How To Install A Linear Shower Drain In Concrete Floor

3 min read 23-11-2024

How To Install A Linear Shower Drain In Concrete Floor

Linear shower drains are increasingly popular, offering a sleek, modern look and improved drainage compared to traditional drains. Installing one in a concrete floor, however, requires careful planning and execution. This comprehensive guide will walk you through the process step-by-step.

Planning and Preparation: Laying the Groundwork for Your Linear Drain

Before you even think about breaking out the tools, thorough planning is crucial for a successful installation. This phase involves several key steps:

1. Choosing the Right Linear Shower Drain

The first step is selecting the appropriate linear drain for your shower. Consider the following factors:

Size: Measure your shower carefully to determine the ideal length of the drain. Longer drains handle more water, but you need sufficient space.
Material: Stainless steel is a popular choice for its durability and resistance to corrosion. Other options include brass or PVC.
Grate Style: Choose a grate style that complements your shower's aesthetic. Options range from minimalist slotted grates to more decorative designs.
Drain Capacity: Select a drain with sufficient capacity to handle the water flow from your showerhead(s).

2. Designing Your Shower Pan Slope

Proper slope is essential for effective drainage. The entire shower floor must slope towards the linear drain, typically at a gradient of 1/4 inch per foot. A slight increase in slope near the drain is beneficial. Use a self-leveling compound to achieve the required slope. Achieving this slope accurately is vital.

3. Gathering Your Tools and Materials

You'll need the following tools and materials:

Linear shower drain kit (including drain body, grate, and waterproofing membrane)
Concrete saw or grinder (for cutting the drain opening)
Level
Trowel
Self-leveling compound
Waterproofing membrane (e.g., Schluter-KERDI or similar)
PVC pipe and fittings (for connecting the drain to the plumbing)
Silicone sealant
Safety glasses and gloves

Installation: A Step-by-Step Guide

With your planning complete, it's time to start the installation process:

1. Cutting the Opening for the Linear Drain

Accurately mark the location for the linear drain on the concrete floor, ensuring it aligns with your planned slope. Use a concrete saw or grinder to carefully cut the opening to the exact dimensions specified by the manufacturer. A perfectly sized opening prevents issues later on.

2. Preparing the Drain Body for Installation

Carefully examine the manufacturer's instructions for your specific drain model. Some drains may require additional support or pre-assembly. Most models include a flange for easy and secure embedding within the concrete.

3. Setting the Drain Body and Waterproofing

Apply a layer of silicone sealant around the flange of the drain body. Carefully position the drain body into the opening, ensuring it is level and flush with the concrete. Once securely set, apply a waterproof membrane according to manufacturer's instructions, overlapping the drain body. Creating a seamless seal prevents leaks.

4. Pouring and Leveling the Self-Leveling Compound

Mix the self-leveling compound according to the manufacturer's instructions. Pour the compound into the shower pan, ensuring it covers the entire area and achieves the desired slope towards the drain. Use a trowel to spread the compound evenly and remove air bubbles. Let it fully cure.

5. Installing the Grate

Once the self-leveling compound is completely dry, install the grate onto the drain body. Ensure the grate is securely fastened and level.

6. Connecting the Drain to the Plumbing

Connect the drain pipe to the existing plumbing system using appropriate PVC pipe and fittings. Ensure all connections are secure and leak-free. Always check local plumbing codes to ensure compliance.

Final Steps: Testing and Finishing

Before tiling, you need to test the drain and conduct some final checks:

1. Testing the Drain

Run water through the drain to check for leaks. Thoroughly inspect all connections and the waterproof membrane for any signs of water seepage.

2. Tiling the Shower Floor

Once you're confident the drain is leak-free, you can proceed with tiling the shower floor. Use appropriate thinset mortar and grout for your chosen tiles. Consider using water-resistant grout to further enhance waterproofing.

3. Final Inspection and Grouting

After tiling, inspect the area again to make sure no problems exist. Carefully grout the tiles to complete the installation.

Installing a linear shower drain in a concrete floor is a challenging but rewarding project. Careful planning, attention to detail, and a methodical approach will result in a stylish and functional shower that will last for years. Remember to always consult the manufacturer's instructions for your specific drain model. If you are unsure about any aspect of the installation, it's best to consult a qualified plumber or contractor.