Cast-In Kit Installation Information

Sizes: 100mm code:WC100K

80mm code:Wc80K

50mm code:WC50K

Installed Prior to Pouring the Concrete Slab:

  • Installed on the PVC riser to the floor and shower drains.

  • The riser is cut down to allow for the depth of the flange.

  • The spigot/Mi pipe is marked 40mm ± from the top of the flange.

Tips & Tricks:

  • Prior to priming: Pre-fit the ABS puddle flanges to the PVC pipework to check the correct finished height required for the graded substrate.

  • Allow extra depth: Always allow an additional 10mm ± just in case. It’s better to have a greater grade than not enough!

Installation:

  • Prime and solvent-glue the pipework and puddle flange.

Tips & Tricks:

  • Always level the top of the puddle flange after installation.

  • Ensure the Base, Cap, and foam ring are firmly in place.

Required:

  • The datum of the FFL (Finished Floor Level) for the wet areas.

  • The type of grates and trench grate information should be provided in advance.

  • For grading substrates in concrete wet areas, the internal walls should be set out and marked, stacked, or pinned by the surveyor—this is an advantage.

  • Pre-plan the location of the floor and shower waste drains to ensure optimal grading of the substrates.

  • Calculate the required grade (1:80 or 1:100) to provide a datum for the top of the Cast-In Puddle Flange.

Tips & Tricks:

  • Screed back to the top of the puddle flange and remove any excess concrete. Allow extra time for this step to ensure the graded substrate is correct before continuing with the concrete pour.

  • Wipe around the top of the yellow Wondercap and keep it clean, as it serves as an important datum during installation.

  • Consider adding a second floor waste drain to reduce extra work and time when screeding large bathroom areas.

Benefits:

  • Graded substrates reduce the chances of waterproofing failures by ensuring that the wet areas drain positively to the floor and shower drains, even before the concrete is dry.

  • Reduces costs for construction repairs and warranties, and supports follow-up trades.

  • After the concrete is dry, remove the foam insert around the internal Base & Cap to drain ponding water around the floor and shower drains.

  • The internal Base & Cap prevents construction debris from entering the drain during construction.