This is the official Redblock Niche Install Guide for the N1014 and N1028 stainless steel shower storage niches.
Redblock Niche Installation in 4 Easy Steps:
The first Redblock niche install step involves preparing the framing. As you can see by the image, this is a relatively simple procedure with the goal of creating a wall recess where the niche fixture will eventually be placed. It also provides support for the mounting flange and a place to attach the mounting screws. We recommend that the niche be attached to the framing on 3 sides.
The next step of the Redblock niche install is to attach the tile backer board to the shower wall and cut the hole where the shower storage niche will be placed. You will need to measure out the position of the rectangular framing recess you created in the previous step, and make note of it. Then attach the tile backer board to your shower wall and mark out the shower niche position on the backer board surface. Then cut out the backer board between the framing in preparation for installing the niche.
The third step is the installation of your Redblock shower niche. Before inserting the fixture into the mounting hole, apply a thin bead of polyurethane sealant around the perimeter of the flange. This creates an the initial seal between the backboard and the fixture. Place it in position, and use 1 1/4″ tapered head stainless steel screws (#6 or #8) to attach the fixture to the wall. The mounting holes on the niche are tapered to allow the screw heads to recess flush with the mounting flange. Be careful not to over-tighten the screws.
The next step of the Redblock niche install is to apply the waterproofing membrane to the shower wall. Be sure to measure carefully and cut the hole in the membrane just slightly larger than the raised tiling flange. Apply a thin bead of polyurethane sealant on the surface of the mounting flange (over the mounting screws), and apply the membrane. Carefully press the membrane against the flange to spread the sealant and to eliminate any high points.
After the membrane is fully installed , the shower wall is now ready to tile!
Redblock Finished Shower Niche
As you can see in the image, an integrated tile border is incorporated into its design so additional tile edging or trim pieces are unnecessary. This trim is also welded to the M-Block™ flange to ensure a positive connection with the waterproofing membrane, eliminating the chance of any leaks if these instructions are followed.