HOW TO INSTALL AND
WATERPROOF A WETBASE
WETROOM SHOWER TRAY IN A
CONCRETE FLOOR.
W W W. W E T R O O M S - O N L I N E . C O M
1
Wetrooms On-Line Wetbase low profile shower trays are designed to create a flat
walk in shower area without raised steps or platforms. The tray can be inset into or
onto a CONCRETE floor and then tiled over.
The coated shower tray is premachined with the correct fall in all directions to the
drain which is partly attached to the underside of the tray at manufacture. It requires
no additional support when fitted into a concrete floor.
If required the tray can be installed on a raised platform—see stages 1a and 2a on the reverse.
THE TRAY IS NOT SUITABLE FOR VINYL FLOOR COVERINGS
2
Clear the working area, establish where you want to fit the tray and place tray on top
of the floor. Mark around the tray with a pencil and draw the position of the waste
hole. The tray can be trimmed with a hand saw up to 50mm off any side if required.
3
Remove sufficient existing concrete from the area where the tray is to be fitted to
accommodate the tray. If the floor is to be newly screeded shutter off the area where
the tray is to be fitted to allow for its fitting later.
4
Identify the position of the drain and trap and remove any existing concrete to a
depth of approx. 85mm down from the underside of the tray together with a channel
to accommodate the waste pipe. Some further damp proofing is advisable where
the existing concrete floor has been removed for both the drain and the waste pipe.
5
Connect 11/2 inch ABS solvent weld waste pipe into the end of the drain using the
correct glue. The other end of the pipe should connect into the main house waste
drainage system in the normal manner. Ensure the rubber seal is fitted to top of the
drain. Now test the drain by pouring water into drain to ensure it is water tight.
6
The tray requires even support underneath and we suggest a bed of concrete of
sufficient thickness to ensure the tray when fitted is level with the rest of the floor
including any materials such as tile backer boards to be installed on the concrete
floor surface.
7
Test the fit the shower tray to ensure a tight fit, and alignment of drain. Apply a thin
bed of flexible adhesive to the area where the tray is to be secured using a notched
trowel. Fit the shower tray over the bed of adhesive and firm down ensuring the tray
is level in all planes
Now fit the drain trap assembly using the drain securing tool. We suggest you smear
a fine bead of silicone around the underside rim of the trap before finally securing
into place. Now over lay the remaining floor area with wetbase thermal tile backer
boards.
WETROOMS ONLINE HELPLINE NUMBER 0151 608 4008
TANKING (waterproofing)
WALLS AND FLOOR AREA.
8
9
Apply a bead of silicone sealant to the entire perimeter of the tray and allow to cure.
Open up the lastogum tanking kit box and remove the 0.5 ltr white bottle of primer.
Follow the mixing instructions and apply primer to the walls and floor of the area you
wish to tank. Allow to dry as per instructions.
10
Using a 2 inch paint brush apply a thin bead of lastogum paint on the horizontal and
vertical joints of the area you wish to tank.
11
Starting with the horizontal surfaces first, apply the rubberised jointing tape (BLUE
SIDE UP) over the lastogum paint. Press any air bubbles out and smooth out the
jointing tape and overlap the tape in the corner to form a seamless joint.
Allow the lastogum to dry fully and then apply the first of 2 coats of the lastogum
tanking paint to the walls and floor of the wet area. If there is any lastogum left, apply
a final coat. The whole shower area should now be a dark grey colour and the blue
tape will also be painted over.
NOTE the wetbase wet deck is water proof BUT the joints to the floor and walls will require TANKING with the Lastogum tanking kit.
The wetroom wet base and tile backer boards can be easily trimmed to accommodate room conditions e.g. out of square corners etc. If during shipping or installation the corners
or edges have been knocked it will not adversely affect the performance of the product. Simply recoat or fill the damaged edges with fixing adhesive and then overcoat with
lastogum tanking kit.
LAYING THE WETBASE TRAY
TO ACHIEVE STEPPED UP
WETROOM FLOOR.
1A
The tray CAN also be used on a raised platform if drainage is a an issue or the room
design requires a step.
It can also be set into a concrete screed floor. However we do recommend that you
seek professional advise prior to installing within concrete screed floor.
THE TRAY IS NOT SUITABLE FOR VINYL FLOORING
2A
If you cannot set the tray level into the floor and have to raise the base up
accommodate above floor drainage we suggest you construct a 75mm x 50mm
support frame on top of the floor to the overall size of the wetroom area and cover
in 18mm ply. Then lay wetbase on top and secure with flexible cement adhesive.
The support frame should resemble a ladder offering support to the tray in all
directions. This can be screwed down to the joists underneath but ensure you have
planned the exit point for the waste pipe and trap. Cut your marine ply deck to size
and test fit.
Place the tray down on top of the marine ply deck and draw round the drain position.
Cut out a key hole shape in the marine ply and ensure trap is correctly aligned.
Secure the ply deck down to the support frame. Then fit the tray and secure with
cement based adhesive ensuring the tray is level in all planes.
Please return to stage 6
WETROOMS ONLINE HELPLINE NUMBER 0151 608 4008