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GoBoard Shower Pan Installation: A Complete Step-by-Step Guide [2026]

So, you're ready to tackle a go board shower pan installation! That's fantastic. Replacing a shower pan can feel like a daunting task, but trust me, with the right guidance, you can absolutely achieve professional-looking results. This step-by-step guide, updated for 2026, will walk you through every stage of the process, ensuring your installation is not only successful but also long-lasting. Consider this your comprehensive roadmap to a beautiful and watertight shower!

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Before you even think about touching the go board, proper preparation is crucial. This step sets the foundation for a smooth and efficient installation.

Gathering Your Tools and Materials

Nothing's more frustrating than being mid-project and realizing you're missing a crucial tool. Here's a comprehensive list of what you'll need for your go board shower pan installation:

• GoBoard Shower Pan Kit: This should include the pan itself, sealant, and any necessary shims.
• GoBoard Sealant: GoBoard sealant is specifically designed to bond GoBoard materials to each other and to other surfaces. It creates a waterproof seal that prevents leaks.
• Measuring Tape: Accurate measurements are essential for a proper fit.
• Level: A level ensures your pan is perfectly balanced for proper drainage.
• Utility Knife: For cutting GoBoard to size, if needed.
• Notched Trowel: For applying thin-set mortar evenly.
• Thin-Set Mortar: Specifically designed for GoBoard or tile installations.
• Mixing Bucket and Paddle: For mixing the thin-set mortar.
• Rubber Mallet: For gently adjusting the pan's position.
• Caulk Gun: For applying sealant around the perimeter of the pan.
• Safety Glasses: Protect your eyes from dust and debris.
• Gloves: Protect your hands from mortar and sealant.
• Dust Mask: To prevent inhaling dust particles when cutting or sanding.
• Clean Rags or Sponges: For cleaning up excess mortar and sealant.
• Pencil or Marker: For marking cut lines and measurements.
• GoBoard Seam Tape: To reinforce seams and corners.
• Shims (if needed): To level the pan if the subfloor is uneven.
• Drain Assembly: Follow the specific instructions for your chosen drain assembly.

Removing the Old Shower Pan

This can be the messiest part of the whole project, so be prepared!

1. Turn off the water supply: Locate the shut-off valves for your shower and turn them off. If you can't find individual shut-off valves, turn off the main water supply to your home.
2. Remove the shower door or curtain: Clear the area around the shower to give yourself plenty of room to work.
3. Remove tiles surrounding the old pan: Use a chisel and hammer to carefully remove the tiles that meet the shower pan. Be careful not to damage the surrounding wall studs.
4. Disconnect the drain: loosen the drain flange (the metal ring that secures the drain to the pan) using a wrench. Then, carefully disconnect the drain pipe from the drain assembly. You may need to cut the pipe if it's corroded or stuck.
5. Break up the old shower pan: Depending on the type of shower pan you have, you may need to break it up into smaller pieces to remove it. Use a hammer and chisel to break the pan into manageable sections. Be careful not to damage the surrounding wall studs or plumbing.
6. Clean the subfloor: Once the old shower pan is removed, thoroughly clean the subfloor to remove any debris, mortar, or old sealant. A clean subfloor is essential for proper adhesion of the new GoBoard shower pan.

Preparing the Subfloor

The subfloor is the foundation for your shower pan. It needs to be clean, level, and structurally sound.

1. Inspect the subfloor: Check for any signs of damage, such as rot, cracks, or water stains. Repair any damage before proceeding.
2. Clean the subfloor: Sweep or vacuum the subfloor to remove any loose debris.
3. Level the subfloor: Use a self-leveling compound to create a perfectly level surface. Follow the manufacturer's instructions carefully.
4. Mark the drain location: Accurately mark the location of the drain on the subfloor. This will ensure that the GoBoard shower pan is properly aligned.

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Now for the fun part: getting that go board shower pan in place!

Dry Fit the Pan

Before you apply any mortar or sealant, it's essential to dry fit the pan. This means placing the pan in the prepared space to check for fit and alignment.

1. Place the pan: Carefully place the go board shower pan in the shower area, aligning it with the marked drain location.
2. Check for level: Use a level to check the pan in multiple directions. If the pan is not level, use shims to raise it until it is perfectly balanced.
3. Mark the perimeter: Use a pencil or marker to trace the outline of the pan onto the subfloor. This will serve as a guide when applying the thin-set mortar.
4. Ensure proper drainage: Pour a small amount of water onto the pan surface to ensure that it drains properly to the drain opening.

Applying Thin-Set Mortar

Thin-set mortar is a cement-based adhesive that bonds the GoBoard shower pan to the subfloor.

1. Mix the mortar: In a clean mixing bucket, combine the thin-set mortar with water according to the manufacturer's instructions. Use a mixing paddle to create a smooth, consistent mixture.
2. Apply the mortar: Using a notched trowel, spread a layer of thin-set mortar evenly over the subfloor within the marked perimeter. The notches in the trowel will help create a consistent thickness of mortar.
3. Position the pan: Carefully lower the go board shower pan onto the mortar bed, aligning it with the perimeter markings.
4. Press firmly: Press down firmly on the pan to ensure that it is fully seated in the mortar. Use a rubber mallet to gently tap the pan into place.

Leveling and Securing the Pan

Getting the pan perfectly level is essential for proper drainage.

1. Check for level: Use a level to check the pan in multiple directions. If necessary, use shims to adjust the pan until it is perfectly level.
2. Secure the pan: Once the pan is level, allow the thin-set mortar to cure according to the manufacturer's instructions. This may take 24-48 hours. Avoid walking on or disturbing the pan during the curing process.

Connecting the Drain

This is a crucial step to ensure a watertight seal. Make absolutely sure you follow the instructions of the drain manufacturer for this part. Generally, the process will look like this: install the drain body by applying plumbers putty under the flange and tightening from underneath.

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With the pan installed, the next step is waterproofing, which is the key to preventing leaks and water damage.

Sealing the Seams and Corners

GoBoard Seam Tape and Sealant are vital components of the GoBoard waterproofing system.

1. Apply sealant: Apply a bead of GoBoard sealant to all seams and corners of the shower pan. Smooth the sealant with your finger or a sealant smoothing tool.
2. Apply seam tape: Apply GoBoard Seam Tape over the sealant, pressing firmly to ensure that it adheres properly. The tape will reinforce the seams and corners, providing an extra layer of protection against leaks.
3. Apply a second layer of sealant: Apply a second layer of GoBoard sealant over the seam tape, smoothing it out to create a seamless finish.

Sealing Around the Drain

The drain is a common source of leaks, so it's important to seal it carefully.

1. Apply sealant: Apply a bead of GoBoard sealant around the drain opening, where the drain assembly meets the shower pan.
2. Smooth the sealant: Smooth the sealant with your finger or a sealant smoothing tool to create a watertight seal.

Curing Time

Allow the sealant to cure completely before proceeding to the next step. Refer to the manufacturer's instructions for recommended curing times, typically 24-48 hours.

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Now for the final touches that will transform your shower.

Installing Tile

Choose tiles that complement your bathroom's overall design.

1. Apply thin-set mortar: Using a notched trowel, apply a layer of thin-set mortar to the GoBoard surface.
2. Set the tiles: Carefully set the tiles into the mortar, using spacers to maintain consistent grout lines.
3. Cut tiles as needed: Use a tile saw to cut tiles to fit around the drain and along the edges of the shower.
4. Allow mortar to cure: Allow the thin-set mortar to cure according to the manufacturer's instructions.

Grouting

Grouting fills the spaces between the tiles, creating a waterproof and aesthetically pleasing surface.

1. Mix the grout: In a clean mixing bucket, combine the grout with water according to the manufacturer's instructions.
2. Apply the grout: Use a grout float to apply the grout to the tile surface, pressing it into the grout lines.
3. Remove excess grout: Use a damp sponge to remove excess grout from the tile surface.
4. Allow grout to cure: Allow the grout to cure according to the manufacturer's instructions.

Caulking

Caulking seals the joints between the tile and the walls, preventing water from seeping behind the tiles.

1. Apply caulk: Apply a bead of caulk to the joints between the tile and the walls.
2. Smooth the caulk: Smooth the caulk with your finger or a caulk smoothing tool to create a clean, professional finish.

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A successful go board shower pan installation relies on the right tools. I highly recommend checking out the PROSOURCE 1/4" x 1/4" Square Notch Trowel. Using the proper notched trowel is essential for achieving the correct mortar thickness, promoting proper adhesion of the pan to the substrate. I also recommend trying the Albion Engineering B12 B-Line Caulk Gun. This is a high-quality caulk gun that provides smooth and consistent application of sealant, reducing fatigue and ensuring a watertight seal.

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Here are some things I've learned installing these pans over the years:

• Mistake: Not properly leveling the subfloor. This creates drainage issues.
  • Solution: Invest in a self-leveling compound.
• Mistake: Using the wrong thin-set mortar.
  • Solution: Use a modified thin set mortar
• Question: How long does it take to install a go board shower pan?
  • Answer: Typically, about a day if you have all the tools and materials ready.

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Congratulations! You've successfully installed your GoBoard shower pan. By following these steps carefully, you've created a durable and watertight shower that will last for years to come. So take a step back and revel in your DIY accomplishment, and get ready to enjoy a completely worry free shower! <br><a href="https://www.amazon.com/s?k=go board shower pan&sort=price-asc-rank&tag=bestbathroomrenovation-20">[Shop Budget-Friendly go board shower pan on Amazon.]</a><br>