswall is usually flashings and ridge rather than whole slopes — the wind finds the raised details on a complicated roof before it finds anything flat.

On a roof with several levels, a piece of lead lifted at one junction can put water into a part of the house nowhere near it, so an apparently minor bit of storm damage is worth looking at properly rather than assuming it is cosmetic.

Emergency call-outs run 24 hours a day, Monday to Friday, with Saturday and Sunday cover from 8:00 to 19:00.