Linear Drain Installation Guide
Next, you wanna have a ¼ “ by 3/16 “ V-notched trowel or a ⅛ “ by ⅛ “ Square-notched trowel. Do not put thin-set mortar on the drain. Okay, this is very critical, what waterproofs the drain so that if it ever plugs up and back flows, this will seal off the drain so that the water can never come up beneath the Vapor Shield membrane. Okay, so what we do is to [[ ]]. You wanna align your corners up and the lines that you drew on there. One line goes up, and get it really close to the lines in the corners, that’s why we draw the lines on here.
Next, we have flat edges. Now note: I actually round it with a file, I filed this edges, if you look in the tools that we recommended, we have a file in there because you wanna round this corners so that you’ll not accidentally poking the membrane everywhere. So all the trowel that’s already wore down, if you buy a new trowel, file those edges. Okay, it’s very important we start on the drain. Okay, now from here we wanna go out in every direction. Go away from the drain in every direction. Push the excess mud out the edges. Take the excess out. Peel this back to make sure you’ve got plenty of mud in there.