The shower cubicle in the attached was installed by the builders in 97. After a while the sealant became stained so 6 years ago I removed it and re-sealed using a generic type. When removing the sealant some of the grout in the corners came out with it so I had the "brilliant" idea of extending the sealant up the wall... see images 727 & 730.
The grouting in the cubicle seems to be OK except at the corners: see 728, 729. The builders seem to have applied the grouting in several layers, see 732.
There is no evidence of any leakage. Until I started reading about tiling and showers on this forum I was feeling fairly confident.
Now I have the following questions:
Materials: are Mapei waterproof fix and grout and Unibond anti mould sealant likely to be suitable? http://www.screwfix.com/p/mapei-waterproof-fix-grout-white-1-5kg/64982 http://www.screwfix.com/p/unibond-anti-mould-sanitary-sealant-ice-white-300ml/95522
Tools: I expect to have to remove a small amount of grout along the corners. Do I need to use any special tools? If so, could somebody recommend a hand tool please? for example? http://www.screwfix.com/p/pro-grout-rake-cutter/17903
Method: Would it be OK to use sealant instead of grout in the corners? if so, should I remove the all the old grout first?
Grout staining: The old grout has become discoloured in some areas to to the growth of mould. I have tried grouting pens, potassium permanganate and bleach. Nothing seems to work for very long. Is there such a grout sealant that works? http://www.tiledoctor.co.uk/groutsealer.html
Do any of these electric grout cleaning brushes work? http://www.amazon.co.uk/Replacement..._sim_79_1?ie=UTF8&refRID=1KKDCTEW0F3KQ9TK7Y6S
The grouting in the cubicle seems to be OK except at the corners: see 728, 729. The builders seem to have applied the grouting in several layers, see 732.
There is no evidence of any leakage. Until I started reading about tiling and showers on this forum I was feeling fairly confident.
Now I have the following questions:
Materials: are Mapei waterproof fix and grout and Unibond anti mould sealant likely to be suitable? http://www.screwfix.com/p/mapei-waterproof-fix-grout-white-1-5kg/64982 http://www.screwfix.com/p/unibond-anti-mould-sanitary-sealant-ice-white-300ml/95522
Tools: I expect to have to remove a small amount of grout along the corners. Do I need to use any special tools? If so, could somebody recommend a hand tool please? for example? http://www.screwfix.com/p/pro-grout-rake-cutter/17903
Method: Would it be OK to use sealant instead of grout in the corners? if so, should I remove the all the old grout first?
Grout staining: The old grout has become discoloured in some areas to to the growth of mould. I have tried grouting pens, potassium permanganate and bleach. Nothing seems to work for very long. Is there such a grout sealant that works? http://www.tiledoctor.co.uk/groutsealer.html
Do any of these electric grout cleaning brushes work? http://www.amazon.co.uk/Replacement..._sim_79_1?ie=UTF8&refRID=1KKDCTEW0F3KQ9TK7Y6S