I AM BUILDING A NEW HOME WITH A BARRIER FREE SHOWER STALL. THE SIZE OF THE STALL IS 6′-8″ SQUARE FOR WHEEL CHAIR ACCESSABILITY. I CAN’T FIND A MANUFACTURED BASE IN THIS SIZE, SO I AM THINKING OF FORMING A CONCRETE BASE WITH SOME SORT OF WATERPROOF COATING. ANY SUGGESTIONS?
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Keeping HVAC systems within the conditioned enclosure can be tough without a basement; one option is to use plenum trusses for the roof, which offer a space for equipment and ductwork.
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There are several brands of trackless shower doors that have a low threshold that can be rolled over, yet will hold back water. One I built several years ago had a mosaic tile floor with a pretty severe slope to a floor drain in the middle of the shower. It worked well. Just do a Google search for trackless shower doors or shower accessibility.
Recently went through the same research. We needed a 4x6 base with a curb low enough that our recently injured Bro' could navigate in his chair.Couldn't find a 'glas or acrylic base to suit. We opted for a locally made cultured marble base[plain white] with centre drain and tile flange on three walls.We decided against the hand formed, placed concrete, epdm-lined, double-step drain,mortar-bed,thinset, ceramic tile floor route for time constraint reasons. The manufactured unit was delivered to our site and placed in the hole for just under $1,000 Cdn. It is CSA approved and makes a bullet proof installation, neccessitated by the finished space below it. We boarded the walls with 1/2" plywood, set the base against this this and covered the plywood with Hardie backer down over the tile flange. The tile setter covered the whole walls with mastic and mesh waterproofing before setting the tile. I'm confident that it will work and it looks brilliant. The plywood is for impact resistance. It also makes mounting of accessories easier.
The concrete method works fine and is legitimate with the plumbing inspector. I would not hesitate to build one on a basement floor if the time/$ factor worked out.
Go to the John Bridge forum. Lots of info. Check out the kerdi/ditra products.
http://www.johnbridge.com