About TrueDEK Linear Bases
TrueDEK Linear shower bases feature a fully integrated drain gulley molded directly into a structural, pre-pitched base. The drain gulley offers three drain connector locations to ease installation — choose the drain location that’s best for your job site, or choose to install multiple drains to handle high volume water flow.
As a structural shower foundation, a TrueDEK Linear base may be installed directly on joists to make a curbless shower that’s flush with the rest of the bathroom floor.
Precisely pre-sloped, each base ensures swift and accurate drainage without any demands on the installer. All you have to do is make sure the base is level.
Because the shower bases are so thin and strong, expensive joist modifications are unnecessary.
If you ever want to remodel your shower, simply remove the tile, repair the waterproofing, and lay new tile.
What You'll Need
- TrueDEK Linear foundation
- drain assembly
- 2″ drain connector
- waterproofing kit (additional waterproofing supplies may be required depending on the size and complexity of the project)
- circular saw
- flush cutting saw or reciprocating saw
- power drill
- belt sander or orbital sander
- caulking gun
- 3¼” hole saw with mandrel
- pry bar
- speed square
- scissors or utility knife
- 3″ or 4″ paint brush (throw away type)
- paint roller and cover
- 2× lumber for blocking
- polyurethane construction adhesive (four to five 10 oz. tubes)–use a product that bonds to plastic and wood
- acrylic paintable caulk (one 10 oz. tube)
- #9 x 2″ ceramic coated or stainless steel flathead screws
Spec Sheets, Installation Guides, etc.
What holds the cover in the tile adaptor?
Basically, it's gravity assisted by friction. There are small rubber bumpers that you insert into pre-bored holes in the sides of a cover. Once the bumpers are in place you press the cover into the adaptor and it stays in place. The cover and its underpinnings are very strong. It will only come out if you do so intentionally.
How deep is the linear drain cover?
All covers are 1/2" deep.
Can I cut a linear foundation?
No, you really shouldn't. The manufacturer has changed the composition of the base and maintaining its integrity now requires that all edges remain intact.
What do I use to bond tile to the shower foundation?
Use a quality brand of modified thinset mortar mix. Before installing tile, TrueDEK foundations must be coated with Tank/10 waterproofing compound, which improves the bond between the foundation and the modified thinset mortar, and provides an anti-fracture membrane to protect grout and tile from minor movement in the underlayment that may otherwise cause a crack or fissure in the tile layer. Waterproofing must be completely dry before applying modified thinset mortar.
Do I have to use ARC waterproofing supplies, or can I use different products?
Some waterproofing products will not bond well to the plastic foundation. The waterproofing products ARC carries have proven to work over thousands of installations, and we stand behind them. Using other products may work, but you'll have to experiment to build the confidence you'll want to have before laying the tile. Whatever you use has to do the job for the long haul.
Do I need to tape the joints around a shadow box, niche, or built in bench?
Leaving joints uncovered allows more opportunity for water to penetrate your framing structure. In the long run it pays to embed tape over every joint. You'll never regret it. Remember, most tile and stone are impervious to water, but grout is not.