Patio or terrace
Best for: The area you actually sit in
The main paved area washed and rinsed, joints checked, furniture moved and put back.
London stonework goes green and then black, and the temptation is to attack it with the highest pressure available. On York stone, old brick, render and painted masonry that takes the surface off with the dirt. We wash exterior surfaces at the pressure the surface can actually take, which is slower and looks a great deal better a year later.
Hard stone takes a lot. Soft York stone, lime mortar and render take very little, and once the face is blown off a slab there is no putting it back. We test a corner, settle on the lowest pressure that actually works, and use a flat surface cleaner rather than a lance where the surface is delicate.

Algae needs damp and shade, which is most of a London garden between October and April. Once it takes hold it holds water against the stone, and in a hard frost that is what lifts the surface.
Algae on a wet step is genuinely slippery. Front steps and basement stairs are the ones worth keeping on top of.
Blasting sand out of block paving joints is how paving starts to move. Where joints need re-sanding afterwards we will tell you.
A yearly wash keeps on top of it. Leaving it three years means a much harder clean on a surface that has had three winters of damage.
We find out what the surface is and what it will tolerate before we do the whole thing, somewhere you will not be looking.
Dirt lifted evenly across the whole area rather than in stripes, then rinsed off so it does not dry back into the joints.
Drains cleared of what we have washed into them, plants rinsed off, furniture put back where it was.
Most people want the middle one, some only need the first, and we will tell you straight if the biggest option is more than your property actually calls for.
Best for: The area you actually sit in
The main paved area washed and rinsed, joints checked, furniture moved and put back.
Best for: First impressions, and safety
Path, steps, threshold and any basement stair. The quickest job on this list to make a visible difference.
Best for: Before a sale, or after building work
Paving, walls, render and bin store together, so the outside of the property matches rather than one clean patch next to a dirty one.
Priced by area and by what the surface is, because soft stone takes longer than concrete. You get a price before we start and we will tell you honestly if a surface is not going to come up as well as you are hoping.
A family firm on a regular round through Hampstead, Highgate and the areas around them. If your street is nearby but not listed, just ask.
Tell us about the property and we'll give you a price. No call centre, no pressure, just a straightforward quote.
Free quote · No obligation · Regular rounds or a one-off visit.