How gutter systems work
Gutters catch rain from the roof and carry it to downpipes. The downpipes then send it to a gully or drain. If any part blocks, water spills over the edge.
Over time, this can soak the walls and cause damp. Because the system works by gravity, it needs a steady fall. A sagging gutter can hold water and overflow.
How often should gutters be cleared?
Clear gutters at least once a year, and more often if trees overhang. Autumn is a good time, since most leaves have fallen. Check again after storms.
Moss and silt build up slowly, so check them regularly. Homes near trees need more care. A quick look from the ground after heavy rain can show a problem.
Signs of a gutter or downpipe problem
Look for overflowing water, stains on walls and plants growing in the gutter. Water dripping at joints also shows a fault. Damp patches inside, near the ceiling edge, may be a sign too.
A downpipe that gushes at the top or never carries water may be blocked. Meanwhile, cracks and loose brackets also matter. Fix small faults early, because they get worse.
DIY gutter maintenance: what you need
You need a stable ladder, gloves and a bucket. A small scoop or trowel helps. A hose lets you check the flow.
Safety comes first, because ladders cause many falls. Have someone steady the ladder, or hire a professional if you are not confident. Never lean over the edge.
What drainage engineers do when clearing gutters
A professional can clear gutters from the ground with special tools, or use safe access equipment. They can also check downpipes and the gully at the bottom. Some firms use a camera.
If you want a drainage engineer to help, you can ask for a free quote. We will pass your details to a local engineer.
Common repairs
Many repairs are simple. Re-seal a leaking joint, refit a loose bracket or fix a sagging section. Replace a cracked section if needed.
Use the right sealant and fittings for your gutter material. If the damage is large, replacing the run may cost less than repeated repairs, because patching can fail.
Downpipe clearance
A blocked downpipe can often be cleared with a gentle push of a flexible rod from below. Wear eye protection. Take care, since debris can fall out.
If water backs up at the base, check the gully. A blocked gully can send water towards the house. Clear it, then run water to test.
Lead valley gutters and parapet gutters
Some older buildings have lead valley gutters or parapet gutters. They sit behind walls or between roofs. Because they are hard to reach, ask a roofer with the right skills to look at them.
A blockage here can cause serious leaks. Do not climb onto roofs yourself. Arrange regular checks from a qualified person.
Related guides and local help
If you want to know more, read 10 Drainage and Plumbing Checks Before an HMO Inspection. You can also read Garden Drainage Solutions: How to Fix a Waterlogged Garden and HMO Plumbing and Drainage: Requirements and Best Practice, because they cover closely related problems.
These guides help too: Flood Risk and Drainage: What Property Owners Should Know, 6 Things That Can Void Your Home Insurance Drainage Claim, Seasonal Drainage and Plumbing Guide: What to Do Each Season, Home Insurance and Drainage: What Is Covered and What Is Not and Drain Maintenance Contracts: What They Cover, Who Needs One. Each one explains a related topic in plain English.
Need help near you? Read our drain jetting page first, or see Drain Jetting in Belfast and Drain Jetting in Berkhamsted. You can also see Blocked Drains in Clydebank, since every service page has a free quote form. We pass each request to a local drainage engineer.
