Late September is when UK houses meet two things at once: heavier rain after a dry spell, and debris that the summer never flushed. A gutter that looked empty in July can sheet water down the brick on the first wet Friday. That overflow is not automatically a failed roof. It is often a trough that cannot take the water to the downpipe. This piece is that distinction. It is not a quote, not a flood-defence product, and not a survey.
If water is already dripping through a ceiling, skip the garden walk and open the leak guide, then roofing on the directory. Use the number on the card. This site does not email the business for you.
Why this downpour is different
Summer showers often drip off a half-blocked gutter and dry before anyone looks. The first autumn front sits on the house for hours. Leaves from a neighbouring sycamore, moss washed off the tiles, and a football that landed in the trough in May all meet that volume at the same moment. The water has to go somewhere. If the outlet is stuffed, it goes over the front, behind the gutter, or into the cavity at the eaves.
That is also when households start reading flood warnings. A blocked gutter on a terrace is not the same as a river coming over a bank. GOV.UK’s check for flooding service and the long-term flood risk checker (England) tell you about rivers, the sea, surface water and reservoirs. They do not tell you whether your own downpipe is full of wet leaves. Scotland, Wales and Northern Ireland have their own checkers linked from those pages. Do not treat a national warning as a diagnosis of the fascia.
What overflow looks like from the garden
Stand far enough back that you can see the whole run, both corners and the top of the downpipe. Daylight is better than a phone torch after dark. You are looking at the path of water, not hunting for a missing slate — that is the ground-level roof check.
| What you see | Likely meaning | Next step |
|---|---|---|
| Water sheets over the front of one bay, downpipe dry or dribbling | Blockage at the outlet or in that length | Stay on the ground. Note which bay. Call if it repeats |
| Whole run overflowing, downpipe coughing leaves | The pipe or the shoe is stuffed | Clear the gully only if you can reach it from the path |
| Gutter sagging or pulled off the fascia | Brackets failed or the trough is heavy with wet debris | A roofer. Do not push it back up from a ladder |
| Clean overflow at one joint, rest of the run behaving | A split, a slipped union, or a fall that is the wrong way | Photograph it. That is a repair, not a sweep |
| Wall wet under the eaves, loft dry, no missing tiles | Water coming over or behind the gutter | This guide, not a new roof |
| Wet loft, tea-coloured ring on the ceiling, tiles on the lawn | The covering, not only the gutter | Use the leak or roof-check pieces and call |
Watch for a minute, not a second. A gutter can look empty between gusts and then pour when the next sheet of rain hits the pitch. Note the bay — front left, rear valley, above the bay window — so the person you later phone is not guessing the whole elevation.
Downpipes, gullies and the path of water
A clear trough still fails if the water has nowhere to go at ground level. Walk the foot of each downpipe after the rain, or during it if the path is safe.
- Is the shoe or hopper coughing water sideways onto the wall instead of into the gully?
- Is the gully grate buried under leaves, gravel or a plant pot that “only sits there in summer”?
- Does the yard hold a puddle that reaches the airbrick or the threshold?
- On a shared terrace, does your neighbour’s pipe discharge onto your path? Say so on the call. It changes who owns the run.
A gully you can reach from the path can often be lifted and emptied with gloves. That is gardening-height work, not roof work. Open gardening and external maintenance if the job is leaves, paving and a grate you can stand beside. Open roofing if the blockage is in the gutter, the hopper at first-floor height, or the pipe is split on the wall. A listing that mentions “guttering” is still a quote after someone has been, not a price this site can honour.
The roof-area calculator helps you describe lengths when someone asks for the run. It does not tell you why this morning’s overflow happened.
What you can do without a ladder
Most of the useful check is at eye level. Photograph the wet stripe on the brick, the dry downpipe, and the gully. From an upstairs window you can often see whether the trough is full of compost or sitting at a twist. That is enough for a first call.
HSE’s guidance on using ladders is written for people at work, but the physical point is the same for a householder: do not rest a ladder against weak upper surfaces such as plastic gutters or glazing, keep it on firm level ground, and do not overreach. Wet lawn, a conservatory roof, and a two-storey plastic trough fail those tests. A telescopic pole and a camera on a stick beat a wobble over the bay.
If you already own a stable ladder, the ground is paving, and the eaves are a bungalow you can reach without standing on the top rungs, a short look into the trough can confirm leaves versus a broken outlet. Put the ladder away the moment you would have to stretch, lean the stiles on the gutter, or climb with a bucket. That is the roofer’s visit, not a Saturday job.
Do not walk the covering to “just scoop the valley”. Wet slate and tile are a fall. So is a flat roof you have never loaded. If the only way to see the blockage is from above, stop.
When to put the bucket down and call
Stop the homeowner sequence if any of these apply. They are not “wait for a dry Sunday” problems.
- Water is in the house — dripping, a bowing ceiling, or a wet patch on the inner face of an outside wall that was dry yesterday.
- The gutter has come away, is hanging, or has dropped a section onto the path.
- The overflow has soaked an electrical fitting, an outdoor socket, or a light on the eaves. Keep clear and treat it as live until an electrician says otherwise. Open electrical if that is the job.
- The same bay overflows on the next ordinary shower, not only on a named storm. The outlet is not going to free itself.
- You are a tenant. Many tenancies put gutters and rainwater goods on the landlord. Tell them what you saw — which elevation, during which rain, whether the loft is dry — before you book a visit they have not agreed.
A stain that appears only after rain and sits under the eaves, with a dry loft, is still worth a call if the brick is staying dark. Repeated wetting of the fascia and the top of the wall is how rot and a later damp patch start. That later mark is covered in the damp-patch guide. Do not paint it while the gutter is still pouring.
Flood risk is not a blocked gutter
Surface water in the street, a river alert, or water coming under the front door is a different problem from a trough that cannot drain. GOV.UK’s prepare for flooding pages, last pointed at from the flood-risk services above, tell you how to get warnings and how to make a plan. The personal flood plan on GOV.UK was updated on 15 November 2023. It asks you to know how to turn off electricity and water, and to keep documents above the wet. Floodline for England is 0345 988 1188. This site does not issue warnings and does not sell barriers.
If the house is taking water through the door or the airbricks, that is not a gutter-clear. Follow the official advice for the warning you have been given, then deal with rainwater goods when it is safe to stand outside. A roofer cannot sandbag a river.
What to have on the call
Have the elevation, which bay overflowed, whether the downpipe ran, whether the loft is dry, and whether anything has come off the wall. Say it happened on the first long autumn rain, not “the roof is leaking”, unless you have seen water through the covering. Ask whether the first visit is a clear-out, a repair to brackets, or a survey of the fascia, and whether access equipment is extra. Ask whether the first figure is plus VAT.
Open the directory — for example roofing in Manchester or roofing in London — and use the number on the card. For a grate you can stand beside, start with gardening. For pounds on a later recover, use the cost notes as a briefing, not as a price this site can honour.
Need a number after the overflow?
Open roofing, pick the city, and contact the business yourself.