How do you tile over existing old walls during a renovation?
Release Time:
2015-08-04
Source:
How do you tile over existing old walls during a renovation?
When renovating and remodeling an old house, tile replacement is often required. So, what issues should you pay attention to when tiling over existing walls, and what preparations and steps do you need to take?
First, remove the old plaster layer to prepare for tile installation. How should this be done to ensure a more secure and durable tile bond?
1. Clean the wall surface thoroughly, paying particular attention to areas that are blistered or loose; the substrate must be solid, smooth, dry, clean, and free of oil stains.
2. Hollow areas, loose substrate, and protruding objects must be removed first, and any uneven substrate surfaces must be properly repaired with polymer-modified cement mortar.
3. Mixing ratio: powder to water = 3.4:1 (by weight).
4. Mixing sequence: First pour the water into the mixing bucket, then add the powder, and finally use an electric mixer to blend until a smooth, lump-free paste is obtained. Let it stand for 3–5 minutes, give it a brief stir, and it is ready for use.
Tile installation procedure:
1) Use a notched trowel to apply the adhesive mortar onto the working surface, ensuring even distribution in a series of uniform teeth. Apply approximately 1 m² at a time, then allow the mortar to slightly set before pressing the tiles firmly into place.
2) When selecting the size of the toothed scraper, consider the flatness of the working surface and the degree of unevenness on the back of the tiles.
3) If the grooves on the back of the tile are deep, or if the stone or tile is large and heavy, double-sided adhesive application is recommended—apply adhesive mortar to both the working surface and the back of the tile.
4) After the tiles have been laid, the grouting process may only be carried out once the adhesive has completely dried and hardened (approximately 24 hours).
