Secure and Level the Bathtub — Secure the Pan to the Studs
Part of project
How to Install and Level a Shower Pan Base · Step 6 of 8
In this video
Once the tub is set in the mortar, place a level across the top rim (deck) of the tub. Check for level from front-to-back and side-to-side. Make any necessary minor adjustments by pressing on the tub while the mortar is still wet. After confirming the tub is level, secure it in place by driving screws through the pre-drilled holes in the tub's mounting flange directly into the wall studs. This permanently fastens the tub to the house's framing.
Goal: Fasten the tub to the framing and confirm it is level
- Most bathtubs have a built-in slope towards the drain, so leveling the top deck ensures proper drainage.
Used in this video
- Level (brand: Empire, Tool Type: Measuring Tools, Level Size: 24) — Verifying the bathtub is level
- Cordless Drill (Tool Type: Power Tools, Power Source: Battery) — Driving screws to secure the tub flange
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FAQs
Before installing the shower pan, how thoroughly do I need to prepare my subfloor, and what should I look out for?
Ensure the subfloor is clean, dry, and structurally sound. Check for rot, water damage, or uneven spots, repairing them as needed to provide a stable foundation for the mortar bed. A smooth, level subfloor is crucial for the pan's stability and proper drainage.
What's the right consistency for the mortar bed, and how much do I need to mix for a standard shower pan?
The mortar (like SAKRETE 80 lb. Gray Type S Mortar Mix) should be mixed to a thick, peanut butter-like consistency, allowing it to hold its shape without being too wet or crumbly. For a typical 48x32 inch pan, one 80lb bag should be sufficient, but always check the pan manufacturer's recommendations. Ensure even coverage to fully support the pan.
Beyond just using a level, what are the key steps to ensure my shower pan is perfectly level and stable?
Dry-fit the pan multiple times, checking with a long level in all directions (front-to-back and side-to-side). Once in the mortar, apply even pressure and re-check constantly, making micro-adjustments by lightly tapping high spots or adding mortar to low spots if necessary. Ensure the pan has full, even contact with the mortar for stability and proper drainage towards the drain.
What are the critical steps for correctly installing and sealing the drain assembly to prevent leaks?
Apply a generous bead of plumber's putty (like Oatey 9 oz. Stain-Free Plumber's Putty) around the drain flange before seating it firmly into the pan opening. Hand-tighten the nuts from underneath first, then use Channellock pliers for a final snug turn, being careful not to overtighten and crack the pan. Always perform a water test for leaks before proceeding.
Secure and Level the Bathtub — Secure the Pan to the Studs
Part of project
How to Install and Level a Shower Pan Base · Step 6 of 8
In this video
Once the tub is set in the mortar, place a level across the top rim (deck) of the tub. Check for level from front-to-back and side-to-side. Make any necessary minor adjustments by pressing on the tub while the mortar is still wet. After confirming the tub is level, secure it in place by driving screws through the pre-drilled holes in the tub's mounting flange directly into the wall studs. This permanently fastens the tub to the house's framing.
Goal: Fasten the tub to the framing and confirm it is level
- Most bathtubs have a built-in slope towards the drain, so leveling the top deck ensures proper drainage.
Used in this video
- Level (brand: Empire, Tool Type: Measuring Tools, Level Size: 24) — Verifying the bathtub is level
- Cordless Drill (Tool Type: Power Tools, Power Source: Battery) — Driving screws to secure the tub flange
Frequently Asked Questions
Before installing the shower pan, how thoroughly do I need to prepare my subfloor, and what should I look out for?
Ensure the subfloor is clean, dry, and structurally sound. Check for rot, water damage, or uneven spots, repairing them as needed to provide a stable foundation for the mortar bed. A smooth, level subfloor is crucial for the pan's stability and proper drainage.
What's the right consistency for the mortar bed, and how much do I need to mix for a standard shower pan?
The mortar (like SAKRETE 80 lb. Gray Type S Mortar Mix) should be mixed to a thick, peanut butter-like consistency, allowing it to hold its shape without being too wet or crumbly. For a typical 48x32 inch pan, one 80lb bag should be sufficient, but always check the pan manufacturer's recommendations. Ensure even coverage to fully support the pan.
Beyond just using a level, what are the key steps to ensure my shower pan is perfectly level and stable?
Dry-fit the pan multiple times, checking with a long level in all directions (front-to-back and side-to-side). Once in the mortar, apply even pressure and re-check constantly, making micro-adjustments by lightly tapping high spots or adding mortar to low spots if necessary. Ensure the pan has full, even contact with the mortar for stability and proper drainage towards the drain.
What are the critical steps for correctly installing and sealing the drain assembly to prevent leaks?
Apply a generous bead of plumber's putty (like Oatey 9 oz. Stain-Free Plumber's Putty) around the drain flange before seating it firmly into the pan opening. Hand-tighten the nuts from underneath first, then use Channellock pliers for a final snug turn, being careful not to overtighten and crack the pan. Always perform a water test for leaks before proceeding.