Updated: Jun 26
Waterproofing is often overlooked as an insignificant step when completing a major renovation project.
However, the actuality is that you must. Correctly install your shower pan liner when renovating showers and baths to avoid dealing with costly water damage down the line. Not only will you have to repair existing damage or replace fixtures ruined due to leaking water, but you will also be forced to re-do already completed work to ensure a safe and long-lasting finish. To help avoid this headache later on, today we'll walk through how to properly install your shower pan liner; so regardless of whether you plan DIY projects or hire professionals for any large job around your home, keep these steps in mind!
Install drain base
First, insert the drain base into a pre-made hole, with a recommended size of 4-1/2 inches for Oatey tile shower drains, and secure the flange to the subfloor with screws. If your drain is assembled, loosen the bolts that connect the clamping ring to the flange and remove the clamping ring. However, make sure to leave the drain plug at the center of the drain. Should you lack a drain plug, cover the drain hole with duct tape as a temporary solution., but be sure to obtain a drain plug later. Note that using felt paper with the pan liner is not recommended, as the petroleum in the felt paper can react with the liner, resulting in cracking or brittleness and ultimately leading to leaks.
When preparing the slope for a shower bed, you can choose between mortar or Oatey's Perfect Slope. If you want to perfect your cement shower bed construction skills, I'd be delighted to assist. By learning different techniques to slope your shower bed to perfection, you can ensure that your shower is always water-ready and looks like new.
Whether tackling a DIY project or looking to brush up on your handyman skills, having a little extra knowledge on creating the ideal slope for your shower bed is an invaluable asset to your repertoire. Oatey's Perfect Slope is recommended. If you use mortar, pour it onto the subfloor at a ¼ inch per foot slope, sloping inward from the wall framing to the top of the drain base. Once you've poured the mortar, follow the instructions for curing it.
Consider installing Oatey's Perfect Slope onto your subfloor to save time and avoid complications. Be sure to adjust the Perfect Slope to fit the dimensions of your shower, including around the drain, for a smooth and seamless fit.
Measure scrap pan liner for the curb.
Measuring the width of a curb before pouring is essential. To simplify the process of taking measurements., our pan liners come marked in 6 in. increments. Measure the inside and outside heights of the curb and the top width, then staple a piece of liner over the curb using these dimensions. Please ensure that it fully covers the top. Both sides. Add the inside curb height to the outside curb height and top width to get the total curb width.
To ensure precise sizing, measure and cut the pan liner accordingly.
Begin by ensuring that the pre-sloped mortar bed or Perfect Slope is dry and clear of debris. Then, make a five-inch mark up from the curb onto the wall framing and measure from that point down to the mortar bed to ascertain application height.
Subsequently, place the shower pan liner on a flat surface and measure and mark the length and width of the mortar bed as per the diagram below. Lastly, cut the pan liner according to your markings.
Total mortar bed length: 2x application height + mortar bed length
Total mortar bed width: total curb width + mortar bed width + application height
This regimen ensures accuracy, cleanliness, and feasibility during installation.
Install pan liner
Pro-tip for installing shower pan liner:
Pre-fold the edges before starting for an easy application.
Flip the liner over and make marks on three sides according to the required height.
Fold the sides at each spot.