How to test the waterproof degree of the newly painted wall? Is Gao De waterproof and easy to use?

There is no way to test the waterproof of the wall. You can only look at it with your eyes and draw in situ. Ground waterproof can store water 10cm high. Go downstairs in 48 hours to see if there is any water seepage at the top. If not, it is qualified. After passing the test, make mortar protective layer to avoid damage when laying floor tiles in the later period. Henkel's waterproof is basically the best in the market, so it is recommended. The bathroom of a five-star hotel in our company all adopts Henkel waterproof paint.