Waterproofing is not simply brushing coating on walls — it is a rigorous systematic project. Application must follow construction requirements to ensure waterproofing performance. Today let's share the key precautions for waterproofing during renovation.
01 Clean Substrate
During renovation, walls and floors have debris, sand, concrete protrusions and dust. Before waterproofing, these must be cleaned with a scraper. Otherwise the waterproof layer will not bond firmly to the substrate, leading to cracking, peeling and leaks.
02 Repair Substrate
If the substrate has cracks or unevenness, repair with cement mortar or leak-plugging compound before waterproofing. Otherwise water will seep through cracked areas and the waterproofing will fail.
03 Dampen with Water
Before applying waterproofing, dampen the substrate with water. If the wall is dry, it will absorb the coating emulsion directly, upsetting the water-powder balance and causing the waterproof layer to crack, powder or peel.