Important: Safety and quality standards must be adhered to throughout the entire process.

Specially trained and certified specialist contractors spray polyurethane foam beneath the cellar ceiling

The following instructions are intended as a guide for specialist contractors!

Step 1: Preparation and safety

• Wear personal protective equipment, including safety goggles, gloves and a respirator, to protect yourself from vapours and chemicals in the polyurethane foam.

Step 2: Cleaning and Preparation

• Thoroughly clean the underside of the cellar ceiling to remove dust, dirt and loose particles. Remove any existing damage or cracks and repair them if necessary.

Step 3: Masking and Covering

• Cover the floor and adjacent areas in the cellar with protective sheeting (plastic sheeting or masking tape) to prevent polyurethane foam from getting onto surfaces that are not to be insulated.

Step 4: Preparing the polyurethane foam

• Follow the manufacturer’s instructions to prepare the polyurethane foam spray kit. Ensure that the sprayer is working properly.

Step 5: Spraying the polyurethane foam

• Apply the polyurethane foam evenly to the underside of the cellar ceiling. Start at one end and work your way across systematically.
• Take care to create an even layer, whilst adhering to the recommended layer thickness. Bear in mind that the foam expands as it cures, so precision is important.

Step 6: Fitting protective covers

• Protect light fittings and electrical sockets with special covers to prevent the foam from entering these areas.

Step 7: Curing

• Allow the applied polyurethane foam to cure in accordance with the manufacturer’s instructions. This can take anywhere from a few hours to a day, depending on the specific type of foam.

Step 8: Finishing touches

• Carefully remove the covering material and the protective covers from light fittings and electrical sockets.
• Check the insulated area for any irregularities and ensure that the insulation is even and complete.

Step 9: Cleaning and disposal

• Clean the work area thoroughly and dispose of waste materials in accordance with local regulations and environmental requirements.

Step 10: Inspection and Quality Control

• Carry out a final quality control check to ensure that the insulation has been applied correctly and meets the desired thermal and acoustic insulation targets.

It is important to follow the manufacturer’s instructions for the foam material used exactly and to observe safety precautions throughout the entire process.

The insulation thickness should be at least 100 mm.