Every autumn we get called out to gutters that have gone from "a few leaves" to "water running down the wall" in the space of a fortnight. Here's how to stay ahead of it.
Why do West Sussex gutters block so quickly once autumn sets in?
Pulborough, Billingshurst, Storrington and Petworth all sit among mature oak, beech and sycamore cover — exactly the trees that drop the heaviest leaf volume between September and November. On their own, dry leaves would mostly blow through. Mixed with the first proper rain, they mat down into a dense, sodden layer that sits in the gutter channel rather than washing through to the downpipe.
That mat then catches the next round of leaves, twigs and moss, and the blockage builds faster than most homeowners expect — often within two or three weeks of the leaf drop starting in earnest.
What actually happens if you leave a blocked gutter over winter?
A blocked gutter doesn't just look untidy. Once it can't drain, rainwater has to go somewhere else:
- Overflow down the wall face — water spilling over the front edge tracks down brickwork or render, leading to damp patches and green staining.
- Standing water and freeze damage — a full gutter holds weight it wasn't designed for, and if it freezes, the ice can crack uPVC sections or pull brackets away from the fascia.
- Water behind the fascia — persistent overflow can find its way behind the fascia board rather than off the roof, which is where timber rot starts. This is the point where a simple gutter clear turns into guttering, soffits and fascia repair.
When's the best time to clear gutters in West Sussex?
Clearing too early means you're back up the ladder in three weeks once the rest of the leaves come down. Clearing too late means you're doing it in driving rain with cold, waterlogged debris. For most properties in the Pulborough area, the practical window sits from mid-October — once the bulk of the leaf drop is done — through to mid-November, ideally before the settled autumn weather breaks into sustained rain.
A second, lighter check in spring catches blossom, seed pods and anything blown in over winter, but it's the autumn clear that matters most for preventing water damage.
DIY-safe or call a professional?
| Situation | Likely fine to DIY | Call a professional |
|---|---|---|
| Single-storey, gutter visible from ground, dry conditions | Yes — stable ladder, someone footing it | — |
| Two-storey or steep-pitched roof | Only if access is straightforward and level | Recommended |
| Gutter sagging or brackets visibly pulling away | — | Recommended — it's a fixing fault, not just a blockage |
| Overhead power or telephone lines near the roofline | — | Always |
| Water still not draining after clearing debris | — | Recommended — likely a fall or joint problem |
Can you clear your own gutters safely?
If your situation falls on the DIY side of that table, HSE guidance under the Work at Height Regulations 2005 treats ladder use as acceptable for low-risk, short-duration tasks — as a general guide, no more than 30 minutes at a time on a leaning ladder before taking a break. Keep three points of contact, use a proper ladder stand-off rather than resting the ladder against the gutter itself (uPVC isn't designed to take that load), and never work alone on a second-storey property.
What you'll need
- A stable ladder tall enough to reach the gutter with three rungs to spare — not a stepladder stretched sideways
- A bucket or bag clipped to the ladder or a rung, so you're not carrying debris down each trip
- Gloves — wet leaf mulch hides sharp roof fixings and the occasional bit of broken guttering
- A small trowel or gutter scoop for compacted debris
- A garden hose with a spray nozzle to flush the run once it's cleared
- A second person to foot the ladder and pass tools up
How do you clear your own gutters, step by step?
If your property falls on the DIY side of the table above, this is the order that keeps it quick and avoids missing the actual cause of a blockage.
- Position the ladder correctly. Set it at roughly a 75° angle — for every four units of height, the base sits one unit out from the wall — on firm, level ground, with a stand-off if you have one so the ladder never rests against the gutter itself.
- Scoop out loose debris first. Work along the run removing leaves and larger material by hand or with a scoop, working towards the downpipe rather than away from it, so you're not pushing debris further into a blockage.
- Check the downpipe outlet. Before flushing anything, confirm the outlet into the downpipe isn't itself blocked — this is the single most commonly missed step.
- Flush the run with a hose. Starting from the far end, run water along the gutter and watch it exit cleanly at the downpipe. Slow or backed-up flow means the blockage isn't fully clear.
- Check brackets and joints while you're up there. Look for sagging sections, gaps at joints, or brackets pulling away from the fascia — small fixing problems are far cheaper to catch now than after a winter of standing water.
- Move the ladder rather than overreach. Reposition every 1–1.5m instead of stretching sideways — overreaching is the most common cause of falls during gutter work.
Why does the downpipe matter as much as the gutter itself?
A clear gutter with a blocked downpipe still overflows — the water just backs up before it ever leaves the gutter. Downpipe blockages are usually caused by moss washed down from the roof, birds' nests at the hopper, or a build-up of grit and roof granules lower down the pipe, and they're easy to miss because the gutter itself can look empty.
If water pools at one point along the gutter rather than draining evenly, or you can hear water but not see it flowing at the base of the downpipe, that's usually a downpipe blockage rather than a gutter one — and it needs clearing separately.
Do gutter guards stop leaves for good?
Mesh and brush guards reduce the volume of leaves and larger debris entering the gutter, and they can meaningfully cut how often you need to clear it. They don't eliminate the need to check — fine debris like pollen, moss spores and grit still gets through and builds up underneath the guard over time, sometimes hidden from view. A guarded gutter still needs an annual inspection; it just needs clearing less often.
| Guard type | Best for | Limitation |
|---|---|---|
| Mesh | Fine debris and most tree types | Can sag under a heavy leaf load if the frame isn't well supported |
| Brush | Quick to fit, works on most gutter profiles | Debris can settle and compact around the bristles over time |
| Foam / sponge | Pine needles and very fine debris | Can hold moisture against the gutter and needs periodic replacement |
What does professional gutter clearance cost?
Cost mainly comes down to four things: the number of storeys, the total length of guttering, how easy the property is to access, and how compacted the debris is — a routine annual clear is a different job from a gutter that hasn't been touched in several years.
As a general rule, a straightforward single-storey clear sits at the lower end of the market, while multi-storey or hard-to-access properties cost more because they take longer and sometimes need extra access equipment. Ask for a fixed price rather than an hourly rate, and confirm whether checking brackets, joints and downpipes is included — some quotes cover leaf clearance only.
Signs your gutters need attention now
- Visible plant growth or moss sitting in the gutter run
- Staining or a green tide-mark on the wall below the gutter
- Water spilling over the front edge during rain instead of reaching the downpipe
- Sagging sections, or gutter pulling away from the fascia
- Dripping or overflow noise near a window during rainfall
Frequently Asked Questions
How do I know if my gutters are blocked?
The clearest sign is water overflowing the front edge of the gutter during rain rather than draining through the downpipe. Staining or a green tide-mark on the wall below, sagging sections, and visible plant growth in the channel are also strong indicators.
How often should gutters be cleared in autumn?
Once a year in autumn is the minimum for most properties, timed for mid-October to mid-November once the bulk of the leaf drop has finished. Properties under mature trees, or with a history of blockages, often need a second check earlier in the season.
Is it safe to clear my own gutters?
For a single-storey property with easy, level ladder access, it can be — following HSE guidance on short-duration ladder use. For two-storey properties, steep roofs, or anywhere near overhead power lines, it's safer and usually more cost-effective to call a professional.
Do gutter guards mean I never need to clear my gutters again?
No. Guards reduce how often you need to clear the gutter by keeping out larger debris, but fine material still gets through over time and the guard itself needs periodic inspection. Think of it as reduced maintenance, not zero maintenance.
What's the risk of leaving blocked gutters over winter?
Standing water can freeze and crack guttering or pull brackets from the fascia, while overflow running down the wall face causes damp and staining. Left long enough, water can track behind the fascia board and start timber rot, turning a simple clear-out into a repair job.
What tools do I need to clear gutters myself?
A stable, correctly sized ladder, gloves, a bucket or bag for debris, a small trowel or gutter scoop for compacted material, and a hose to flush the run once it's clear. A second person to foot the ladder is strongly recommended.
How much does professional gutter clearance cost?
It depends on the number of storeys, the length of guttering, access difficulty and how compacted the debris is. Ask for a fixed price rather than an hourly rate, and confirm whether checking brackets, joints and downpipes is included.