Pre Slope Bed Vs Sloped Mud Floor

The most common method for constructing a pre slope is with a mixed cement and sand deck mud that has a consistency that will allow it to be balled up in the palm in your hand.

Pre slope bed vs sloped mud floor.

The setting bed on top on the other hand must be consistently at least 1 1 4 to 1 1 2 thick everywhere follows the slope of the bottom layer and thus sloped. Deck mud is a leveling mortar designed for interior or exterior underlayment. The overall thickness of the mortar depends on a variety of factors. Using a trowel a 2 4 wood piece or even a level you can pack the deck mud up to the desired height all around the shower pan.

However using a mud bed is usually a longer installation process than using pre constructed kits. Typically per foot is the amount of slope required to get the water to cooperate. It is for all types of paver tile and marble installations on floors and counter tops. Under that slope is the pvc liner which is on top of your preslope.

If you are going to start with a preslope here is the how to. If you are using a preformed shower pan the manufacturer of the pan should provide instructions as to how thick the mortar bed needs to be. Your finished flooring after your liner and leading mud bed are set up requires to be 1 to 1 1 4 thick at the drain. The perfect pitch stuff is not really your friend it leaves a weak spot in the mudbed.

Deck mud is a mixture of washed graded sand and portland cement that conforms to astm c 144. If we make the pre incline 3 4 thick at the drain it requires to be a total of 1 1 2 inch thick at all your walls. In addition a higher skill level is needed to install a consistent and necessary slope towards the drain. Start with a solid clean and properly supported shower floor.