Recently, a netizen asked that new house had just been renovated, had been lived in for over three months, and there were mold spots on many of walls, especially on walls near bathroom. Why? The editor is here to tell you that if such a problem occurs, it is because bathroom is poorly waterproofed. You must be optimistic about these points for decorative brush waterproofing, otherwise waterproofing money will be wasted!
Shortly after moving into a newly renovated house, wall surface will become damp and mold spots will appear on it, as shown in picture above, which are relatively minor. And for this kind of problem, culprit is waterproof bathroom.
Firstly, flexible waterproof and rigid waterproof brushes are separated, and waterproof performance will be better if brush is in right place. Generally speaking, entire bathroom from floor to wall 30 cm, brush is flexible waterproof, entire bathroom wall up to 1 meter 8 positions or even slightly higher, brush is rigid waterproof.
Second, when applying waterproofing with a brush, sand corners twice as large and brush thicker. If your house is on ground floor, then this step must be completed. If conditions permit, wall can be painted up to 1.8 meters.
Third, when performing confined water test, water depth should be more than 2 cm, preferably 3 cm. After performing confined water test for 48 hours, go down in advance to check if water seeps through. If bathroom waterproofing can achieve these figures, are you afraid of water seepage and a return to dampness?