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This section will detail the various methods used in constructing tiled showers and tubs. These installations are wet areas. This means that care should be taken to choose a tile and method that can stand up to repeated exposure to water. (Refer to "How to Shop for Tile & Stone" for further information) It also means that the design of these areas should take into account the possibility of mold and mildew problems.
Generally the stone or ceramic tile should be vitreous or impervious in terms of its water absorption characteristics and the substrate should be as water-resistant as possible. While the methods are considered, pick the best method that your budget will allow.
Again, all local, state, or federal building codes should be followed and any necessary permits obtained prior to starting the work.
Methods/Preparation
There are two types of shower installations:
There are two types of tub installations.
- The first type is prefabricated and installed tubs made of fiberglass, steel, or cast iron.
- The second is the tile lined tub or "roman" tub.
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Dr's Tip: When choosing a tile lined shower, pick a tile for the floors that will provide the necessary slip resistance, especially in commercial applications. |
The methods for showers and tubs are nothing more than wall methods with added requirements of water-resistance and resistance to mold and mildew. They also include requirements of water-resistant joining of abutting surfaces. Refer to the "Walls" section for detailed information. Figure A, B, and D are perfectly acceptable methods for tub enclosures whether the tub is made of fiberglass, steel, or cast iron. For roman or tile lined tubs, only figure B should be used in the tub itself. For walls above the roman tub, figure A can be used.
Similarly, Figures A, B, and D are acceptable for shower enclosures whether they are used with a prefabricated shower receptor or not.
As usual, care should be taken to insure that all-necessary expansion joints be identified and properly constructed. Primarily joints requiring a sealant instead of hard grouting will exist in all 90° corners or where tile meets a dissimilar surface like a prefabricated tub or shower pan.
Let's look at the various shower installations first. If a prefabricated shower pan is selected, treat this application as you would a prefabricated tub surround. The prefabricated shower pan has the same elements and requirements for installation as a tub made of fiberglass, steel, or cast iron. These methods can be used over dimensionally stable wood or concrete sub floors.
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