I replaced about 200m^2 of paving late last year. The paving supplier suggested PCT 56 as a sealer. Easy to apply and not stupidly priced. Does what it says on the documents. I would recommend applying to the underside before installation if using concrete blocks.
www.pctwaterrepellent.co.za
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waterproofing water repellent damp rising pct moisture algae fire seal paint booster moisture





