The following general mistakes are always committed by the house owners, when looking to get bathroom waterproofing jobs done, carried out over the years. Many home owners don't give little importance to bathroom waterproofing; especially shower cubicles during a bathroom remodeling process. The common mistakes we noticed by self driven home owners are described below and Supreme Tiling has corrected it.
Attempting to do the waterproofing job by yourself, yet having no experience and not following the waterproofing material data sheet and application instructions.
Giving the job to an unlicensed and unqualified person and not requesting warranties for the job in writing.
Floor and wall surfaces which can be concreted at times, wood chipboard paneling or cement fibre boards, not preparing and primed it inadequately before applying the waterproofing membrane material.
Not leaving the waterproofing membrane material enough time to dry before applying cement and sand bedding or gluing tiles to it, will leave channels for water to drain.
Inadequate sealing of floor to wall and wall to wall corner details, where there is a lot of movement due to temperature changes which is particularly a problem with cement fibre sheeted walls on timber framing.
Not having the membrane turned up under the bathroom door area with an aluminum or brass angle fixed into the floor first. This is a very common mistake and easily avoidable.
Inadequate sealing around pipe and tap wall penetrations in shower cubicles and bathtubs, usually because the plumber had no attention to detail or used the wrong sealant, resulting in water leaking into the wall. In some instances the repair is not so extensive or difficult, but will still cost money.
Although not directly related to waterproofing, the tiler using the wrong type of glue for wall tiles, because the walls were waterproofed with a polyurethane based waterproof membrane for example while the glue used is acrylic based.
The renovator should conduct a water pressure test on the water pipes, by leaving the pipes under water pressure for 24 hours and do a visual inspection for any water leaks before the walls are sheeted to ensure that that are no pinholes in the system where water can slowly drip and find its way under the bathroom floor and surrounding areas. In some of the waterproofing rectification jobs I had a contract to do, the culprit for the water leaks from under the bathroom floor turned out to be a small leak in the water pipe in the wall which kept dripping ever so slowly and saturating the area around it.
Lastly, if you are going to do the bathroom waterproofing perfectly, then you must read the manufacturers data sheet for the material, or the instructions on the side of the can, bucket, tube of sealant or other packaging that that waterproofing materials come in. If you were to use a product that haven't used before, even though it is chemically the same type of material will still read the manufacturer's instructions on application, priming and other info because there might be something you don't know. Hence you can hire Supreme Tiling who are thoroughly trained and filled with knowledge with all those application and manufacturer's instructions to do the job thoroughly with perfection.