Installation Instructions

www.prosourcecenter.com
Rev 5/30/2019
11. Measure the distance between two corners and cut a section of 5” WP band that is about 1 inch less (it’s
best to be about 1/2” away from each edge while still allowing for a 2” overlap.) Fold the strip longitudinally
and crease it to prepare for install. Apply 3/16” notched modified thin-set mortar to the floor-to-wall joint
that you just measured. Seat the creased WP band piece first by hand then with the flat edge of a trowel
being careful not to disturb the bond you previously completed on the inside corners.
12. Repeat band installation procedure for all pan-to-wall and pan-to-curb
distances between your inside corners. Repeat the same procedure for any
vertical distances where two walls meet at a corner. When dealing with any
edge or corner, some installers use two straight edged tools at the same time
to speed installation. Be sure to clean up any excess thin-set that has been
forced out with your straight edge. These installed WP band sections double-
protect your installation at plane changes by waterproofing and isolating your
tile and grout from cracking at these traditionally vulnerable edges.
13. Mark out a wall section to incorporate a full-width sheet of membrane. As when preparing the band,
measure from corner to corner then cut a length from the large roll of WP membrane about 1 inch short to
allow centering of the piece about 1/2” away from each edge while still overlapping the band by 2”. Apply
3/16” notched modified thin-set mortar to the entire wall section marked out then seat and position the
prepared membrane. Once positioned, force the membrane into the thin-set first by hand - working from
the middle out. Follow up with the straight edge to force excess thin-set out from between the membrane
and wall. To help prevent trapped air, start from the middle and work your way to each edge. Ensure that
your thin-set remains creamy and is achieving nearly a 100% contact and bond. If your thin-set starts to
get too dry, mix a new batch.
The remainder of the installation is going to follow this same sequence of installation procedures. For
seamless continuation of the waterproofing, each new section will overlap the previous by 2 inches. The WP
membrane features a dashed line near the edge as a guide to assist you in proper installation.