Undoubtedly, one of the most common of bathroom and shower problems, and a task that a tiler will be frequently called upon to remedy. Failed bathroom shower tile and grout almost inevitably, will require extensive repair, if not a complete stripping out, renovation and retile of the entire area.It's a key reason to undertake comprehensive tiling courses which impart all the required knowledge and skills to competently complete full-scale tiling projects, and not just the replacement of one or two marked, chipped or cracked tiles. A Wall and Floor Tiling Diploma may suffice for basic DIY tasks or a 5 Day Introductory Tiling Course which enables candidates to become acquainted with the core principles and manual skills necessary to complete more ambitious tasks or towards learning to become a fulltime working tiler.Water penetrating the grout and infiltrating the tile backing is typically the common cause of mold growth in the tile grout lines, deterioration of the adhesive between the tile and the tile backer, or failure of the tile backer itself and affected grout and shower tiles falling off the wall. Under these circumstances, the existing area must be demolished and a new tile shower/bathroom built in its place.It is not often realised that bathroom shower tile grout must be sealed at regular periods. Grout is porous, and allows moisture to penetrate and must be resealed to maintain its water resistance. If there are holes, cracks, or even invisible cracks in grout lines, water will find its way in to cause mold growth, tile adhesive failure and water damage to the shower.Often, tiled showers installed over a finished space are responsible for wood rot, drywall damage and mold growth in a home. Therefore, regular maintenance of the water resistance in a tile shower will not only prevent costly damage to the bathroom itself, but other areas of the property.Once mold appears in a shower/ bathroom, remedial action must be taken immediately to prevent its spread and increasing costly damage as it is often underestimated how quickly the mold develops and deteriorates. Caught early enough, a superficial assessment of the mold damage might lead mistakenly to thinking that a limited repair is all that's needed to deal with the affected area only when in fact there are major underlying causes such as a source of leakage, a failed waterproofing membrane, ground slippage, etc.A fully trained, experienced and competent tiler will be qualified to make an informed decision on the correct course of action to take to rectify a problem of failed adhesive, grout and mold growth. Industry standard City & Guild NVQ tiling courses offer options with differing training schedules, from 3 week, 4 week, 6 week through to a full 8 week tiling course, which enable candidates to gain the mandatory and verifiable tiling knowledge and practical skill training required to begin their career in the construction industry.