[colin bird]

I'm normally on the window cleaning forum,awhile ago I asked how to clean Indian sandstone patio at my house,I was given lots of advice ,and decided to go down the hypo route,have to say my patio,looks like new.
I diluted at 3 parts water to one party hypo.
In areas where algae was bad would it be beneficial to leave hypo to soak for a while ?

Thanks again

[Roger Oakley]

I'm normally on the window cleaning forum,awhile ago I asked how to clean Indian sandstone patio at my house,I was given lots of advice ,and decided to go down the hypo route,have to say my patio,looks like new.
I diluted at 3 parts water to one party hypo.
In areas where algae was bad would it be beneficial to leave hypo to soak for a while ?

Thanks again

I wouldn't leave it on and walk away No, problem you can have here is people walking in the solution and possibly taking it in to their home, hypo on carpets etc = disaster, so you are best having a longer dwell time BUT clean it all off after that.