we have a 7mtr x 2.5mtr basement wall that needs waterproofing. we have been advised to use Cemix Chrystalproof Penatron to do this. Successful experience in using this product is required, or someone who is very good at following the DIY instructions which require the surface to be wet and the sealant to be thickly coated ie 2-3 coats whilst re wetting the surface regularly.
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