Driveway Cleaning & Sealing by Hertsmere Driveways

Welwyn Garden City

Driveway Cleaning & Sealing in Welwyn Garden City

A pre-treat, a rotary clean, fresh joint sand and a seal, on a surface worth keeping. Free survey, a fixed written price, and you only pay when you're happy with the work.

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Driveway Cleaning & Sealing in Welwyn Garden City, explained

The first useful thing we can do is tell you not to bother. On a sound surface a proper clean is one of the best-value jobs in this trade and the colour underneath is nearly always still there. On a surface that has actually failed, washing it only makes the fault easier to photograph, and we would rather quote you for the repair than take the cleaning money.

Assuming it is worth doing, the price comes in three parts and we show them separately so you can stop at any of them. The clean itself. The re-sanding that block paving needs afterwards.

And the sealing, which is optional, is a separate visit, and is the part people most often decide against once they know what it does and does not do. We are based in Hatfield and this area is part of our normal round. The visit and the written price are free, there is no deposit, and nothing is payable until the work is finished.

We cover the AL7 and AL8 postcodes in Welwyn Garden City, and the rest of Hertfordshire.

What your quote covers

An honest look first, and a straight answer on whether a clean will actually fix it
One fixed price in writing, no deposit, nothing payable up front
A pre-treatment on heavy moss and algae so it dies rather than just moves
A rotary flat-surface clean across the whole area, not a striped hand-lance job
Block paving joints refilled afterwards, because a clean empties them and an empty joint lets blocks shift
Sealing as a return visit once the surface is properly dry, where you are having it sealed

Choosing driveway cleaning & sealing in Welwyn Garden City

Cleaning block paving has a side effect that is easy to overlook until afterwards: it takes the joint sand out along with the dirt. That sand is not decorative. It is what locks the blocks against each other and keeps weeds from rooting between them.

A drive left with empty joints after a wash looks clean and is in a worse structural position than it was beforehand. The blocks have room to move, and the first wind-blown seed has somewhere to land. That is why re-sanding is part of our job rather than an optional extra.

Worth saying too that cleaning only suits a surface that is still sound. If blocks in Welwyn Garden City have sunk, edges have spread or the tarmac is breaking up, washing it will show the problem more clearly but will not address it, and we would rather tell you that than take the cleaning money.

Thinking about driveway cleaning & sealing in Welwyn Garden City?

Get a Free Quote 01707 581243

A block paved driveway laid by Hertsmere Driveways

From first visit to finished job

Step 1
Quick Look
We assess the surface and tell you honestly whether a clean and seal will do the job.
Step 2
Written Quotation
A fixed written price, agreed before we start.
Step 3
Deep Clean
The drive is jet washed, and moss, weeds and staining are cleared off.
Step 4
Re-Sand
Block paving joints are refilled with kiln-dried sand so the surface locks up.
Step 5
Seal
Once dry, we seal the surface to protect it, and you settle up when you are happy.

A resin bound driveway laid by Hertsmere Driveways

What happens on site in Welwyn Garden City

Heavy moss and algae are pre-treated so they die back rather than simply being blasted off the surface. Growth removed while still alive regrows from the roots, which is why some drives go green again within a season.

The clean uses a rotary flat-surface cleaner, which gives a far more even result than a hand lance and avoids the striping that comes from working in overlapping arcs. It also keeps the spray contained rather than throwing dirt up the walls.

Then every joint is refilled with fresh kiln-dried sand and worked in. If you are also having the drive sealed, that waits until the surface is properly dry, so it is normally a return visit, applied evenly and left to cure before use.

What affects the price in Welwyn Garden City

We do not publish a rate per square metre, because the number would be wrong for most properties. The survey is free and the price you get afterwards is fixed and in writing. These are the things that move it:

The area being cleaned, and how much of it is intricate or awkward to get a rotary head across
How much moss, algae and weed has built up, and whether it needs pre-treating
The surface type, since block paving carries the re-sanding and concrete does not
Whether you are having it sealed, and which sealer suits the surface
Any repairs the surface needs first, which we would quote separately
Access to water and power, and where the run-off can safely go

Looking after driveway cleaning & sealing

Sealing typically needs redoing every three to five years, and sooner on a drive that sees plenty of sun and traffic. Watch the tyre lines, since wear appears there before anywhere else.

Between times, brush the leaves off and keep the gullies and channels clear. Treat any green growth early with a proper biocide instead of letting it take hold.

Avoid strong household chemicals and neat bleach on paving entirely. They bleach unevenly and leave marks that are much harder to deal with than the algae.

Ready to book a free survey in Welwyn Garden City?

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A finished driveway laid by Hertsmere Driveways

Around Welwyn Garden City

As well as Welwyn Garden City itself, we take on driveway cleaning & sealing work in Welwyn, Tewin, Essendon, Ayot St Lawrence and Marshall's Heath, and across the rest of Hertfordshire. If you are just outside the towns listed here it is still worth a call, because we cover more ground than any list of names can sensibly show.

Driveway Cleaning & Sealing in Welwyn Garden City: Common Questions

Do you cover Welwyn Garden City?

Yes, AL7 and AL8 are both in our area and the Hatfield yard is close by. There is no charge for the survey or the quote.

Why does the sand need replacing?

Cleaning washes the joint sand out with the dirt. Without it the blocks can move and weeds root in the gaps, so we refill every joint with fresh kiln-dried sand as part of the job.