Purus Maxxus Tray - Manual (Page 2)

Maxxus may be fitted onto existing floorboards, onto a plinth, or onto joists by removing
floorboards. Packing strips on the joists may be necessary e.g. for floorboards 18mm thick, use
4mm plywood or 4mm tile backer board to make a level-access floor.
Use a long spirit level at each stage to ensure levels.
All unsupported edges must be under-battened.
25 mm floor boards or ply or Shoot
Board
spirit level
edge of Maxxus let into floor
joist
ceiling below
waste pipe
exit options
18mm ply on 38 x 38 battens
or noggins
wall
22mm Maxxus
drain
mortar or tile adhesive infill
concrete chiselled out
trough for waste
pipe chiselled out
vertical waste option
Preparation onto Timber -
It is best practice not to install over old Victorian floorboards or old chipboard as it may be out of level, uneven or weak; if possible
replace with plywood or for a superior sound-proofed floor use Shoot Board.
Modern floors are fairly good but it’s still a good idea to have a perimeter band of plywood or Shoot Board 500mm wide on two sides
of the Maxxus eg: if area is 1 sq mt the total wet area to membrane seal is 2 sq mts. Alternatively overlay entire floor with 6 or 10mm
tile backer board (tbb) taped with Flex tape acting as integral membrane . Uneven or ‘cupped’ floorboards must be filled so bed the
tbb onto flexible tile adhesive to fill the hollows.
Installation on optional 3 mm bed of adhesive (silicone or flexi tile adhesive). This option levels off with 25 mm floorboards (no
step). Note - under-boarded sub-floor is required for this option.
Preparation into Concrete -
Cut a recess 35mm deep by the area of the Maxxus selected. Mark drain outlet and go to 80mm deep over 300 x 300mm area. Finally
chase a channel for the waste pipe with a slight gradient. Apply a weak mix of sand and cement to bed Maxxus, ensuring gaps around
the drain are also partially filled. Use a long spirit level when bedding Maxxus into adhesive, even 1 o out will affect the speed of
drainage and may cause pooling.
The Drain -
Remove clear plastic drain cover using 1”/25mm chisel. The cover will probably break, then remove blue snap-ring. Use the solvent-
weld reducer to attach 40mm waste pipe or alternatively connect to 50mm pipe. Bed the drain flange onto a bed of silicone. Insert
drain into top of tray, connect waste pipe below, then lower entire assembly. A short length of waste pipe may assist in connecting the
drain, especially if access is limited. Screw through drain flange into Maxxus using BZP woodscrews or self-tappers.
Securing Maxxus -
Onto timber:- Secure with 3 or 4 screws along each edge ensuring that Maxxus is not thrown out of level. NEVER USE SILICONE
below tile level except for bedding Maxxus if used as an alternative to tile adhesive.
Into concrete:- Use long screws as a pressure device to level Maxxus — check with long spirit level. When dry insert 3 or 4 screws
along each edge. Fill the gap around perimeter of Maxxus with a superior MS Polymer No-Nails type adhesive. For vinyl flooring fill
with car body filler, to prevent the vinyl sagging into the gap.
Finishing Off:- Finally apply the membrane, vinyl or tanking, dressing it into the drain. Insert blue snap ring.
Tiling -
Note: Maxxus may be reduced in size by any amount, or the slope extended by our 300 x 1000 extension pieces or by plywood
extensions.
Leakage Guarantee and Membrane Failure Warranty -
If used and applied correctly the products have a life-of-tiling or life-of-vinyl guarantee provided that grout lines are maintained.
Suitable for diy use provided installation is to Building Regulations standard and all instructions have been followed.
Disclaimer -
Products should be installed by a competent person within the meaning of the Building Regulations. We cannot accept responsibility where this is not
the case. We reserve the right to make a refundable charge in advance of taking remedial action where we feel that incorrect fitting may be an issue.
O
We reserve the right to change prices, designs and specification at any time without notice.
Tile
Setting the height of tiling adaptor grid
grout
s/s grid
s/s frame
3mm adhesive