Mobile Toilet Tile Renovation

When renovating a mobile toilet by laying tiles, it is crucial to focus on pipeline fixation, waterproofing treatment, and the choice of construction methods. Here are the specific considerations:

1. Carefully handle pipelines when relocating the toilet position If the renovation involves moving the toilet position, it is essential to first confirm whether the developer's preset pipeline positions can be adjusted. The pipelines set by the developer (such as drainage and water supply pipes) are usually fixed structures and should not be arbitrarily altered, as this may damage the building's overall drainage system or cause leakage risks. If relocation is necessary, plan the connection method between the new position and the existing pipelines in advance to ensure compliance with building codes. For example, when relocating a toilet, pay special attention to the drainage slope: the height difference between the new position and the original drainage outlet must meet a slope requirement of at least 2% to ensure smooth sewage discharge; simultaneously, check the underlying structure of the floor slab to avoid damaging its load-bearing capacity or waterproof layer due to relocation.

2. Waterproofing treatment is a critical step If the original toilet has not been waterproofed or the waterproof layer has aged, it is mandatory to reapply waterproofing treatment before laying tiles. The standard procedure involves applying two coats of waterproofing paint: the first coat is applied horizontally, covering the floor and walls (with a minimum height of 30 centimeters, and up to 1.8 meters in the shower area); the second coat is applied vertically to ensure no missed spots or bubbles. After the waterproof layer dries, conduct a 48-hour closed-water test to observe whether any leakage marks appear on the ceiling or walls downstairs. Only after confirming no issues can tile laying proceed. If the original waterproof layer is intact and undamaged, it can be retained, but the base layer's dust must be cleaned before tile laying to avoid affecting tile adhesion.

3. The choice of construction method affects efficiency and cost

• Original wall tile handling: If the original wall tiles have no hollow drums, detachment, or severe dirt, new tiles can be directly laid on the old tile surface, saving the steps of knocking off old tiles, base layer repair, and waste removal. However, note that the old tile surface must be roughened to enhance adhesion, and the thickness of the newly laid tiles will increase the dimensions of door frames, switches, etc., requiring prior adjustment.
• Floor tile laying: The floor must be leveled first, ensuring a flatness error of no more than 3 millimeters to avoid tile hollowing. When laying, adopt the 'wall-over-floor' technique (i.e., wall tiles press floor tiles) to reduce the risk of water accumulation in seams; grouting should use waterproof and mold-resistant materials, such as epoxy grout, to extend service life.

Post-renovation recommendations: Avoid stepping on the tiles for at least 24 hours after laying until the tile adhesive has fully cured before proceeding with grouting or installing sanitary fixtures; during daily use, avoid heavy impacts on the tiles and regularly check whether the drainage outlets are blocked to maintain the renovation effect.