Checking gutters and window sills before the autumn rains

How a blocked downpipe looks from the ground

You do not need to climb up to know a gutter is in trouble. Stand back from the house on a rainy day and watch where the water actually goes. If it is running over the front edge of the gutter in a sheet, rather than falling neatly from the downpipe outlet, something upstream is blocked.

Other signs are visible even in dry weather. A dark, streaked stain running down the render or the wooden cladding below a joint usually means water has been overflowing there for a while. Moss or small plants growing out of the gutter itself, visible as a green line along the roof edge, are a sure sign of standing water and rotting leaf debris.

A downpipe that gurgles or drips slowly long after the rain has stopped, instead of running clear and then stopping, usually has a partial blockage lower down, often at the elbow joint near the ground.

What happens if gutters go into winter uncleaned

A gutter full of wet leaves does not just overflow, it also gets heavier. In a hard frost that soaked mass freezes solid, and the ice can pull the gutter bracket away from the fascia board, especially on older wooden houses in areas like Nõmme or Harku where the brackets are original and already brittle.

Water that keeps sheeting down the same stretch of wall all autumn has time to work into render cracks or timber joints before the frost arrives. Once it freezes there, the expansion widens the crack further, and by spring you are looking at flaking render or a soft patch of wood rather than a quick clean.

Overflow near the foundation is the other quiet problem. Water pooling against the base of the wall all winter keeps that section permanently damp, which is exactly the sort of thing that shows up as a damp patch in the basement or crawl space the following spring, long after the cause has been forgotten.

What you can check and clear yourself before the rain

Most of this is straightforward if you have a stable ladder, gloves and calm weather. Choose a dry day, since wet leaves are heavier and the roof edge is more slippery. Never do this alone if the ladder is resting on soft autumn ground.

Work along the whole run rather than just the visible sagging bit, since a clear stretch can hide a blocked outlet further along. Flush each downpipe with a hose afterwards and watch that the water comes out the bottom at roughly the rate it went in at the top.

• Clear leaves and moss out of the gutter by hand or with a small trowel, working towards the nearest downpipe
• Check that gutter brackets are still firmly fixed to the fascia and not pulling away
• Flush each downpipe with a hose and confirm water exits freely at ground level
• Look at where the downpipe discharges — it should lead well away from the foundation, not pool against the wall
• Trim back any branches hanging directly over the roof edge
• If a stretch of gutter holds standing water after flushing, check it for a sag or a low joint

Window sill slope and damp at the window frame

An outdoor window sill should have a visible downward slope away from the glass, so rain runs off rather than sitting on the ledge. On many Soviet-era panel flats and older wooden houses the render or sheet metal covering the sill has settled flat, or even tips slightly back towards the frame, and that is where autumn rain starts finding its way in.

Look for a line of darker, blistered paint or swollen wood along the bottom edge of the frame, or a powdery white residue on the render just under the sill outside. Both point to water sitting against the frame rather than running off it. Inside, a damp smell or a soft patch of plaster below the window in autumn is often traced back to exactly this.

The sealant strip between the sill and the wall is worth a look too. Once it has hardened and cracked, usually visible as a thin grey line pulling away from the render, it stops shedding water and starts collecting it instead.

When it is worth calling someone out for the window itself

A cracked sealant strip or a sill with a poor slope is often a half-hour repair rather than a full window replacement, provided the frame and glass are otherwise sound. This is worth doing before the rain rather than after, since a frame that has already absorbed damp over one winter takes far longer to dry out and repair properly.

If the window itself no longer closes tightly, if you can feel a draught along one edge, or if the hinges have started to sag, that points to a servicing job rather than just a sill repair. Left through a wet, cold winter, that gap tends to let in both water and cold air, and the frame can swell or warp further.

A window fitting and servicing visit, from 90 € per job, covers resealing the sill, adjusting hinges and hardware, and checking the seal around the frame, which is usually enough to see a window through several more winters without replacing it.

How long this takes and why it is worth doing now

For a typical detached house, clearing the gutters and checking the sills takes an afternoon if you already have the ladder and tools to hand, longer if the ladder needs setting up on uneven autumn ground or if a downpipe turns out to be badly blocked lower down.

Where climbing onto the roof edge is not something you want to do yourself, or the house has more than one storey, a gutter cleaning job from 120 € covers the whole run plus a check of the downpipes and their outlets, done with the right harness and tools rather than a borrowed ladder.

Smaller related jobs, such as resealing a sill, refitting a loose bracket or trimming overhanging branches, fit naturally into an hourly odd jobs visit from 39 € per hour, particularly if you are already having something else looked at on the same call-out.