how to install celotex floor insulation on concrete

Preparing the Concrete Floor for Celotex Insulation

Before installing Celotex floor insulation on a concrete floor, it's essential to ensure the surface is level, clean, and dry. Any imperfections or moisture issues can compromise the performance of the insulation and lead to future problems. Start by checking the floor for any cracks or unevenness. If necessary, use a self-leveling compound to create a smooth surface.

Next, clean the floor thoroughly to remove any dirt, oil, or old adhesives. Use a degreaser or a wire brush to remove stubborn stains. Once the floor is clean, allow it to dry completely before proceeding with the installation.

Laying the Celotex Insulation

To begin, cut the Celotex insulation boards to the required size using a sharp utility knife or a saw. Wear protective gloves and eyewear to avoid injury. It's also a good idea to work in a well-ventilated area to prevent inhaling the insulation particles.

Start by laying the first row of insulation along the longest wall of the room, leaving a 10-15mm gap between the board and the wall. Use a spirit level to ensure the board is straight and level. Secure the board to the concrete floor using a suitable adhesive, such as a polyurethane-based adhesive or a specialized insulation adhesive.

Continue laying the remaining rows of insulation, staggering the joints between rows to minimize thermal bridging. Use a tape measure to ensure the boards are evenly spaced and the joints are aligned.

Securing the Insulation and Finishing Touches

Once all the insulation boards are in place, use a foam tape or a sealant to fill the gaps between the boards and the walls. This will help prevent heat loss and air infiltration.

Next, apply a layer of sand or cement-based screed over the insulation, ensuring it's level and even. This will provide a solid base for the final floor finish, such as tiles, carpet, or laminate.

Finally, allow the screed to dry completely before installing the final floor finish. Ensure the floor is fully cured and dry before exposing it to heavy foot traffic or moisture.

By following these steps and taking the necessary precautions, you can successfully install Celotex floor insulation on a concrete floor, reducing heat loss and energy bills while creating a more comfortable and sustainable living space.