How much does exterior cleaning cost in Harrow?

Most homes in Harrow should have gutters cleaned at least twice a year, ideally in autumn after leaves fall and in spring. Properties near trees may need quarterly cleaning. Signs you need gutter cleaning include water overflowing during rain, sagging gutters, plants growing from gutters, or damp patches on external walls. Regular cleaning prevents expensive water damage to your property.

Is pressure washing safe for my driveway or patio?

Yes, when done professionally. We adjust water pressure based on your surface type. Block paving, concrete, tarmac, and natural stone all require different pressure settings. Our experienced team knows exactly how to clean each material effectively without causing damage. DIY pressure washing often causes problems because people use too much pressure. We get it right first time.

Will roof cleaning damage my tiles?

No. We use soft washing techniques specifically designed to protect roof tiles while removing moss, algae, and lichen. Unlike high-pressure washing which can crack tiles and force water under them, our method is gentle yet highly effective. We've cleaned thousands of roofs across Harrow without a single tile damaged. Your roof is safe in our hands.

Do I need to be home during the cleaning service?

Not necessarily. For exterior services like gutter cleaning, pressure washing, and window cleaning, you don't need to be present as long as we have access to outdoor taps and the areas being cleaned. We'll take before and after photos and send them with your digital invoice. Many of our regular customers leave us to work while they're out. Our reviews often mention how much they trust us with property access. Just let us know your preference when booking.

What equipment do you use for window cleaning?

We use a pure water fed pole system for most window cleaning jobs. This produces streak-free, spotless results without chemicals. The purified water dries naturally without leaving marks. For interior windows or specific requests, we also use traditional methods with professional-grade squeegees and cleaning solutions. Our equipment reaches up to four storeys high safely from the ground.

How long does roof cleaning take?

A typical residential roof cleaning takes between 4 to 8 hours depending on roof size, pitch, and the level of moss coverage. We work carefully to ensure thorough cleaning without rushing. Most jobs are completed in a single day. We'll give you an accurate timeframe when we quote. The results last for years, making it a worthwhile investment in your property.

Can you clean my gutters if they're very blocked?

Absolutely. Heavily blocked gutters are our specialty. We use industrial vacuum equipment that handles even the worst blockages, including compacted leaves, moss, and debris. We'll also clear downpipes and check the entire gutter system is flowing properly. If we find any damage or issues during cleaning, we'll let you know immediately so you can arrange repairs.

What's the difference between pressure washing and soft washing?

Pressure washing uses high-pressure water to blast away dirt, perfect for hard surfaces like driveways and patios. Soft washing uses lower pressure with specialised cleaning solutions, ideal for delicate surfaces like roofs, render, and painted surfaces. We choose the right method for your specific surface to get excellent results without damage. Sometimes we use both techniques on different areas of the same property.

Do you offer regular maintenance contracts?

Yes. Many of our five star customers book regular window cleaning every 4 to 8 weeks, gutter cleaning twice yearly, or annual pressure washing. Regular maintenance keeps your property looking great and prevents minor issues becoming expensive problems. We offer flexible scheduling and discounted rates for recurring customers. Our Google reviews frequently mention customers who've used us for years. Just ask about setting up a maintenance plan that suits your property and budget.

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Signs Your Gutters Are Blocked — And What To Do About It

Home Blog Signs Your Gutters Are Blocked — And What To Do About It

Blocked gutters usually cause damage before anyone notices there’s a problem. The water has somewhere to go — it just goes somewhere it shouldn’t. Down the walls, into the fascia boards, or around the foundations.

We clear gutters across Harrow, Pinner, Stanmore, Watford, and North West London every week. This article covers the signs to look for, what they mean, and what to do when you spot them.

The Most Common Signs Your Gutters Are Blocked

1. Water Overflowing Over the Sides

This is the most obvious one. If rain water is pouring over the edge of your gutters rather than running down the downpipe, there’s a blockage somewhere in the system.

It might be a build-up of leaves and debris in the gutter trough itself, or it could be the downpipe that’s blocked — causing water to back up even if the gutter looks clear from the outside. Either way, it needs sorting.

2. Damp Patches or Staining on External Walls

If you’re seeing damp or dark staining on your outside walls, particularly below the gutter line, that’s a strong indicator that water has been overflowing for a while.

This kind of damp can eventually work its way through to internal walls if the blockage is left long enough. By the time it shows up inside, it’s been a problem outside for some time.

The HomeOwners Alliance has useful guidance on diagnosing damp in UK homes and what typically causes it.

3. Plants or Moss Growing From the Gutters

If something is growing out of your gutters, it means there’s enough soil and debris in there to support plant life. That’s a significant blockage.

Moss and weeds growing from the gutter trough are a sign the build-up has been sitting there for a while. It won’t clear itself — and the roots can start to damage the gutter material over time.

4. Gutters Sagging or Pulling Away From the Fascia

Gutters are designed to be lightweight. When they’re full of compacted debris and waterlogged leaves, they become heavy — and that weight pulls the brackets away from the fascia board or causes the guttering to sag in the middle.

A sagging gutter won’t drain properly even if there’s no direct blockage, because water pools in the low point rather than flowing to the downpipe. This usually means the gutter needs clearing and the brackets may need re-securing.

5. Staining or Damage on the Fascia Boards

Fascia boards sit directly behind and below the gutters. When gutters overflow consistently, the fascia boards get soaked repeatedly. Over time this causes discolouration, softening, and eventually rot.

If you can see water staining on the fascia, or if the wood looks soft or is starting to peel, the gutters above have probably been overflowing for longer than you might think. Replacing fascia boards is considerably more expensive than clearing a blocked gutter.

6. Water Pooling Near Your Foundations

Gutters and downpipes exist to move rainwater away from the base of your home. When they’re blocked, water cascades off the roof edge and falls close to the walls — exactly where you don’t want it.

Persistent water pooling near the base of external walls can cause issues with foundations and damp-proof courses over time. It’s one of the less visible consequences of blocked gutters and one of the more costly to address.

Damp Control Technical Documents has guidance on how water ingress affects UK properties and what to look for.

7. A Noticeable Smell Near the Gutters

Decomposing leaves and organic matter in a blocked gutter can start to smell, particularly in warm weather. If you notice an unpleasant earthy or musty smell close to the roofline, the gutters are likely holding a significant amount of rotting debris.

It’s not the most dramatic sign, but it’s a reliable one — particularly on properties with heavy tree coverage nearby.

Don’t Forget the Downpipes

Most people assume blocked gutters means debris in the gutter trough. But the downpipe is just as often the problem.

A blocked downpipe means water has nowhere to drain — so even a clear gutter will overflow. Signs the downpipe is blocked include:

Water overflowing from the top of the downpipe joint rather than running down
A gurgling sound from the downpipe during heavy rain
Water pooling at the base of the downpipe rather than draining away
The downpipe feeling full or heavy when tapped

A proper gutter clean should always include flushing the downpipes and confirming flow to the drain. If the company you’re using doesn’t do this as standard, ask why.

What To Do When You Spot These Signs

Don’t Wait

The damage from a blocked gutter gets worse the longer it’s left. If you’ve spotted one or more of the signs above, the right move is to get the gutters cleared as soon as reasonably possible — not to wait until a more convenient time.

Most gutter cleans in Harrow and North West London can be booked and completed within a few days.

What a Professional Clean Covers

A proper gutter clean isn’t just a quick scoop of the obvious blockage. Here’s what it should include:

Full clearance of the gutter trough end to end
Downpipes flushed and flow confirmed to the drain
Before and after photos sent with the invoice
A condition report flagging anything that needs attention — cracked joints, damaged brackets, rotten fascia

Our gutter cleaning service covers all of the above as standard. No partial clears, no skipped downpipes.

Can You Clear Gutters Yourself?

Technically yes, but there are two problems with it. The first is safety — working at height on a ladder is a genuine risk, and a ladder rested against guttering can damage it. The second is thoroughness — DIY gutter clearing usually tackles the visible blockage but misses compacted debris further along the run and rarely deals properly with the downpipes.

For most homeowners, a professional clean once or twice a year is easier, safer, and more effective than trying to do it yourself.

When It’s More Than Just a Blockage

Sometimes clearing the gutters reveals a bigger issue. Things to look out for:

Cracked or split guttering that will need replacing
Loose or missing brackets that are causing the sag
Fascia boards that are soft, rotten, or pulling away
Downpipes that are cracked or have separated at the joints

We flag anything we find during a clean and photograph it. We don’t carry out repairs ourselves, but you’ll have the information and photos to pass on to whoever does.

If moss from the roof is one of the things filling your gutters, it’s also worth looking at our roof cleaning service. Treating the roof and clearing the gutters at the same time makes sense — otherwise the roof moss ends up back in the gutters within months.

The Short Version

Spotted any of these? Book a clean.

Water overflowing during rain
Damp or staining on external walls
Plants or moss growing from the gutter
Gutters sagging or pulling away from the fascia
Fascia boards looking stained or soft
Water pooling near your foundations
A smell near the roofline in warm weather

Any of these means the gutters need attention. More than one means they’ve needed it for a while.

Elite Spotless Solutions covers Harrow, Pinner, Stanmore, Watford, Ruislip, Northwood, and across North West London. Call 07751 890709 for a free quote, or see our gutter cleaning page for more on what the service covers.

Frequently asked questions

Q1: What are the signs your gutters are blocked?

The most obvious signs are water overflowing from the sides of the guttering during rain, damp patches or staining on external walls, plants or moss growing from the gutter trough, gutters visibly sagging, fascia boards looking water-stained or soft, and water pooling near the base of walls. Any one of these is a reason to book a clean. Multiple signs suggest the blockage has been building for a while.

Q2: How can I tell if my downpipe is blocked?

A blocked downpipe usually shows itself as water overflowing from the top of the downpipe joint during rain rather than running down to the drain. You might also hear a gurgling sound from the downpipe, notice water pooling at its base, or find that the overflow is happening even though the gutter trough looks relatively clear. Downpipe blockages need flushing to clear — scooping the gutter won’t fix them.

Q3: Can blocked gutters cause damp inside the house?

Yes, though it usually takes time. When gutters overflow consistently, water runs down the external walls and can eventually find its way through — particularly around windows, at the junction between the wall and floor, or through older brickwork. By the time damp shows up inside, it has often been a problem outside for months. Getting gutters cleared early stops the chain before it gets to that point.

Q4: Why are my gutters overflowing in heavy rain?

Gutters overflow in heavy rain when they can’t drain fast enough — usually because debris is blocking the flow through the trough or down the pipe. It can also happen if the gutter is sagging and water is pooling in a low point rather than running to the downpipe, or if the gutter has inadequate capacity for the roof area it’s serving. The first thing to rule out is a blockage.

Q5: Is it bad if water is overflowing from my gutters?

Yes. Overflowing gutters mean water is going somewhere it shouldn’t — most likely down your external walls. Over time this causes damp, saturated fascia boards, and potentially damage to the wall structure or foundations. It’s one of those problems that gets worse gradually and often goes unnoticed until it’s already caused some damage.

Q6: What causes gutters to sag or pull away from the wall?

The most common cause is weight — when gutters fill up with compacted leaves, moss, and waterlogged debris, they become significantly heavier than they’re designed to be. That weight pulls the brackets away from the fascia or causes the guttering to sag in the middle. A sagging gutter won’t drain properly even if it’s not directly blocked, because water sits in the low point rather than flowing to the downpipe.

Q7: Can moss growing in gutters cause damage?

Yes. Moss and weeds growing from the gutter trough indicate significant debris build-up. The root systems from this growth can start to damage the gutter material itself and force joints apart over time. The organic matter also retains moisture against the gutter, which accelerates deterioration. If something is growing out of your gutters, they need clearing promptly.

Q8: How quickly should I get gutters cleared after spotting a blockage?

As soon as reasonably possible. The damage from a blocked gutter — damp walls, rotten fascia, foundation water — gets worse the longer it’s left. Most professional gutter cleans in Harrow and North West London can be booked and completed within a few days of calling. Waiting until it’s more convenient usually means waiting until more damage has occurred.

Q9: Do I need to be home for a gutter clean?

No. We need safe access to the exterior of your property and an outdoor tap, but you don’t need to be present. We photograph the gutters before and after the clean and send both sets to you with your invoice. Most of our customers across Harrow and North West London are out when we visit. Confirm access arrangements when you book.

Q10: Will a blocked gutter affect my home insurance?

It could complicate a claim if water damage is traced back to gutters that clearly hadn’t been maintained. Most home insurance policies include a general requirement to keep the property in reasonable condition. Having a record of regular professional gutter cleans — including the photos we provide after every job — is a practical way to demonstrate that maintenance was being carried out.

Q11: How much does it cost to get blocked gutters cleared in Harrow?

The price depends on the size of your property and the length of guttering. We give a fixed quote before starting — no call-out fee and no additions on the day. Call 07751 890709 for a free, no-obligation quote based on your specific property in Harrow or the surrounding area.

Q12: Can blocked gutters damage foundations?

Over time, yes. When gutters overflow, water falls close to the base of external walls rather than being directed away from the building. Persistent water pooling near foundations can affect damp-proof courses and cause issues with the ground immediately around the base of the property. It’s not an instant problem but it’s a real long-term risk from consistently blocked gutters.