Constructing a shower curb is an essential element in any bathroom renovation, serving both functional and aesthetic purposes. It not only provides a waterproof barrier between the shower area and the rest of the bathroom, but also adds a touch of sophistication to the space.
Building a shower curb involves careful planning and precise execution, but it is a task that can be accomplished by DIY enthusiasts with basic construction skills. By following a step-by-step guide, choosing the right materials, and paying attention to detail, you can create a durable and visually appealing shower curb that will last for years to come. In this article, we will provide a comprehensive guide on how to build a shower curb, covering everything from material selection to installation techniques. Embrace the challenge and enhance your bathroom with this practical and stylish addition.
Before embarking on the construction process, it is crucial to select the appropriate materials. The most common choices for shower curbs are concrete, cement board, and ceramic or porcelain tiles. Concrete is a durable and long-lasting option, but requires precise mixing and curing. Cement board is a versatile material that is easy to work with and provides a waterproof base for tiles. Tiles, available in a wide variety of colors and textures, offer endless design possibilities. Once the materials have been chosen, you can begin the step-by-step process of building your shower curb.
Determining the Height of the Curb
The standard height for a shower curb is 2-4 inches (5-10 cm). However, the optimal height for your curb will depend on several factors, including:
- Slope of the shower floor: The curb should be high enough to prevent water from flowing out of the shower, but not so high that it creates a tripping hazard. For a shower floor with a slope of 1/4 inch per foot, a curb height of 2-3 inches is typically sufficient. For steeper slopes, a higher curb may be necessary.
- Type of shower door or curtain: If you are using a frameless glass shower door, you will need a curb that is at least 3 inches high to prevent water from leaking out. For a standard framed shower door or curtain, a 2-inch curb is typically sufficient.
- Personal preference: Ultimately, the height of the curb is a matter of personal preference. Some people prefer a higher curb to keep water contained, while others prefer a lower curb for easier access.
Table: Shower Curb Height Recommendations Based on Shower Floor Slope
| Slope of Shower Floor | Recommended Curb Height |
|---|---|
| 1/4 inch per foot | 2-3 inches |
| 1/2 inch per foot | 3-4 inches |
| 3/4 inch per foot | 4-5 inches |
Selecting Materials for the Curb
The choice of materials for a shower curb plays a crucial role in its durability, functionality, and aesthetics. Here are some key considerations:
Mortar and Tile
Mortar: This is a traditional option that provides a strong and durable curb base. Choose a mortar mix specifically designed for wet environments to prevent cracking and moisture damage.
Tile: Ceramic or porcelain tiles can be used to clad the curb, adding visual appeal and creating a waterproof surface. Select tiles that are rated for bathroom use and have a slip-resistant texture.
Prefabricated Curbs
Concrete: Prefabricated concrete curbs offer a quick and easy installation. They are typically reinforced with steel for added strength and durability.
Plastic: Plastic curbs are lightweight and flexible, making them suitable for irregular surfaces. They are also resistant to moisture and mold.
Other Materials
| Material | Advantages | Disadvantages |
|---|---|---|
| Natural Stone | Durable, unique appearance | Expensive, requires sealing |
| Acrylic | Lightweight, waterproof | Can scratch or dent easily |
Marking the Location of the Curb
Before you can begin building the curb, you need to mark its location. To do this, you will need a level, a tape measure, and a pencil.
- Start by measuring the distance from the back wall of the shower to the front of the curb. This distance will be the length of the curb.
- Mark this distance on the floor with a pencil.
- Next, measure the width of the curb. This distance will be the same as the thickness of the tile that you are using for the curb.
- Mark this distance on the floor, parallel to the first mark.
- Finally, use a level to draw a straight line connecting the two marks. This line will be the outline of the curb.
Building the Curb Form
Once you’ve completed the drain, it’s time to build the curb form. This will create the lip that keeps water from flowing out of the shower.
To build the curb form, you’ll need the following materials:
- 2×4 lumber
- Screws
- Level
- Tape measure
- Pencil
To build the curb form, follow these steps:
1. Cut the 2×4 lumber to length. You’ll need two pieces that are the length of the shower opening, and two pieces that are the width of the shower opening.
2. Assemble the curb form by screwing the pieces of 2×4 lumber together. Make sure that the form is level and square.
3. Place the curb form in the shower opening. The form should fit snugly against the walls of the shower.
4.
Installing the curb form
– Mark the location of the curb form on the subfloor.
– Apply a bead of silicone caulk around the perimeter of the subfloor where the curb form will be installed.
– Set the curb form in place and press it down firmly.
– Secure the curb form with screws driven through the form into the subfloor.
5. Allow the caulk to dry completely before proceeding.
Pouring the Concrete
Now that the form is in place, it’s time to pour the concrete. Here are some tips to ensure a successful pour:
- Mix the concrete according to the manufacturer’s instructions. The concrete should be thick enough to hold its shape, but not so thick that it’s difficult to pour.
- Pour the concrete into the form slowly and carefully. Use a float or screed to level the concrete as you pour.
- Once the form is full, use a trowel to smooth the surface of the concrete.
- Let the concrete cure for at least 24 hours before removing the form.
- After the concrete has cured, apply a sealant to help protect it from moisture and stains.
Finishing Touches
Once the curb is in place, you can add finishing touches to complete the look of your shower. Here are a few ideas:
- Tile the curb with ceramic or porcelain tiles.
- Install a shower curtain rod or tension rod.
- Add a shower door or enclosure.
Finishing the Surface of the Curb
Once the curb has been built and cured, it’s time to finish the surface. This can be done in a variety of ways, depending on the desired look and feel. Here are a few popular options:
1. Tile
Tiling the curb is a classic and elegant option. Tiles come in a wide variety of materials, colors, and patterns, so you can find the perfect match for your bathroom’s décor. To tile the curb, simply apply a layer of thinset mortar to the surface and then press the tiles into place. Once the mortar has dried, grout the tiles to fill in the gaps.
2. Stone
Stone is another popular option for finishing a shower curb. Stone is durable and easy to clean, and it comes in a variety of natural colors and textures. To install stone on the curb, you will need to cut the stone to size and then adhere it to the curb using a thinset mortar or adhesive. Once the mortar has dried, seal the stone to protect it from moisture.
3. Concrete
Concrete is a budget-friendly option for finishing a shower curb. Concrete is durable and easy to install, but it can be difficult to get a smooth finish. To concrete the curb, simply mix concrete according to the manufacturer’s directions and then pour it into the curb form. Once the concrete has set, remove the form and smooth the surface with a trowel. Once the concrete has fully cured, seal it to protect it from moisture.
4. Epoxy
Epoxy is a durable and easy-to-clean option for finishing a shower curb. Epoxy comes in a variety of colors, so you can find the perfect match for your bathroom’s décor. To install epoxy on the curb, simply mix the epoxy according to the manufacturer’s directions and then apply it to the surface using a trowel. Once the epoxy has cured, it will create a smooth and durable finish.
5. Fiberglass
Fiberglass is a lightweight and durable option for finishing a shower curb. Fiberglass is easy to install and can be molded to fit any shape or size. To install fiberglass on the curb, simply apply a layer of fiberglass resin to the surface and then press the fiberglass mat into place. Once the resin has cured, the fiberglass will create a smooth and durable finish.
6. Pebble Tile
Pebble tile is a unique and stylish option for finishing a shower curb. Pebble tile is made from small, smooth pebbles that are adhered to a mesh backing. To install pebble tile on the curb, simply apply a layer of thinset mortar to the surface and then press the pebble tile into place. Once the mortar has dried, grout the pebble tile to fill in the gaps.
Waterproofing the Curb
Waterproofing the shower curb is essential to prevent water damage to the walls and floor. There are several methods for waterproofing the curb, including:
Liner Method
Finishing Touches
Once the curb is in place, you can add finishing touches to complete the look of your shower. Here are a few ideas:
- Tile the curb with ceramic or porcelain tiles.
- Install a shower curtain rod or tension rod.
- Add a shower door or enclosure.
Finishing the Surface of the Curb
Once the curb has been built and cured, it’s time to finish the surface. This can be done in a variety of ways, depending on the desired look and feel. Here are a few popular options:
1. Tile
Tiling the curb is a classic and elegant option. Tiles come in a wide variety of materials, colors, and patterns, so you can find the perfect match for your bathroom’s décor. To tile the curb, simply apply a layer of thinset mortar to the surface and then press the tiles into place. Once the mortar has dried, grout the tiles to fill in the gaps.
2. Stone
Stone is another popular option for finishing a shower curb. Stone is durable and easy to clean, and it comes in a variety of natural colors and textures. To install stone on the curb, you will need to cut the stone to size and then adhere it to the curb using a thinset mortar or adhesive. Once the mortar has dried, seal the stone to protect it from moisture.
3. Concrete
Concrete is a budget-friendly option for finishing a shower curb. Concrete is durable and easy to install, but it can be difficult to get a smooth finish. To concrete the curb, simply mix concrete according to the manufacturer’s directions and then pour it into the curb form. Once the concrete has set, remove the form and smooth the surface with a trowel. Once the concrete has fully cured, seal it to protect it from moisture.
4. Epoxy
Epoxy is a durable and easy-to-clean option for finishing a shower curb. Epoxy comes in a variety of colors, so you can find the perfect match for your bathroom’s décor. To install epoxy on the curb, simply mix the epoxy according to the manufacturer’s directions and then apply it to the surface using a trowel. Once the epoxy has cured, it will create a smooth and durable finish.
5. Fiberglass
Fiberglass is a lightweight and durable option for finishing a shower curb. Fiberglass is easy to install and can be molded to fit any shape or size. To install fiberglass on the curb, simply apply a layer of fiberglass resin to the surface and then press the fiberglass mat into place. Once the resin has cured, the fiberglass will create a smooth and durable finish.
6. Pebble Tile
Pebble tile is a unique and stylish option for finishing a shower curb. Pebble tile is made from small, smooth pebbles that are adhered to a mesh backing. To install pebble tile on the curb, simply apply a layer of thinset mortar to the surface and then press the pebble tile into place. Once the mortar has dried, grout the pebble tile to fill in the gaps.
Waterproofing the Curb
Waterproofing the shower curb is essential to prevent water damage to the walls and floor. There are several methods for waterproofing the curb, including:
Liner Method
The liner method involves installing a waterproof membrane over the curb and extending it onto the walls and floor. The membrane can be made of rubber, vinyl, or plastic. The joints between the membrane and the curb should be sealed with waterproof caulk.
Backer Board Method
The backer board method involves installing a backer board, such as cement board or drywall, over the curb. The backer board should be sealed with waterproof primer and then tiled. The grout should be sealed to make it waterproof.
Liquid Waterproofing Membrane
Liquid waterproofing membrane is a thick, liquid material that is applied to the curb in multiple coats. The membrane dries to form a waterproof seal. It requires a special primer to ensure proper adhesion.
Table: Waterproofing Methods for Shower Curb
| Method | Materials | Advantages | Disadvantages |
|---|---|---|---|
| Liner Method | Waterproof membrane | Highly effective in preventing water damage | Can be difficult to install properly |
| Backer Board Method | Backer board, waterproof primer, tile, grout | Less expensive than liner method | May not be as effective in preventing water damage |
| Liquid Waterproofing Membrane | Primer, liquid waterproofing membrane | Easy to apply, seals cracks and gaps | May require multiple coats for complete waterproofing |
Installing a Threshold
The threshold (also known as the saddle or curb) of your shower is a crucial element that directs water into the drain and prevents leakage into other areas. Installing a threshold involves several essential steps:
1. Dry-Fitting the Base
Place the shower base in its designated spot and mark the outline on the subfloor.
2. Setting the Threshold
Apply a generous bead of construction adhesive around the perimeter of the threshold. Position the threshold on the marks and press it firmly into place.
3. Securing the Base
Apply adhesive to the underside of the shower base and set it into the threshold, ensuring a snug fit.
4. Shimming the Base
If necessary, use shims to level the base and eliminate any gaps between the base and the threshold.
5. Waterproofing the Joint
Apply a waterproof membrane or caulk along the joint between the threshold and the base, sealing it against moisture.
6. Tiling the Threshold
If desired, cover the threshold with tiles to match the shower floor. Use thin-set mortar and grout to secure the tiles.
7. Sealing the Grout
Apply a grout sealer to protect the grout lines from moisture and stains.
8. Finishing Touches
Trim any excess membrane or caulk and inspect the threshold for any leaks or gaps. Ensure the water flows smoothly into the drain by testing the shower.
Grouting the Tiles
Before grouting, remove the tile spacers. Mix the grout according to the manufacturer’s instructions and create a thick enough paste that can hold its shape when applied. Use a grout float to spread the grout over the tiles, pressing it into the gaps between them.
Removing Excess Grout
Use a damp sponge or grout removal tool to remove excess grout from the tiles. Avoid using too much water, as it can weaken the grout.
Finishing and Sealing
After the grout has set for 24-48 hours, use a clean damp sponge to wash the tiles and remove any remaining grout haze. Apply a grout sealer to protect the grout from moisture and stains.
Note: The curing time for grout may vary depending on the type of grout used and environmental conditions.
Spacing and Grout Type
The spacing between tiles affects the amount of grout needed. Wider spaces require more grout. The type of grout also plays a role in the amount of coverage. Cement-based grouts generally have a thicker consistency and cover more area than epoxy grouts.
| Spacing | Grout Coverage |
|---|---|
| 1/8 inch | 250-300 square feet per 10-pound bag |
| 1/4 inch | 150-200 square feet per 10-pound bag |
| 1/2 inch | 100-150 square feet per 10-pound bag |
Sealing the Joints
The final step in building a shower curb is to seal the joints between the curb and the shower pan, as well as any other joints in the curb itself. This will help to prevent water from leaking through the joints and damaging the wall or floor.
Materials:
- Silicone caulk
- Caulk gun
- Utility knife
- Rubbing alcohol
- Paper towels
Instructions:
- Clean the surfaces of the curb and shower pan where the caulk will be applied. Use rubbing alcohol and paper towels to remove any dirt, dust, or oil.
- Cut the tip of the caulk tube at a 45-degree angle. The size of the hole should be about the same as the width of the joint.
- Load the caulk tube into the caulking gun.
- Apply a bead of caulk along the joint between the curb and the shower pan.
- Use your finger or a caulk tool to smooth out the bead of caulk.
- Repeat steps 4 and 5 for all of the joints in the curb.
- Allow the caulk to dry for at least 24 hours before using the shower.
Tips:
- Use a high-quality silicone caulk that is specifically designed for use in wet areas.
- Apply the caulk in a continuous bead, without any gaps or breaks.
- Smooth out the bead of caulk immediately after applying it. This will help to prevent it from sagging or cracking.
- Allow the caulk to dry completely before using the shower. This will help to ensure that it forms a watertight seal.
How To Build A Shower Curb
Building a shower curb is a great way to keep water from leaking out of your shower and into the rest of your bathroom. It’s also a relatively easy project that can be completed in a few hours.
To build a shower curb, you will need the following materials:
- Concrete mix
- Gravel
- 2×4 lumber
- Screws
- Caulk
Once you have gathered your materials, you can follow these steps to build your shower curb:
- Start by creating a form for your curb. This can be done by using 2×4 lumber to create a frame. Make sure that the frame is the same size as the area where you want your curb to be.
- Once you have created the form, line it with gravel. This will help to prevent the concrete from sticking to the form.
- Next, mix the concrete according to the manufacturer’s instructions. Once the concrete is mixed, pour it into the form. Be sure to smooth out the concrete and make sure that it is level.
- Allow the concrete to cure for at least 24 hours. Once the concrete is cured, you can remove the form.
- Finally, caulk the joint between the curb and the shower floor. This will help to keep water from leaking out of the shower.
People Also Ask
How much does it cost to build a shower curb?
The cost of building a shower curb will vary depending on the size of the curb and the materials used. However, you can expect to pay between $50 and $150 for the materials.
How long does it take to build a shower curb?
It will take about 24 hours for the concrete to cure. However, you can start using the shower curb as soon as the concrete is set, which will take about 4 hours.
Can I build a shower curb myself?
Yes, building a shower curb is a relatively easy project that can be completed in a few hours. However, if you are not comfortable working with concrete, you may want to hire a professional.
