SIKA 5LTR No1 WATERPROOFER
A waterproofing additive used in concrete, mortar and rendering. Sika No1 waterproofer contains complex colloidal silicates which swell and block water penetration into pores of the sand, cement, renders or screeds, creating an effective waterproof barrier.
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£59.94 per item
Resist water pressure. Moisture and damp resistant. Can also be used in internal tanking.
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