[edward coller]

hi, im aCC with T/M and porty....about to sell my house, its got a large patio with brick pavers that are looking rough  and old. ive powerwashed in the past and then resanded./sealed..but its mucky and takes time. Is there a product you can recommened that i can spray and go, or spray, hardbrush and go? Ive removed all grot from joints so its the  face of pavers thats the problem. there around 15yrs old. thanks in advance for your help.

[Mike Halliday]

Sodium  hypochlorite (SH) is commonly used by pressure washing companies, cost about £20 for 20lts. mix it  at  1 SH to 4 parts water.

It has an amazing cleaning effect.

[edward coller]

thanks

[John Kelly]

Growth just comes back after Hypo. Use this. https://www.restormate.co.uk/epages/15094.sf/en_GB/?ObjectID=56906964

[Mike Halliday]

Growth just comes back after Hypo. Use this. https://www.restormate.co.uk/epages/15094.sf/en_GB/?ObjectID=56906964

That works on green growth, doesn’t have the power to remove black lichen spots, might kill it and hopefully it will eventually go away.

Hypo works within minutes and has a residual effect but not the long term effect of quats.

They are 2 different chemicals each having different benefits you can’t compare them.

[wayne zabel]

How long should the hypo be left on the pavers for before power washing off?
Just my own pavers - not taking this up professionally

[Mike Halliday]

You can just leave it on, or have a cup of tea then check it after 20mins if it’s done it’s job the rinse it off.

I did a drive yesterday, put it on then cleaned the patio, by the time I’ve finished the drive was clean and it had dried