One、Do waterproof coatings need to be added with cement?
When applying waterproof materials, do not add cement.
Regardless of the type of coating used, adding cement can easily lead to cracking in the resulting waterproof material. As cement dries and hardens, it shrinks, and when added to waterproof coatings, it can cause cracking, which negatively impacts the waterproofing effectiveness.
Two. How to use cement-based waterproof coatings
1. First, prepare the substrate by ensuring it is level and clean, and then mix the cement-based waterproof coating.
2. Secondly, treat the corners, drain openings, and other joint areas first, then apply the waterproofing layer. When applying the waterproofing layer, apply multiple coats to allow it to dry naturally.
3. Finally, sprinkle a suitable amount of sand on the waterproof layer to create a protective effect.
Three. important considerations when applying cement-based waterproof coatings:
1、Before construction, the substrate must be prepared, ensuring it is clean and smooth. If the substrate has irregularities, gaps, or other issues, it should be repaired with cement mortar. When working with corners, use a trowel to create a semicircular shape, ensuring the substrate is fully wetted and preventing the formation of standing water. If the substrate has water leakage issues, it should also be addressed.
2. Before application, ensure the waterproofing coating is thoroughly mixed. This will prevent uneven application during the process. When mixing, avoid adding any other materials, liquids, or water, as this can affect the performance of the waterproofing coating. Additionally, intermittent mixing during application will prevent layering and settling.
3. When applying waterproof coating, the application should be even and in the correct order, with no overspraying or missed areas.
4. After the waterproofing coating is applied, certain protective measures should be taken to prevent the coating from being eroded by rain or exposed to direct sunlight, which could affect the waterproofing performance.