Driveway discouloration - Driveway discouloration

[lutonlagerlout]

it would hardly be worth the trip roger ,only 25 metres.i am a bit peeved as i installed it with the correct 1:60 fall and gave it a good coat of lithofin stain stop
mind you it has been a wet winter. and the patio never gets any direct sunlight, even at the height of summer (the way i like it)
cheers LLL

[RAPressureWashing]

Roger: why not household bleach for algae? It's always worked for me, with no visible problems or undesirable aftereffects

Hello Tony,
Couple of reasons, too expensive, and can be too thick, have seen people use it straight from the bottle, (the types that you squeeze) and end up writing there name or various pattens in the dirt etc. Most household bleach is 6%. The stuff I use once I have mixed it down & added a wetting agent etc, stays fluid so is easy to spray onto the surface therefore giving you better coverage. From mixing down 10lts of Sodium Hypochlorite to the strenght I need/want I can cover 100+ sq mts with the pumping set-up I use. This is just my view, but it works for me.
PS
Did a job at the weekend, 265 sq mts of block and concrete slabs, used a total of 20 lts of Sodium Hypochlorite, so cost effective for me. I'll upload some photos later.

[RAPressureWashing]

it would hardly be worth the trip roger ,only 25 metres.i am a bit peeved as i installed it with the correct 1:60 fall and gave it a good coat of lithofin stain stop
mind you it has been a wet winter. and the patio never gets any direct sunlight, even at the height of summer (the way i like it)
cheers LLL

LLL, if you want to email me, so that I have your email address I'll send you over a cleaning mix ratio etc.

[RAPressureWashing]

Strat07,
If it's any use to you I have got 3 contacts for the Newcastle area that might be able to help. Just let me know.

[Tony McC]

In a piece I uploaded to the main website last year, I recommend using "household bleach", but to use the cheapest 4p per hectalitre jollop from Aldi/Lidl/Netto and not the expensive gloopy stuff, so it seems we're on the same lines.

I think I might add summat to that page to emphasise this information.

[RAPressureWashing]

In a piece I uploaded to the main website last year, I recommend using "household bleach", but to use the cheapest 4p per hectalitre jollop from Aldi/Lidl/Netto and not the expensive gloopy stuff, so it seems we're on the same lines.

I think I might add summat to that page to emphasise this information.

Tony, agree with you on the gloopy stuff not really needed, and the 4 per cent stuff is most proberbly best for the diyer, they shouldn't hurt themselves to much with that sort of strenght, as I'm sure you know it will burn your skin etc if not careful. The other thing with using hypo is not to let it dry-out on the surface, so if you are using on a really hot day etc, keep the area you are working in damp either by re-spraying/wetting with a hypo mix or mist with water. For most algae a 10 min dwell time then pressure wash off is usually enough to rid the surface of the algae, but might need a second application with a weaker (4%) hypo/bleach.

[strat07]

Strat07,
If it's any use to you I have got 3 contacts for the Newcastle area that might be able to help. Just let me know.

That would be great if you could supply some contacts, and thanks for all your help. strat07

[RAPressureWashing]

Strat07,
If it's any use to you I have got 3 contacts for the Newcastle area that might be able to help. Just let me know.

That would be great if you could supply some contacts, and thanks for all your help. strat07

Could you pm me your email address as it is a speadsheet that I can send you, I don't know these companies personally, I got them from the Resiblock contractors list for your area, so they should be able to undertake a job or at least have a look at the paving and give advice.

[RAPressureWashing]

Strat07,
If it's any use to you I have got 3 contacts for the Newcastle area that might be able to help. Just let me know.

That would be great if you could supply some contacts, and thanks for all your help. strat07

Email sent to you strat07