On a flat roof the stain inside rarely lies under the fault. Tracing the leak takes patience and method. Here is how we find the entry point and put right a leaking flat roof in Pucklechurch.
Flat roofs on extensions, garages, porches and dormers can leak for reasons that are hard to spot from above. Water slips under the covering and travels before it shows. A sensible repair starts with finding where it really gets in, then dealing with that and anything it has soaked.
Start with the story
We ask when the leak appears, whether it follows heavy rain or wind, and where the stain sits. Sudden drips after a downpour suggest a split or blocked outlet. A slow damp patch that never fully dries suggests water has been getting in for a long time and is trapped beneath.
It helps if you note the weather, the room and the time of each drip. A leak that only follows long rain points to a different cause than one that appears after a short burst, and details like that save time on site.
Looking at the surface
We inspect the covering for splits, blisters, open joints, lifted edges and cracked patches. We look at the outlets, the trims and the places where the roof meets a wall or a rooflight. Standing water can point to poor falls or a blocked outlet, and either may be the cause of the leak.
- Cracks, splits or blisters in the covering
- Lifted edges, trims and open seams
- Upstands and abutments where roof meets wall
- Outlets and gutters blocked or sitting too high
Following the water inside
From the room below we note the staining pattern and, where possible, look at the deck from the loft or ceiling void. Wet insulation and dark, soft timber show where water has reached. Sometimes we gently open a small section of the roof to find how far the moisture has spread.
Where the covering cannot be inspected easily, such as a porch or a bay top, we look at the edges and any wall junction closely. Those details are the usual suspects, because they are where movement and weather combine. A tidy, dry detail there often cures a leak that looks mysterious from inside.
Putting it right
A local fault is repaired by cutting out and replacing the failed section, bonding a new joint or rebuilding an upstand. Wet insulation or a rotten deck is removed and renewed first. Where the covering is failing widely, replacing the whole roof is more honest than layering patches on top.
What to expect and ask
Ask what the cause was, what was found under the covering and whether the repair is a patch or a proper fix. Materials such as single-ply rubber, fibreglass or felt systems are discussed in plain terms. Expect a written description of the work and a tidy site afterwards.
Afterwards we explain what was done and what to watch for. A repaired roof should be checked after the next heavy rain, and you should feel able to ring us if anything looks different rather than leave it for another season. Small signs caught early are easier to deal with than a ceiling coming down.
Frequently Asked Questions
Why does my flat roof leak far from the stain?
Because water travels along the deck, insulation and the underside of the covering before it drips. The stain can be a long way from the real entry point, which is why we trace it systematically, not just patch above the mark.
Can a flat roof leak be fixed in wet weather?
Temporary measures are sometimes possible, but a lasting repair needs a dry surface and dry deck beneath. We advise on what can be done safely in the meantime and arrange the proper repair for suitable conditions.
What if the deck turns out to be rotten?
Then the rotten timber is cut out and replaced before any new covering goes on. Fitting a new surface to a wet or soft deck would only fail again, so we show you what we find and explain the work needed.
Talk to our team about flat roofing in Pucklechurch
Every roof is different — the fastest way to get an accurate answer is a quick chat with our team.