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Redblock Shower Niche Install Guide

This is the official Redblock Niche Install Guide for the N1014 and N1028 stainless steel shower storage niches.

Niche Specs

N1014 Dimensions (PDF)

N1014 & N1028 Niche Installation Sheet (PDF)

Redblock Niche Installation in 4 Easy Steps:

Step 1

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.

Back framing for Redblock niche

Step 2

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.

Backer board install during Redblock niche install

Step 3

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.

Installing screws during Redblock niche install

Step 4

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!

Kerdi membrane install during Redblock niche install

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.

New houzz angled empty niche with green glass tile

Niche Installation Video

2 thoughts on “Redblock Shower Niche Install Guide”

  1. Hi again Ken,

    If you check out the N1014 product page, spec sheet, install sheet (and video) you will see the answer to most of your questions. The mounting flange is only 1mm so build-up should not be a problem if installed according to the directions.

    If you’re planning to purchase the new model N1014 shower niche (available in the summer), there will be tapered mounting holes in the flange, designed for #6 or #8 tapered head stainless steel screws. This means that the screw heads will be recessed to prevent buildup.



  2. Regarding the N1014, If you install your flange on top of the backer board won’t that create a built up surface which will make the tile not level with the plane of the wall? Why not router out a notch for the flange to sit in? When you say wafer head screws do you mean galvanized drywall screws?… Also what thickness of tile is your flange designed to accommodate. What if your tile is too thick and will not slide in behind the stainless steel frame?Should the rough opening be 14 1/2” x 10 1/2” ?

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