By the time the first proper gale of November arrives, it’s too late to find out your gutters are full of moss. Water doesn’t wait politely while you ring round for someone with a ladder, and roofers’ diaries fill up quickly once the weather turns.
Carlisle gets a lot of rain, a fair bit of wind off the Solway and the odd hard frost, and that combination finds every weak point on a roof. The good news is that most winter problems start small and cheap to fix. Here’s what we check on an autumn roof inspection, what you can look at yourself, and what the usual jobs cost in 2026.
Why an Autumn Check Is Worth the Money
A leak in January is rarely a January problem. It’s usually a blocked gutter from October, a cracked mortar fillet from last spring, or a slate that’s been loose for two years and finally let go.
When homeowners ring the team at Roof Repairs Carlisle, the jobs that cost the most are nearly always the ones that were left. A £120 gutter clear in October is a lot cheaper than a new bedroom ceiling and wet loft insulation in February. An inspection with photos usually costs £75 to £150, and many roofers will knock it off if you go ahead with any work.
Here’s the order we go through things.
Gutters and Downpipes
Gutters do more work than people give them credit for. A typical semi’s roof can shed several hundred litres of water in a heavy downpour, and all of it has to go somewhere.
What we look for:
- Leaves, moss that’s washed off the roof, and the odd tennis ball. Clear gutters should hold no standing water an hour after rain.
- Sagging sections. Brackets fail and gutters drop, so water pools and spills over the front.
- Leaking joints. Old cast iron rusts at the joints, and plastic gutters lose their rubber seals.
- A blocked downpipe can push water back up and into the wall. Check the shoe at the bottom isn’t buried in leaves.
Gutter clearing for a typical house costs £80 to £180. Resealing or replacing a few joints adds £50 to £150, and new uPVC guttering on a semi usually comes in at £400 to £900 fitted.
Moss and Debris on the Roof
Moss itself isn’t the end of the world, but thick clumps hold water against the tiles, lift the edges and get washed into the gutters. On north-facing slopes and under trees it builds up quickly, and our damp climate suits it perfectly.
We remove it by hand with scrapers, then apply a biocide treatment to slow regrowth. We don’t pressure wash roofs. It strips the surface off concrete tiles, forces water under the laps and can crack older slates. Expect £300 to £700 for moss removal and treatment on an average house, depending on access and how bad it is.
Flashing and Valleys
Flashing is the seal between the roof and anything that sticks through it or abuts it: chimneys, walls, dormers and porches. Valleys are the internal channels where two roof slopes meet. Both carry a lot of water and both fail quietly.
Lead Flashing
Good lead flashing can last 50 years or more, but it can lift in strong winds or crack if it was fitted in lengths that were too long. We check it’s tucked properly into the brickwork and that the mortar holding it in is sound. Re-dressing and re-pointing old lead typically costs £150 to £350. Replacing a chimney’s flashing completely is usually £350 to £900.
Valleys
Lead valleys can split, and the newer GRP or fibreglass valleys can crack or come loose at the edges. Mortar-bedded valleys on concrete tiled roofs crack and wash out over time. A clogged valley is one of the most common causes of winter leaks we see, because it overflows sideways into the roof. Clearing a valley is often under £150. Replacing one usually runs £600 to £1,800 depending on length and material.
The Chimney
Chimneys take the worst of the weather because they stick up above everything else. On the older terraces in Denton Holme, Currock and Botcherby, many stacks are built of brick or local red sandstone, and sandstone in particular can weather and spall (flake away at the surface) after years of freeze and thaw.
What to check:
- Cracked or missing mortar in the brickwork or stone joints
- The flaunching (the mortar bed around the chimney pots at the top) cracked or crumbling
- Pots that lean or have cracked
- Damp patches on the chimney breast inside, particularly in upstairs rooms
Repointing a typical chimney stack costs £400 to £1,000 with access. New flaunching is usually £200 to £450. If you have a disused chimney, fitting cowls or caps with ventilation stops rain coming down it, usually £60 to £150 per pot.
Scaffolding is often the biggest single cost on chimney work. Expect £500 to £1,200 for a chimney scaffold on a two-storey house, though roof ladders or a tower can sometimes do for small jobs.
What You Can Check Yourself
Please don’t go up on the roof. Most problems are visible from the ground or the loft.
- Walk round the house with binoculars after rain. Look for slipped slates, gaps in the ridge and lead that’s lifted.
- Watch the gutters during a heavy shower. Overflowing water means a blockage or a sag.
- Go into the loft on a bright day. Light coming through means a gap, and dark stains on the timbers mean water.
- Check ceilings upstairs, especially in corners and around the chimney breast.
Take photos of anything you find. It saves time and helps a roofer give you an accurate price.
A Typical Winter Preparation Budget
For a standard semi or terrace in reasonable condition, a sensible autumn package might look like this:
- Inspection with photos: £75 to £150
- Gutter clearing and minor joint repairs: £120 to £300
- Replacing a few slipped slates or tiles: £150 to £400
- Re-dressing or re-pointing lead flashing: £150 to £350
That’s roughly £500 to £1,200, and often less if the roof is in good shape. Roofs that have been ignored for a few years, with valley or chimney work needed, can run to £2,000 to £3,500.
Roof Repairs Carlisle offers autumn inspections across the city and surrounding villages, and we send photos of everything we find so you can decide what needs doing now and what can wait until spring.
Book your Carlisle roof check in early autumn, before the diaries fill up and the first storm does the inspection for you.
Frequently Asked Questions
How Much Does A Roof Inspection Cost In Carlisle?
Most roof inspections cost £75 to £150, including photos of any problems found. Many roofers deduct the fee if you go ahead with repairs. A drone survey may cost a little more but avoids the need for ladders on steep or tall roofs.
When Is The Best Time To Get My Roof Checked Before Winter?
September and October are ideal. The weather is usually still dry enough for repairs, and roofers aren’t yet flat out with emergency call-outs. Leaving it until after the first storm often means a longer wait.
Should I Have Moss Removed From My Roof?
Yes, if it’s thick enough to lift tile edges or block gutters. It should be removed by hand and treated, not pressure washed. Moss removal and treatment usually costs £300 to £700 on an average house.
How Often Should Gutters Be Cleaned?
At least once a year, ideally in late autumn after the leaves have dropped. Homes near trees may need clearing twice a year. Cleaning typically costs £80 to £180.
What Causes Most Winter Roof Leaks?
In our experience, blocked gutters and valleys, failed flashing around chimneys and slipped slates cause most of them. All three are usually cheap to fix if they’re caught early. The cost goes up quickly once water has been getting in for a while.
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