1. For recessed fitting of hidden tray ensure existing joints are strong enough to support the hidden tray. Add additional support if necessary.
2. Scribe tray into joists or pack on top of joists as required (fig 1). Ensure all edges of the tray and the channel trap opening are supported by fitting cross members (fig2).
3. The hidden shower tray is supplied with x2 edging wings, these can be trimmed to fit flush against walls if required.
4. NOTE: The tray and trap can be rotated for alternative waste pipe position.
5. Fit shower channel waste to shower tray. Apply a bead of supplied adhesive to flange faces on top of tray. Push channel waste into adhesive, weight in position until adhesive is set (at least 4 hours).
6. Fit plumbing for channel tray. Make sure the trap is supported from below.
7. Fit tray making sure the top of the tray is level and will be flush to its surrounding sub floor prior to tiling (fig 3).
8. When satisfied that the hidden tray is correctly positioned, apply supplied adhesive to all supporting faces. Weight tray until adhesive is set (at least 4 hours). (Fig 4).
9. Build sub floor flush with the top of tray. Prime all joints and fit with supplied adhesive taking tape (fig 4) & (fig 5).
10. Tile with desired tiles as required (fig 6).

Concrete

Ensure the surface is clean, dry & free from dust, grease oil etc
Once clean, prime the whole area including 75mm up the wall from the floor with supplied tanking primer.
Apply with paint brush or roller (do not allow over application eg puddling).
Allow primer to dry approx 21/2 hours
The area is now ready to install tanking boards

Timber boards subfloor preparation

Ensure the floorboards are stable and well fixed.
All floorboards need to be firmly secured by screwing both edges to joists as shown in fig 1

(be careful not to hit hidden pipes and electric cables)
Once secured any high spot must be planed off to ensure a flat smooth surface.
Once clean, prime the whole area including 75mm up the wall from the floor with supplied tanking primer.
Apply with paint brush or roller (do not allow over application or puddling).
If unsure of floorboard suitability we recommend floorboards are removed and replaced with 22mm moisture resistant chipboard screwed to joists and PVA glued along tongue and groove. Alternatively overlay the floorboards with plywood.

Sheet timber (chipboard, plywood etc) subfloor preparation

Ensure there is no movement in the subfloor.
Once clean, prime the whole area including 75mm up the wall from the floor with supplied tanking primer.
Apply with paint brush or roller (do not allow over application eg puddling).
Allow primer to dry approx 21/2 hours
The area is now ready to install tanking boards

Please note

If unsure of timber subfloor rigidity it may require overlaying with plywood 6mm, 9mm, 12mm or 18mm depending on movement which will then require screwing at 150mm centres to secure.

Installing tanking boards

Once satisfied that subfloor preparation has been completed the tanking boards can be installed.
1. First find centre line and mark on subfloor (fig 1).
2. Work from the centre line using a good flexible tile adhesive and notched tilers trowel. Comb out only enough adhesive to lay 1x tank board ensuring that the board is completely bedded and supported in the tile adhesive.
Carry on this procedure cutting in the boards neatly into the walls (the tanking board can be cut with a Stanley Knife and straight edge). Ensure the tanking board rows are staggered 50X50, butted tight together
and are bedded level to each other and level to the edges of the hidden tray. Allow adhesive to set overnight.
3. Prime all joints including to walls and tray overlapping 75mm away from edges allow at least 21/2 hours to dry.

Installing tanking joining tape

Once tanking primer is completely dry install the self adhesive tanking jointing tape to all joints between tanking boards, walls and hidden tray.
1. Remove the backing of the self adhesive tanking tape as you use. Tape over all joints 50mm from the edges (a marked line may be required to ensure even overlap) pressing firmly to ensure good adhesion.
2. At junctions overlap tape by at least 50mm (fig 2)
3. All edges now require taping (fig 3) with 50mm adhered to subfloor and tape creased 50mm up the wall. It is generally easier if the tape is creased in half down its length before removal of backing and fitting. Also a marked line 50mm from edges of floor makes for even overlap, (fig 3)
4. Fit supplied internal 8 external corners supplied in the kit (x4 each) then overlap in the corners to make corners watertight (fig 4,5)
5. Cut sealing tape to seal around any pipes passing through the floor (fig 6)
6. To ensure perfect tanking use supplied tanking putty to seal all corners and around pipes (fig 7)

Note: if falls to whole bathroom are required please check prior to tanking as subfloor preparation may be required,