Roofers in Congresbury

A river does not flood a roof, but it shapes the air around it. In a village where the Congresbury Yeo runs through the middle, many roofs sit in damp, still conditions for much of the year, and the signs show up in predictable places. Moss builds up on the north-facing slopes. Algae darkens the covering. Gutters fill with the debris of the nearby trees and hold water against the eaves.

Gutters take most of our attention in a place like this. A blocked gutter overflows over the back, not the front, so the water slips down the wall or in behind the fascia, the timber fixed along the bottom edge of the roof, and nobody sees it happen. Indoors, the first clue is usually a brown stain high on an outside wall or a damp corner by a window. By that point the fascia and the rafter feet have often been soaked repeatedly. We clear the gutters, check every joint and bracket, and tell you whether the run needs patching or replacing. Where replacement is the answer, we match the material and the profile to the house, so cast iron stays cast iron on an older frontage, and plastic goes in where plastic was.

Moss needs a measured response. Removing a thin layer can help a sound roof dry out, but scraping or pressure washing a tired covering can strip its surface and shorten its life. If tiles are already crumbling or the nibs (the small lugs that hang a tile from its batten) are failing, cleaning is the wrong spend, and we would tell you that. Where the covering is sound, a gentle clean and a clear gutter run is often all a damp site needs.

Valleys take double the water of a plain slope. If a valley lining is split or full of silt, it will leak long before the main covering fails. The whole eaves line, from gutter to soffit, is covered by our gutters, soffits and fascias work.

Congresbury lies on the northwestern slopes of the Mendip Hills, and houses that stand higher up take wind and rain with little to stop them. That is a general truth of hillside villages, and it shows up in the same places on every roof: the chimney stack, the ridge and the verge.

Of everything on a house, the stack stands tallest into the wind. Water finds three weak points. First, the flaunching, which is the angled mortar cap that seats the pots, cracks and lets rain run inside. Second, the pointing between the bricks or stones erodes. Third, the lead flashing where stack and slope meet works loose. Together these can let damp into a loft or a bedroom wall with no obvious hole in the roof. We inspect all three, and we match the repair to the stack. Old stone gets a lime mortar that is gentler than the stone itself, so damp escapes through the joint and not the face. A brick stack of a later date is treated as brick.

Next in line are the ridge and the verge, which is where the roof finishes over a gable end. Under BS 5534:2014, the British Standard for slating and tiling, mortar by itself no longer counts as a safe way to hold ridge, hip and verge tiles. We add a mechanical fixing to every one we re-bed or replace. Dry-fix systems, covered by BS 8612:2018, hold those tiles with clips and caps where a mortar bed would crack and drop away. On a roof that has been re-bedded more than once, they are frequently the tidier answer.

If a stack no longer serves a fire, we talk through whether to rebuild, cap or take it down, and what that involves in terms of consent and structure. Our chimney repairs page covers each option.

Figures: Congresbury entry, Wikipedia, checked October 2026