a few month back i had a concrete base laid in ym garden for a garage that will be delivered next month. Today when I was in my garden i noticed a greenish colour on some of like the colour you get on slabs which have been laid after a while. It's not furry or anything but just a green tinge to it.
Should i just brush over it with soapy water to clear it off and is there anything i can put on top of base to seal it?
Green moss on base
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Tony McC
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- Location: Warrington, People's Republic of South Lancashire
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Get some cheap bleach from Aldi, Netto or Lidl, or one of those bloody pound shops that spring up overnight. Let it down one-to-one with clean water and swill it over the algaefied slab - the bleach will kill the vegetation in 24 hours and leave you with a reasonably clean slab for your garage.
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