How to Install a Hot Mop Shower Pan
A hot mop shower pan is a durable and waterproof solution for your shower floor. It's made by applying a layer of hot asphalt-based mastic to a pre-sloped concrete pan, creating a seamless and waterproof surface. Here's a detailed guide on how to install a hot mop shower pan:
Materials You'll Need:
- Concrete shower pan: This serves as the base for the hot mop. Ensure it's pre-sloped for proper drainage.
- Hot mop mastic: Choose a quality asphalt-based mastic designed for shower pans.
- Felt paper: Used as a barrier between the concrete and the hot mop.
- Fiberglass mesh: Reinforces the hot mop for added durability.
- Liquid waterproofing membrane: This acts as a secondary waterproofing layer and protects the hot mop from damage.
- Primer: Helps the waterproofing membrane adhere properly.
- Safety gear: Gloves, goggles, and a respirator are essential for working with hot materials.
- Tools: A trowel, a hot mop kettle, a brush, and a roller will be needed for application.
Step-by-Step Installation:
1. Prepare the Concrete Pan:
- Clean the concrete pan thoroughly, removing any dirt, debris, or loose materials.
- Ensure the pan is pre-sloped correctly to direct water towards the drain.
- Install the drain in the pan before applying the hot mop.
2. Apply Felt Paper:
- Unroll the felt paper and cut it to fit the dimensions of the shower pan.
- Secure the felt paper to the concrete pan using staples or nails.
3. Heat the Hot Mop Mastic:
- Follow the manufacturer's instructions for heating the hot mop mastic.
- Use a hot mop kettle or a similar device to melt the mastic to the correct consistency.
4. Apply the Hot Mop Mastic:
- Using a trowel, apply a generous layer of the hot mop mastic over the felt paper.
- Ensure the mastic covers the entire surface of the pan.
5. Embed Fiberglass Mesh:
- While the hot mop is still warm, embed the fiberglass mesh into the mastic.
- Use a trowel to press the mesh firmly into the hot mop, ensuring it's completely covered.
6. Apply a Second Layer of Hot Mop Mastic:
- Once the first layer has cooled slightly, apply a second layer of hot mop mastic, embedding the mesh more firmly.
7. Apply the Waterproofing Membrane:
- After the hot mop mastic has cooled completely, apply a primer to the surface.
- Allow the primer to dry before applying the liquid waterproofing membrane.
- Use a brush or roller to apply the membrane, following the manufacturer's instructions.
8. Cure Time:
- Allow the waterproofing membrane to cure completely before proceeding with any further work.
Safety Precautions:
- Hot Mop Mastic is Extremely Hot: Use proper safety gear, including gloves, goggles, and a respirator to prevent burns.
- Ventilation: Work in a well-ventilated area to avoid inhaling fumes from the mastic.
- Fire Hazard: Use caution near open flames or heat sources.
Important Note: It's highly recommended to hire a professional for installing a hot mop shower pan, especially if you're not experienced in working with hot materials. This ensures a safe and properly installed shower pan that will last for years.
