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.

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.

Our Service Areas

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Block Paving vs Tarmac : Which Driveway Is Easier To Clean?

Q: 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.

Home Blog Block Paving vs Tarmac : Which Driveway Is Easier To Clean?

People ask us all the time which driveway is easier to clean. Block paving or tarmac? The honest answer is that it depends what you mean by easier. One is quicker. The other is more forgiving.

We clean block paving and tarmac driveways across Harrow, Pinner, Stanmore and North West London every week. This guide covers how each surface behaves, what can go wrong, and what to ask a cleaner before you book.

The Short Answer

Tarmac: quicker to clean, but soft and easy to damage if it’s handled roughly
Block paving: takes longer because of the joints, but it copes well with a proper clean
Both: the method matters more than the surface

Cleaning Block Paving

Block paving is made of individual blocks with sand in the gaps between them. That’s what makes it harder work. Dirt, moss and weeds collect in the joints, and the joints are where a clean can go wrong.

What Makes It Harder

Moss and weeds grow in the joints
A hard jet can blast the jointing sand out
Loose sand can mean blocks start to shift
It often needs the joints topping up afterwards

Bradstone explains that jointing sand can wear away through weather and cleaning, and that high pressure jets can dislodge it. They suggest re sanding after cleaning, especially if pressure washing was used.

We cover this in more detail in is pressure washing bad for block paving.

Cleaning Tarmac

Tarmac has no joints, so there’s less to go wrong day to day. But it’s softer than it looks. It’s stone held together by a flexible bitumen binder, and the surface is porous, so it holds water and gives moss something to grip.

What Makes It Tricky

A hard jet can strip the surface and make it crumble
Moss can’t be forced off, it needs treating
Solvent based cleaners and degreasers can dissolve the binder
Shaded areas go green quickly

Everest Paints says the safe approach is to brush off thick moss when dry, treat what’s left, then use a gentle, wide fan rinse.

Block Paving vs Tarmac: Side by Side

Effort

Tarmac is usually quicker, because there are no joints to work around. Block paving takes longer.

Risk of Damage

Both can be damaged by the wrong method. On tarmac the risk is a stripped surface. On block paving it’s blasted joints and loose blocks.

Moss and Weeds

Tarmac gets moss and algae on the surface. Block paving gets moss on the blocks and weeds in the joints.

Aftercare

Block paving often needs the joints checked and topped up with sand. Tarmac may benefit from a moss treatment to slow regrowth.

So Which Is Easier to Clean?

If you want the quicker job, it’s tarmac. If you want the surface that handles a thorough clean best, it’s block paving, provided the joints are looked after.

The bigger point is that neither surface is hard to clean when it’s done properly. Both are easy to get wrong.

If you want to see how we approach a driveway, take a look at our driveway cleaning service.

What to Ask a Cleaner Before You Book

What equipment and pressure will you use on my surface?
Is the price fixed?
Are moss treatment and weeds included?
Is re sanding included for block paving?
Are you fully insured?
Will I get before and after photos?

A cleaner who uses the same method on every surface is a red flag.

The Bottom Line

Tarmac is quicker to clean. Block paving is more forgiving of a proper clean. What decides the result is the method, not the surface.

Elite Spotless Solutions cleans both across Harrow, Pinner, Stanmore, Ruislip, Northwood, Watford and North West London. See our pressure washing service. Call 07751 890709 for a free, no obligation quote.

Frequently asked questions

Q1: Is block paving or tarmac easier to clean?

Neither is simply easier. Tarmac has no joints, so day to day upkeep is quicker, but it is soft and easily damaged, so it needs a gentle, careful clean. Block paving takes longer because of the joints, but it copes well with a proper clean as long as the jointing sand is checked afterwards. The easier surface is the one cleaned by someone who knows how to treat it.

Q2: Can I pressure wash my tarmac driveway?

Only very carefully. Tarmac is aggregate held together by a flexible bitumen binder, and Everest Paints warns that a hard jet can strip the surface layer and make the driveway crumble. A wide fan nozzle held back from the surface is the safe approach, and moss is better killed with a treatment than forced off with pressure.

Q3: How do I get moss off my tarmac driveway?

Brush off thick clumps on a dry day, then apply a moss treatment suited to tarmac and let it work. Moss can’t be forced off tarmac, and the treated growth usually fades and washes away over the following weeks. A gentle rinse can follow once it has browned or whitened. Avoid solvent based products, which can dissolve the binder.

Q4: Why does my block paving look worse after I jet washed it?

Jet washing can lift the jointing sand out of the gaps between the pavers. Bradstone notes that high pressure jets can dislodge jointing sand and recommends re sanding after cleaning, especially if pressure washing was used. Without sand, joints let weeds back in and the blocks can shift.

Q5: Does block paving need re sanding after it has been cleaned?

Often, yes. Jointing sand can wear away through weather and cleaning. Bradstone suggests re sanding when you see visible gaps, loose or wobbly pavers, more weeds in the joints, or after a clean, especially one using pressure washing. Ask whether re sanding is included in your quote.

Q6: Which driveway surface stays cleaner for longer, block paving or tarmac?

It depends on the setting. Tarmac is porous and holds water, which gives moss spores something to grip, so shaded tarmac can go green quickly. Block paving can also grow moss and weeds in the joints, particularly in damp, shaded spots. Neither stays clean without some upkeep.

Q7: Is it worth paying a professional to clean my driveway?

For most people, yes. The risk with both surfaces is damage from the wrong method, such as stripped tarmac or blasted joints. A professional uses the right equipment and pressure for the surface, and mistakes can cost more to fix than the clean. Look for a fixed quote, confirmed insurance and before and after photos.

Q8: I have a tarmac driveway in Harrow. Can Elite Spotless clean it?

Yes. We clean both tarmac and block paving driveways across Harrow, Pinner, Stanmore and North West London. We use a gentler approach on tarmac than on block paving, because the surface is softer. Call 07751 890709 for a free, no obligation quote.

Q9: What should I ask a cleaner before they work on my block paving or tarmac?

Ask what equipment and pressure they will use on your surface, and whether the price is fixed. Ask whether weeds, moss treatment and re sanding are included, whether they are insured, and whether you will get before and after photos. A cleaner who uses the same method on every surface is a red flag.

Q10: Will cleaning make my tarmac driveway crumble?

A gentle clean won’t. Damage happens when too much pressure or the wrong chemicals are used. Everest Paints warns that solvent based cleaners and degreasers can dissolve the binder and that harsh jets can strip the surface. A wide fan tip, kept at a distance, with a suitable moss treatment, is the safer route.

Q11: How often should I clean a block paving or tarmac driveway?

There is no fixed interval. Most driveways benefit from a clean when moss, algae or weeds become visible, which is often once a year or every couple of years in damp or shaded spots. Check block paving joints regularly and top up the sand when gaps appear.

Q12: Where can I get a driveway cleaning quote near me in North West London?

Call 07751 890709 for a free, no obligation quote. We cover Harrow, Pinner, Stanmore, Ruislip, Northwood, Watford, Bushey and the surrounding areas. We give a fixed price before work starts, with no call out fee and no additions on the day.