We have no relationship with advertisers, products, or services discussed at this website. This article discusses the proper construction or installation of cement, pre-fab, or mortar-bed shower pans and shower pan membranes to build a leak-proof shower floor. This article series discusses current best design practices for kitchens and bathrooms, including layout, clearances, work space, and accessible kitchen and bathroom layout, clearances, turning space, grab bars, controls, etc.
We include advice on choosing and installing kitchen countertops, cabinets, and kitchen or bathroom flooring, sinks, and other plumbing fixtures and fixture controls such as faucets. A list of kitchen and bath product manufactures and sources is included. The fiberglass shower pan shown at left was placed and secured to the floor during bathroom construction, then protected from damage with cardboard pending installation of shower enclosure, plumbing, controls, and door.
A shower pan must be completely watertight and able to hold pooled water should the drain get clogged. For standard shapes and sizes, one option is to install a prefabricated pan made from lb polystyrene foam coated with a reinforced cementitious coating that is ready to receive tile. These range in size from 36x36 inches to 36x60 inches and come pre sloped with a built-in drain. One unit, called Pro-Form Bonsal American is bonded to the subfloor with latex modified thinset, coated with a liquid waterproofing membrane, and is then ready to tile.
As long as the subfloor is sufficiently stiff to prevent flexing, these units should perform well with 4x4—inch tiles. Smaller tiles may exert too much of a point load for the underlying foam, while larger tiles can cause problems with the slope angle. A less expensive option is to combine tiled walls with a one-piece fiberglass or acrylic shower pan not to be tiled.
These are the same materials used in one-piece shower or shower-tub units. A few companies also sell stand-alone solid-surface shower pans. Like other plastic units, these must be properly supported underneath to prevent flexing and cracking. Some require setting in sand, wet mortar, or plaster.
In general, acrylic units cost more than fiberglass but are stronger and less prone to flexing and cracking. Built-in-place shower floors using a mortar bed and modern waterproofing shower pan membranes can provide many years of trouble-free service.
For best performance use a heavy-duty sheet membrane, such as mil Chloraloy Noble Company , which is designed for use in shower pans and similar applications. Two-piece clamping-type drains are designed to seal to the membrane by compression between the upper and lower flanges see Figure Using a phrase of random words like: paper Dog team blue is secure and easy to remember.
All All. Menu Menu. Recommended Vendors. Real Estate Books. Featured Book. Get the Magazine. Search Nova. Log In Sign up. Create post. Rotate Log in or sign up to reply. Originally posted by Jesse Reynoso : Will tiling a shower bring in higher rents compared to just installing a prefab shower enclosure? Mike Reynolds Thanks Mike.
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This gives you the beauty of the tiled walls and the easy installation of a prefabricated pan. For tile purists, the only issue with this approach is that you have a synthetic shower pan that looks synthetic. The beauty of the tile ends at foot-level. Now you can get the best of both worlds. With the right type of shower pan, you can have an easy-to-install, virtually leakproof prefabricated synthetic shower pan and tile. For do-it-yourselfers, this is much easier and far more foolproof than the traditional tilers' method of forming a shower base from scratch.
Often called tile-over shower pans, shower pans that are designed to accept tile are heavier and sturdier than a normal pan so that they can withstand the weight of most users without cracking the grout or tile. In a typical installation, the shower pan is set into a bed of mortar to level it and to secure it to the subfloor.
Next, the walls are covered with cement board and are sealed to the pan with silicone caulk or with a special flashing followed by caulk. The tiles adhere to the base either with conventional modified thinset or with an epoxy adhesive supplied by the shower pan manufacturer. You cannot tile over standard polymer or fiberglass shower pans because they flex too much and will eventually crack the tile grout and possibly even the tile itself. It's helpful to dry-fit and pre-cut all of the tiles before applying the tile adhesive or thinset.
Since the shower pan is already at its eventual size, there will be no size changes along the way. You can even dry-fit these tiles outside of the bathroom itself if there are any space limitations.
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