Autumn Property Maintenance: The Jobs That Prevent Winter Damage

Priority one: clear the gutters, after leaf fall

Timing matters as much as the job. Clearing gutters in September, before the trees have finished, means doing it twice. Wait until most leaves are down — typically early to mid-November in southern England — and do it once, properly, including downpipes and a flush test.

This is the highest-value single job of the year. A gutter that overflows all winter saturates the wall below through the wettest months, and the resulting damp, rotten fascia and internal staining cost far more than the clear would have.

Priority two: check valleys and flashings

Valleys full of leaf litter and moss will back up in the first heavy rain and push water sideways under the tiles. They need to be clear before winter, not after the first leak.

Lead flashings around chimneys and where extensions meet walls should be checked for lifting or splitting. Water getting behind a flashing in November has all winter to work, and freeze-thaw will widen every gap it finds.

• Clear valleys, hips and behind chimney stacks
• Check lead flashing is dressed down and pointed
• Look for cracked mortar at ridge and verge
• Check the chimney stack pointing and pot bedding

Priority three: deal with heavy roof moss

Moss is at its most active and most water-retentive through a wet British winter. A roof carrying thick moss going into December will shed continuously into just-cleared gutters, hold water against tiles through every frost, and add real weight when saturated.

Autumn is a perfectly good time for manual moss removal. Biocide application prefers milder, dry conditions, so if the weather has already turned, scrape now and book the treatment for spring — that sequence works well and spreads the cost.

Priority four: ground level and drainage

Check that downpipes discharge into gullies and that those gullies are not blocked with silt and leaves. A perfectly clean gutter emptying into a blocked gully still floods the base of the wall.

Clear leaves from patios and paths — wet leaf litter is both a slip hazard and the origin of the tannin staining that appears in spring. Move garden furniture off timber decking, and check that airbricks are not covered by soil, leaves or raised planting.

• Clear gullies and drain grates
• Confirm downpipes discharge correctly
• Sweep leaves off patios, paths and decking
• Check airbricks are clear and unobstructed

What it costs to do properly

A typical autumn package for a three-bed semi — gutter clear with downpipe flush, valley clearance and a condition check — generally sits in the £120 to £250 range. Adding moss removal makes it a bigger job, priced on the roof rather than as an add-on.

Set against the cost of remedying winter water ingress, which routinely runs into four figures once internal redecoration is counted, autumn maintenance is one of the better-value spends in home ownership. It is also the cheapest way of finding out that your roof is fine.

The bottom line

If time or budget only stretches to one job this autumn, clear the gutters. It is inexpensive, it takes an hour or two, and it prevents the single most common cause of winter water damage in British homes. Everything else on this list is genuinely worthwhile, but nothing else offers the same protection for the same money.

Book earlier than feels necessary. Availability in this trade tightens sharply from late October, and by the time the first heavy storms arrive most competent local contractors are working to a waiting list. A job arranged in September for a mid-November slot gets done at the right time by the right people, rather than in January by whoever can come out.

Finally, keep a note of what was done and when. A short record of the autumn visit, with the contractor's photographs attached, is genuinely useful evidence of maintenance if you ever need to make an insurance claim for water ingress — insurers do ask, and 'we clear them every year' carries much more weight with a date and a picture attached.

Frequently asked questions