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Think you may have a leaking roof? It’s normal to worry — even a small leak can lead to damp, damaged insulation, and expensive repairs if it’s not dealt with.

The UK’s climate — particularly during prolonged, wind-driven autumn and winter rainfall — can expose weak spots in roofing that might otherwise go unnoticed.

If you think your roof is leaking, you'll find everything you need to know right here.

Is a leaking roof an emergency?

If you’ve spotted a small stain or damp patch that isn’t actively dripping, it’s not usually an emergency — but it does still need checking. Roof leaks rarely improve on their own.

A leaking roof is usually an emergency if:

• Water is pouring in, or dripping heavily through ceilings or light fittings

• The ceiling is bulging, sagging, or looks close to giving way

• The roof structure is exposed to wind or rain (e.g., missing tiles after a storm)

• There’s any risk water is reaching electrics (lights, sockets, fuse box)

If any of the above apply, contact a professional roofer immediately.

Find emergency roof leak repair near you

Search for trusted emergency roofing services near you with Checkatrade. Simply enter your postcode below to find checked and reviewed emergency roofers covering your local area.

First steps: what to do when you find a roof leak

If you discover a leak, focus on damage control, not repairs:

• Move possessions and furniture out of the affected area

• Contain the water with a bucket or container (a towel in the bottom can reduce dripping noise)

• Protect flooring with plastic sheets if you can

• Take photos (useful for insurers and for describing the issue to a roofer)

• If water could be near electrics, turn off power to the affected area at the consumer unit if it’s safe to do so

What causes a leaking roof?

Common causes of a leaking roof include:

• Broken, slipped, or missing tiles/slates (often after wind and storms)

• Damaged flashing around chimneys, roof joins, or abutments

• Blocked or broken gutters causing water to overflow into roof edges

• Worn roofing felt/underlay (age and gradual deterioration)

• Cracked seals around roof vents, skylights, or pipe penetrations

Extended periods of heavy or wind-driven rain can really test these vulnerable areas.

In the UK, repeated cycles of rainfall followed by drying can gradually weaken seals and flashing — which is why a leak sometimes appears after several days of bad weather rather than during the first shower.

How to detect a roof leak safely

You can look for a few clear signs without climbing onto the roof (which is high-risk and can make damage worse):

Check ceilings and walls

Look for:

• Water stains or brown marks

• Damp patches that grow after rainfall

• Peeling paint, bubbling plaster, or mould smells

Look in the loft (if it’s safe)

If you can access your loft safely:

• Use a torch to look for damp timbers, wet insulation, or visible drips

• Note whether it’s worse after heavy or wind-driven rain

Check from ground level outside

From the ground (or an upstairs window):

• Look for missing tiles/slates, sagging areas, or obvious storm damage

• Look for overflowing gutters or damaged downpipes

4 telltale signs your roof is leaking

• Water stains on ceilings or upper walls

• Dripping or damp that appears after rainfall

• Damp marks on outside walls near roof joins

• Mould or persistent musty smells, especially in upper rooms or loft spaces

Flat roof leaks: why they’re harder to trace

Flat roof leaks can be tricky because water can travel across the surface and through layers before it appears inside.

Here are the signs to look for:

• Dark damp patches on ceilings

• Pooling water or ‘ponding’

• Sagging, dips, or areas that look soft

• Debris rings (a clue that water has been sitting)

If access is difficult or the roof is slippery, it’s safer to call a professional rather than attempting an inspection.

Conservatory roof leaks: common weak points

Conservatories are exposed to sun, wind, and heavy rain — so seals and joins can degrade over time.

If you're experiencing a conservatory leak, check (from inside):

• Corners and where roof panels meet

• The join where the conservatory meets the house (often linked to flashing issues)

Before doing any DIY, check whether:

• Your conservatory is still under warranty

• The leak relates to storm damage (which may affect insurance cover)

What not to do if your roof is leaking

It can be tempting to try a quick fix, but avoid these common mistakes:

• Don’t climb on the roof, especially in wet or windy weather

• Don’t try to permanently seal the leak from inside — it can redirect water elsewhere and worsen hidden damage

• Don’t ignore small leaks — long-term moisture can damage insulation, timbers, plaster, and air quality

Who to call about a roof leak

In most cases, your first call should be a professional roofer. They can:

• Diagnose the entry point (including flashing and membrane issues)

• Check surrounding areas for secondary damage

• Carry out repairs designed to stop the leak returning

If you also have internal damp damage (plaster, ceilings), you may later need a decorator or plasterer — but start with the roofer so the source is fixed first.

What a roofer will usually do to fix a leaking roof

Rather than a single ‘one-size’ repair, roof leak fixes typically fall into categories like:

• Replacing or re-securing damaged tiles/slates

• Repairing or replacing flashing

• Addressing guttering issues that are forcing water into the roofline

• Fixing membrane/felt issues identified during inspection

• Checking vulnerable joins (chimneys, valleys, abutments)

How much does roof leak repair cost?

Roof leak repair costs in the UK vary depending on the extent of the damage and the type of roof.

As a general steer:

• Minor tile repairs (pitched roof): from around £110–£160 per m² (clay tiles)

• Emergency call-out fees: typically around £350

• Extensive pitched roof repairs or renovation: can run into the thousands, particularly if structural work is required

For other roof types:

• Conservatory roof repairs: often range from around £120–£170 per m² for polycarbonate (repair costs depend on size and construction)

• Flat roof repairs: bitumen flat roof repairs may cost around £100–£140 per m², plus labour (often £280–£360 per day)

Costs increase if:

• Structural timbers are damaged

• Large sections of roofing need replacing

• Scaffolding or access equipment is required

Our roof repair cost guide has detailed pricing information to help you plan for what to expect.

Every roof is different, which is why an inspection is usually the only way to understand the true scope of repair — or whether replacement makes more sense.

Is a leaking roof covered by insurance?

Whether a leaking roof is covered by insurance depends on the cause:

• Insurance may cover sudden, unexpected events (for example storm damage)

• Insurance usually won’t cover wear and tear or lack of maintenance

If you’re unsure, take photos and check your policy wording carefully — insurers often want evidence of cause and extent.

Leaking roof checklist

• Check whether it’s an emergency (active dripping, sagging ceiling, exposed roof structure)

• Move furniture and contain water safely

• Take photos for insurance and documentation

• Avoid climbing onto the roof

• Contact a professional roofer for inspection

• Check your insurance policy if storm damage is involved

Find a roofer near you

A roof leak can affect your home’s structure, insulation, and indoor air quality — getting the right help quickly can make a big difference.

Before you book, take a quick look at our roofer hiring guide. It helps you spot the pros from the cowboy — reminding you to check they're fully insured, have a track record of verified reviews from real local jobs, and have passed a thorough background check.

Then, search your postcode to compare checked, reviewed roofers near you with Checkatrade and request quotes with confidence.

FAQs

How urgent is a small roof leak?

Even small roof leaks should be checked promptly. Unfortunately, a slow leak can still cause damp, mould, and damage to insulation or timbers over time.

Can a roof leak stop on its own?

In reality, it’s unlikely a roof leak will stop on its own. Leaks often worsen with repeated rainfall and temperature changes, even if they seem to 'disappear' temporarily.

What’s the most common cause of roof leaks?

Damaged tiles/slates, flashing problems, and overflowing gutters are among the most common causes of roof leaks.

Should I go into the loft if my roof is leaking?

Only go into your loft to check a roof leak if it’s safe and dry underfoot. Use a torch, avoid touching electrics, and don’t climb onto the roof itself.

Should I call a roofer or a general builder for a roof leak?

For roof leaks, start with a roofer for diagnosis and repair. They’re best placed to find the entry point and stop the leak returning.

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