Roof Maintenance Checklist: Preparing Your London Home for Winter

British winters aren’t dramatic compared to some climates, but they’re hard on roofs in a specific way — long stretches of rain, sudden cold snaps, and enough wind to find every weak point a roof has. A roof that’s coped fine all summer can start showing problems within weeks once the weather turns, and most of those problems are cheaper to prevent in September than to fix in January.

This checklist covers what’s worth doing before winter sets in, roughly what order to do it in, and which jobs are safe to do yourself versus which ones genuinely need a professional.

Why Timing Matters

The best window for pre-winter roof maintenance in London is September through late October. This gives enough time to book a contractor before the busy pre-Christmas period, book any necessary work while weather still allows for it comfortably, and catch problems before the wettest months put them under real pressure. Leave it until December and you’re often choosing between a longer wait for a contractor or living with a known issue through the worst of the weather.

1. Clear the Gutters

This is the single most commonly skipped maintenance task, and one of the most consequential. Leaves, moss and general debris block gutters through autumn, and a blocked gutter doesn’t just overflow — it holds water against the roofline and fascia boards for longer than they’re built to handle, which accelerates rot in timber fascias and can force water back up under roof tiles at the eaves.

Clearing gutters is a reasonable DIY task if you have a stable ladder and someone to foot it, though for anything above a single storey or a property with awkward access, it’s worth having done professionally alongside a roof check rather than as a separate job. See our guttering and fascias page for what a professional gutter service typically includes.

2. Check for Loose or Displaced Tiles

Walk around the property and look at the roofline from a few different angles — front, back, and from next door’s driveway if you’re on good enough terms to ask. You’re looking for tiles that look tilted, out of line with their neighbours, or visibly cracked. This is genuinely one of the more common issues found ahead of winter, since summer storms often loosen tiles just enough that they haven’t fully displaced yet.

Anything spotted here is worth having fixed before winter rather than after, since a loose tile that survives summer winds often doesn’t survive a proper winter storm.

3. Inspect Flashing Around Chimneys and Roof Junctions

Flashing — the metal (usually lead) sealing the joints where a roof meets a chimney, a wall, or a dormer window — is one of the most common sources of leaks precisely because it’s a junction rather than a flat surface. From the ground, look for flashing that’s visibly lifted, cracked, or where the mortar pointing above it (the “flaunching” around a chimney) looks crumbly or missing in places.

This isn’t something to inspect closely from a ladder yourself — flashing problems are best assessed by someone who can safely get onto the roof itself. Our leadwork page covers what’s involved in a proper flashing repair.

4. Check the Loft for Damp, Daylight or Poor Insulation

Head into the loft during daylight hours with the light off and look up. Any daylight visible through the roof means there’s a gap that needs attention. While you’re up there, check that insulation is evenly spread, not damp or compressed anywhere, and that there’s no musty smell suggesting ongoing moisture.

This is also the moment to check loft ventilation isn’t blocked — insulation pushed right up against the eaves can block the airflow roofs need to avoid condensation building up inside the roof space over winter, which causes its own separate set of timber problems.

5. Clear Moss and Vegetation

Moss holds moisture against roof tiles, and going into winter with a heavy moss covering means that moisture sits there through the coldest, wettest months, right when the roof covering is under the most stress. A light moss covering on a shaded slope isn’t usually urgent, but thicker growth is worth clearing before winter rather than after, since moss growth typically accelerates over winter rather than slowing down.

Trim back any tree branches overhanging or touching the roof at the same time — this reduces both physical wear on tiles and the amount of leaf litter that ends up in gutters over autumn.

6. Check Skylight and Roof Window Seals

If the property has skylights or roof windows, check the seals around them for any visible cracking or gaps, and check the frame for any staining that suggests past water ingress. Skylight seals degrade with UV exposure and temperature swings over years, and a failing seal is a very common source of leaks that get blamed on “the roof” when the actual roof covering is fine.

More detail on skylight maintenance and installation is on our skylights page.

7. Check the Condition of Fascias and Soffits

Fascias (the boards running along the roof edge, usually holding the guttering) and soffits (the panels underneath, covering the roof’s overhang) take a lot of weather exposure and are often the first thing to show wear — peeling paint on timber fascias, or visible warping on older UPVC. Damaged fascias let water get behind them and into the roof structure, so it’s worth including in the same visual check as the gutters.

8. Book a Professional Inspection

Everything above is a reasonable homeowner-level check from the ground or the loft. A proper professional inspection goes further — actually getting onto the roof to check tile fixings, examine flashing up close, and assess the condition of the underlying felt or membrane, none of which is safely visible from below. Booking this in September or October, rather than waiting for a problem to force the issue in January, is the single biggest thing that separates a manageable winter from an expensive one.

What’s Safe to DIY vs What Isn’t

Reasonably safe to do yourself: gutter clearing from a stable ladder on a single-storey section, a visual roofline check from the ground, a loft inspection for daylight and damp, and trimming back overhanging branches that are within safe reach.

Not worth attempting yourself: anything requiring you to actually stand on the roof, close inspection of flashing or chimney leadwork, tile replacement, or any work above a single storey without proper access equipment. Roofing is more dangerous than it looks even for straightforward-seeming tasks, and the cost of a professional visit is almost always lower than the cost of an accident or a mistake that damages the roof further.

What Skipping This Actually Costs

It’s worth being concrete about why this list matters rather than treating it as generic good advice. A blocked gutter left over winter doesn’t just mean water splashing down the side of the house — the water that backs up regularly finds its way behind fascia boards, and by spring, a job that would have been £40 of gutter clearing in September can turn into a £400-plus fascia repair, sometimes with damp patching needed on an internal wall below where water has tracked through.

A single loose tile ignored through a windy winter is a similarly common story. Left alone, wind gradually works it looser until it either falls off outright (creating an obvious gap and typically the first sign anyone notices) or lets enough water through to damage the felt and battens underneath, which turns a same-day repair into a job requiring several tiles replaced and sometimes a section of new underlay. None of this is unusual — it’s the normal way small roof problems escalate when they’re left through a full winter rather than caught in autumn.

Common Mistakes Homeowners Make

Waiting for a leak before calling anyone. By the time water is visibly coming through a ceiling, the problem has usually existed for weeks or months already. Prevention-focused checks catch issues before they reach that stage, which is both cheaper and far less disruptive than dealing with an active leak mid-winter.

Assuming a recently built extension doesn’t need checking. Newer flat roofs, particularly felt ones, have a shorter expected lifespan than people assume, and a five- or six-year-old flat roof extension is well within the age range where checking makes sense, not just the original pitched roof.

Clearing gutters but skipping the downpipes. A gutter can look clear while the downpipe beneath it is blocked with compacted leaves further down, which still causes overflow at the top even though the visible gutter section looks fine. Running a bit of water through after clearing is a simple way to confirm the whole system, not just the visible part, is actually flowing.

Not checking after the first big storm of the season, and instead waiting for the scheduled spring check. The point of an autumn check is to catch problems before winter, but a fresh check after the first serious storm of the season catches anything that’s shifted since, and costs nothing beyond five minutes looking up from the garden.

September: Clear gutters, do the visual roofline and loft checks, book a professional inspection if anything looks off.

Early October: Get any identified repairs done — this is generally still good working weather and before contractors get fully booked for the season.

Late October: Final gutter check once most leaves have fallen, trim any remaining overhanging branches.

Through winter: After any significant storm, a quick visual check from the ground is worth doing, just to catch anything that’s shifted before the next spell of bad weather arrives.

FAQ

How often should gutters be cleared?

Twice a year is a reasonable standard for most properties — once in autumn after leaves have mostly fallen, and once in spring to clear anything winter weather has left behind.

Can I check my own roof for problems, or do I need a professional?

Ground-level and loft checks are safe and useful to do yourself. Anything requiring you to get onto the roof itself is best left to someone with the right equipment and experience.

What’s the most common winter roof problem in London?

Blocked gutters causing water to back up under roof edges, and loose tiles from storm winds, are the two most common issues we see going into winter across Hayes and West London.

Is it worth getting an inspection if nothing looks obviously wrong?

Yes — several of the more serious issues, like early flashing wear or slightly displaced tiles, aren’t visible from the ground even when they’re already a problem. A proper inspection catches things before they become visible, which is exactly the point of doing it proactively.

Book Your Pre-Winter Roof Check

Roof Techies offers roof inspections across Hayes and West London, ideal for catching problems before winter weather makes them worse. Call +44 7414 851249 or use the contact form to book a visit before the season gets busy.