How is the hotel kitchen waterproof?

Firstly, the expansion joint is opened into a V-shaped groove with the approximate length of 10- 15CM, and both ends of the inclined plane are roughened.

Clean up the gravel and dust in the expansion joint, because cement has three non-stick laws: dry non-stick, dust non-stick and slippery non-stick.

Then fill the V-shaped groove with cement.

After drying, you can choose Huili 9 1 1 waterproof coating.