Tool Preparation: A skilled craftsman needs the right tools.
Installing waterproof backing panels is like doing a craft project; you need to prepare all the necessary tools first: a utility knife, measuring tape, level, electric drill, screwdriver, special glue, and a roll of waterproof tape. It's recommended to wear old clothes, as glue on clothes is much harder to remove than on the wall. Remember to check if the wall surface is flat; any unevenness exceeding 3mm should be leveled with cement, otherwise the backing panel will stick like a seesaw, significantly reducing its waterproofing effect.
Installation Process: Three Steps to Create a Waterproof Barrier
Measure and Cut: Measure the wall dimensions with a measuring tape and draw cutting lines on the backing panel. Cut at a 45-degree angle with the utility knife for a cleaner cut. Mark the locations of electrical outlets beforehand and drill square holes.
Apply Glue: Apply glue to both the wall and the back of the backing panel simultaneously, spreading it evenly like frosting on a cake. Wait 3 minutes for the glue to thicken; this is when it will adhere best.
Reinforcement: Use a screwdriver to tighten screws at the four corners and the center, maintaining a spacing of approximately 30 centimeters. Apply waterproof tape to the joints and press it flat with a scraper to prevent moisture seepage.
Detail Treatment: The Devil Is in the Corners
Corners are the most prone to leaks. During installation, cut the backing board at a 45-degree angle to create a natural drainage channel. Where pipes penetrate the wall, first fill the gaps with expanding foam, then wrap waterproof tape at least three times. Finally, don't forget to apply a layer of waterproof paint to the entire wall surface, like applying a tempered glass screen protector to a phone-an extra layer of protection for peace of mind. After installation, let it sit for 24 hours to allow the adhesive to fully cure before proceeding to the next step of the renovation.