I have a lot of block paving .... do not use a pressure washer direct, unless you intend to resand the joints.
Buy a rotary attachment for pressure washer ... SUPERB ... does exactly what it says it will do, and does not remove sand.
I have a lot of block paving .... do not use a pressure washer direct, unless you intend to resand the joints.
Buy a rotary attachment for pressure washer ... SUPERB ... does exactly what it says it will do, and does not remove sand.
I use a rotary attachment on my block paving, but , unless I then clear the whole area using the lance at an oblique angle, all I have done is stir up the moss etc, remove it from the joins and faces of the blocks and redistribute it back into the joins.
Having then re-sanded, it looks great for a while, but it is surprising how soon it starts to look green again.
Chris
I thought Pressure Washers also tended to roughen the block surface by eroding the loose aggregate from the block - leaving it more vulnerable to moss growth.
Bit the bullet and got the 259 from Focus for £108. Just two on the shelf so it looks as though there's not a lot available if anyone is thinking of joining the party. There were, though, a couple of cheaper models and one dearer.
They also had 'Carplan Triplewax Jetwash Driveway Cleaner' on BOGOFF at £5.99 for 5l. No doubt someone will be along shortly to tell me it's a waste of money? If so, it'll be going back for a refund.
If they had enough power, which I doubt. Akin to 'will it take the paint off'?
Though there have been warnings about damage to tyre sidewalls.
I to will try that idea in the warmer weather when its been dry for a week! I think a shorter tooth would be better to just remove the top centimetre of crud and level up the joint. Then refill with kiln dried sand. You can buy grout removers with a serated edge which might also work.
Dave
And don't be tempted to try a focused blast on any nicely painted but algae covered wooden fences you may have - it drills right through...
And similar with the 'grout' on your crazy paving...
Good for cleaning upstairs windows though.
And uses surprisingly little water compared with the garden hose.
S
Thats exactly why pressure washers were invented. They developed in Germany & Denmark to clean using less water, cleaning faster was an added bonus.
I never came across it during the 30 odd years I was invilved with HPC's. I reckon its CYA.
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