Emilie Meyer
Tiling a shower pan can be a straightforward process, but it is important to consider the type of shower pan and tile being used, as well as the desired level of waterproofing. Some people opt for a two-trip process, laying the cement board before the shower base and then tiling after the base is installed. Others choose to tile directly onto the shower pan, using a waterproofing membrane or epoxy grout to prevent leaks. When tiling a shower pan, it is crucial to follow manufacturer instructions and ensure proper bonding and curing of materials.
| Characteristics | Values |
|---|---|
| Shower pan type | Delta 500 Acrylic Shower Pan, Fiberglass Shower Pan, Schluter-Kerdi Membrane, Epoxy Grout |
| Tiling process | Install cement board, use recommended caulk, grind tile for grout line gap, use color-matched caulk for seams, isolate old tile with waterproofing membrane, remove old drain cover, set new grate over existing drain |
| Considerations | Waterproofing, curing time, plumbing access, tile size, grout type, drain system, subfloor |
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What You'll Learn
Using a Delta 500 Acrylic Shower pan
Tiling a shower using a Delta 500 Acrylic Shower pan can be a tricky process, especially for those with no prior experience. The first step is to install Durock just above the shower pan flange. The backer board and the flange are flat, so the tile will sit flat against the wall. However, due to the curvature of the flange, there will be a gap of around 1/4" between the tile and the base, resulting in approximately 1.5" of the tile not adhering to the acrylic pan.
There are a few ways to address this issue. One option is to use a grinder to make a notch in the tile, ensuring it sits flat. If you have a tile saw, you can also cut a notch by following video tutorials. Another option is to use a shim to extend the cement board or Hardie Backer over the shower pan's lip. This method is particularly useful for small tiles, as it provides a place to thinset them in place.
When sealing the tile to the pan, it is recommended to use the caulk supplied by the shower pan manufacturer. You can apply a strip of caulking along the shower pan edge where the tile contacts the Duralok. The caulking helps prevent water or moisture from seeping into the sheetrock.
Additionally, it is important to maintain a consistent grout line gap around the lip of the shower pan. Use colour-matched caulk for the seam/joint where the wall tile meets the shower pan to achieve a neat finish.
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Tiling over an existing shower pan
First, it is important to measure the size of the shower base you plan to use and check with your local supplier to ensure you have the correct size. Cut out the subfloor to accommodate the new shower base, typically requiring a 3/4" cut. Set the new shower base over the opening and install it according to the manufacturer's instructions. Ensure that the shower base is level and secure before proceeding to the next steps.
Before beginning the tiling process, it is crucial to address waterproofing. Proper waterproofing ensures the longevity of your installation. Use a grinder to smoothen out any protrusions on the existing drain flange. Apply a generous amount of thinset around the drain and the grate, pressing the grate firmly into place to create a tight seal. Test-fit your tiles around the grate, adjusting the thinset as needed to ensure an even surface.
When tiling, start from the drain and work your way towards the walls. Ensure that the tiles are pitched slightly towards the drain to allow for proper water runoff. Use modified thin-set mortars to adhere the tiles, allowing ample drying time for the polymers to coalesce and form a strong bond. This drying process can take anywhere from 14 to over 60 days, depending on the materials used.
Once the thinset has cured, complete the job by grouting the tiles and applying a sealer. Follow the manufacturer's instructions for proper sealer application and drying time.
Additionally, consider using products like Kerdi Board, Kerdifix, and Kerdi fix for washers/screws to streamline the installation process and create a smooth, seamless finish. Remember to always follow safety precautions and seek expert advice if you have any doubts during the tiling process.
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Waterproofing
First, prepare the surface by ensuring that the substrate is suitable for waterproofing. The substrate must be completely waterproof because tile and grout don't stop water. One way to do this is by installing a cement backer board, ensuring that the pieces are securely attached to the studs with cement board screws, creating a flat surface.
Next, apply a waterproofing membrane. There are two main types: sheet membranes and liquid-applied membranes. Sheet membranes, such as elastomeric or plastic, are bonded to the substrate with adhesive or thin-set mortar. They are easy to roll out and can be applied directly over a mud-bed assembly. Some sheet membranes also provide soundproofing. Liquid-applied membranes, on the other hand, are more versatile and can be applied over damp concrete for a better bond. They are often used to waterproof the drain area, building a seal that extends in all directions.
After applying the waterproofing membrane, it is important to seal the joints to protect the substrate from water and moisture. Fabric banding can be used at the critical joints around the pan to prevent cracks in the tile and grout.
Before tiling, it is recommended to perform a flood test to ensure that the waterproofing is effective. Plug the shower pan with a cap or test balloon, fill it with water to the curb level or a marked line, and let it sit for a minimum of 24 hours. If the water level doesn't drop (except by evaporation), the pan is waterproof.
Finally, you can proceed with tiling. Apply mortar or thin-set mortar over the dried waterproofing layer and install the tiles according to the manufacturer's instructions.
By following these steps, you can ensure a leak-free, long-lasting shower pan installation.
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Caulking
For showers with existing caulk, removing the caulk is necessary before applying new caulk. For new showers, caulk the shower right after installation using a silicone caulk. Do not use the shower before caulking it. For tiled showers, wait until the grout is fully cured and sealed.
Most types of caulk must be applied when the temperature is between 40 and 80 degrees Fahrenheit. For a clean professional look, tape off the areas where you don't want the caulk to contact. Use a wet finger to smooth out the caulk and remove the tape once caulking is completed.
If you are caulking in conjunction with a new shower installation or a major shower remodel, you may need to obtain a permit. It is recommended to use a caulking tool, which can be purchased at a hardware store or online.
To remove old caulk, brush and vacuum the debris, then clean the area with isopropyl alcohol. When applying new caulk, use 100% silicone and follow the directions on the caulk for drying time before using the shower. Let the caulk dry for at least two to three days, and remove the tape at a 90-degree angle to avoid smearing.
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Grouting
Preparation
Before grouting, it is crucial to ensure that your shower pan and tile installation is done correctly. The Tile Council of North America Handbook provides detailed instructions on preparing shower floors for tile and installing waterproof bathroom tiles, including shower pans, waterproofing membranes, and backer boards for shower walls.
Additionally, always select tiles that are appropriate for the shower floor, as they have a separate rating from wall tiles. Check the specifications to ensure they are rated for wet applications.
When you are ready to begin grouting, follow these steps:
- Use waterproof tape on either side of the corners where tiles meet, then apply a bead of sealant using a sealant gun.
- Apply sealant where the tile meets untiled sections of the wall or floor, as well as fixtures like shower caddies, niches, or shelves.
- If using powdered grout, mix it with water or liquid additives like grout maximizer, grout enhancer, or grout boost. Shake the bag to 'dry-blend' for an even colour spread.
- Be cautious when grouting corners, edges, and areas around the showerhead and faucets due to sharp edges and curves.
- Grout the desired areas and use a damp, non-dripping sponge to remove excess grout.
- After grouting, use a dry, soft cloth or strong paper towel to wipe off any hazy film of leftover grout on the flat sections of the tile.
- Re-apply sealers to your tile and grout regularly to enhance water resistance.
Safety Precautions
Grout vs. Silicone
Some people choose to use silicone instead of grout in certain areas to prevent water seepage. Grout is not waterproof, and while it allows tiny amounts of moisture to escape, it can lead to mould if not properly maintained. Silicone, on the other hand, can trap moisture and also lead to mould if not replaced regularly. The decision between grout and silicone depends on the specific needs of your shower setup.
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Frequently asked questions
Yes, you can tile a shower pan.
There are a few ways to tile a shower pan, depending on the type of pan and tile you are using. One common method is to use a waterproofing membrane, such as the Schluter-Kerdi membrane, to isolate the old tile before setting a new grate over the existing drain.
Yes, it is possible to tile over existing tiles in a shower pan. You will need to use a waterproofing membrane and a thin bed of latex-modified thinset to ensure a good bond between the old and new tiles.
You can use regular grout or epoxy grout for shower pan tiles. Epoxy grout will enhance the waterproofing properties of the grout and reduce the likelihood of leaks.
There are a few ways to waterproof a tiled shower pan, including using a waterproofing membrane or a liner on the subfloor. It is also important to create a small waterproof lip between the tub/shower and the tiled area to prevent water from seeping through.
