Hi,
About two and half years ago I tiled my bathroom - quick job when we moved in the house. After 18months we had the bathroom re-fitted and I re-tiles.
We used the same tiles with the same shower over the bath but invested in the recommeded power shower resistant, mould resistant grout.
After 10 months I noticed a tiles had come loose. Behind it I found a very damp wall. Close inspection of the grout found cracks and loose tiles all over. Having removed some of the tiles today I have found extensive black mould concentrated around areas of grout. There is also a off white mould growing like fine roots through the ridges in the adhesive. This later mould extends from a area of untreated (tiled over) soft wood forming the end of a stud wall. Untreated timber in this position was the result of a cowboy bathroom fitter.
Is is normal to find mould behing grout? Is this a failure of the grout? The only element that has changed from the previous tiling is the grout (i.e same make tiles, adhesive, same shower used in the same room).
I am going to strip back and dry out and the stud wall will be removed before retiling. Do I have anything to worry about in terms of mould re-growth etc?
Any thoughts greatfully received
Sam
About two and half years ago I tiled my bathroom - quick job when we moved in the house. After 18months we had the bathroom re-fitted and I re-tiles.
We used the same tiles with the same shower over the bath but invested in the recommeded power shower resistant, mould resistant grout.
After 10 months I noticed a tiles had come loose. Behind it I found a very damp wall. Close inspection of the grout found cracks and loose tiles all over. Having removed some of the tiles today I have found extensive black mould concentrated around areas of grout. There is also a off white mould growing like fine roots through the ridges in the adhesive. This later mould extends from a area of untreated (tiled over) soft wood forming the end of a stud wall. Untreated timber in this position was the result of a cowboy bathroom fitter.
Is is normal to find mould behing grout? Is this a failure of the grout? The only element that has changed from the previous tiling is the grout (i.e same make tiles, adhesive, same shower used in the same room).
I am going to strip back and dry out and the stud wall will be removed before retiling. Do I have anything to worry about in terms of mould re-growth etc?
Any thoughts greatfully received
Sam