There are many advantages of water-resistant putty, but in terms of its standards, putty products that meet the water-resistant standard alone have some shortcomings and shortcomings.
1. Construction and polishing are more laborious. Because the water-resistant putty is firmer, the product is more gelatinous, and it is more difficult to mix and scrape than non-water-resistant putty. The water-resistant putty is also stronger than the non-water-resistant putty, and it will be more laborious when grinding.
2. The product is alkaline before the wall is dry. Water-resistant putty should use ash calcium (mainly CaO, quicklime) to increase its strength by a series of complex reactions of water and carbon dioxide, which will produce a certain alkaline calcium hydroxide, and this alkalinity generally lasts. It will disappear in 5-7 days. If the alkalinity is not well controlled, the builder will have a burning sensation, and at the same time, the color paste of the surface latex paint will be decomposed, resulting in uneven color.
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