Do you put subfloor under shower pan?
Wood floors first need to be able to withstand the weight of a custom walk-in shower. The subfloor needs to be a minimum of two layers of 3/4-inch exterior grade plywood before you can move to actually putting down the concrete layer of deck mud that provides the slope and the base for the shower pan tile.
What is a shower subfloor?
A subfloor is the layer at the very bottom of your shower pan. Most homes will consist of a standard subfloor constructed of running boards laid over floor joists, a plywood layer over the running boards, or if on a first floor, the subfloor can be a concrete slab.
Do you need vapor barrier on plywood subfloor?
Manufacturers Require a Vapor Barrier Your plywood subfloor may look dry, but after you install the flooring, moisture can migrate up through the subfloor and penetrate the flooring, and the results are usually disastrous. You can purchase foam or vinyl underlays with built-in vapor protection.
Do bathroom floors need to be waterproofed?
If the bathroom floor is above ground level, or made of timber, plywood or particleboards, the entire bathroom floor must be waterproofed.
Does flooring go under shower base?
A floating floor needs to float, do not put it under the shower pan. You will need to leave an expansion gap at the pan per manufacturer recommendations on whatever floor you choose. Therefore, you need not be perfect with the install, but will cover the edge with molding.
Can I use cement board for shower floor?
Cement board can be used just as effectively on walls, such as showers and bathtub surrounds, as it is on floors. Doing this will require that you remove the existing surface material before installing backerboard over the studs.
Do you need to waterproof under a shower pan?
Take extra precaution to waterproof. layer of waterproofing between your subfloor and your shower pan will act as a saving grace. Apply a ring of caulk around the drain and then, once the shower pan is in place, seal along the perimeter where the pan meets the wall with a bead of caulk.
What is a subfloor in a shower pan?
What happens if you leave plywood under a shower?
A plywood subfloor under a shower, also known as underlayment, is vulnerable to moisture damage that can rot the wood. Where a rotten subfloor is left unattended, the rot may extend to the floor joists that support the floor.
How do you install a subfloor in a bathroom?
To install the subfloor, whether it is the primary or secondary layer, you will need to accurately measure the length and width of your built up shower pan, also taking into consideration any non-square corners. Ideally you would need to cut single, large pieces and screw them into the running boards or concrete slab.
Can a flexible shower pan liner be installed?
Installing a flexible shower pan liner is not beyond the ability of a smart do-it-yourselfer, but there are a few guidelines to help ease the procedure. This article will assume the subfloor of the shower is constructed of plywood, although the same principles apply to concrete flooring where the sloped mortar bed is applied beneath the pan liner.
A subfloor is the layer at the very bottom of your shower pan. Most homes will consist of a standard subfloor constructed of running boards laid over floor joists, a plywood layer over the running boards, or if on a first floor, the subfloor can be a concrete slab.
Can a shower pan be installed on a wood floor?
If you have a wooden floor, you have to be especially careful since any leakage will cause wood rot and fungus growth, which will eventually have to be removed and the entire process started again. There are newer materials that cost a little more but save a lot of time when installing the shower pan.
How do you make a sub base for a shower pan?
To build the sloped sub-base, cut a piece of 15-pound felt to fit the floor area between the bottom plates or the 3/4-inch float guides and staple the felt to the floor. Cut a section of metal lath to the same dimensions. The metal gives the floor a “tooth” for the mortar.
To install the subfloor, whether it is the primary or secondary layer, you will need to accurately measure the length and width of your built up shower pan, also taking into consideration any non-square corners. Ideally you would need to cut single, large pieces and screw them into the running boards or concrete slab.
