High-Performance Expanding Foam for Gap Filling & Insulation

Seal, insulate and protect with confidence using Soudal Expanding Foam, a professional-quality foam designed for fast, effective filling of gaps, joints and voids. This versatile expanding foam adheres to most common building materials, making it ideal for a wide range of construction, renovation and DIY tasks.

Designed for thermal and acoustic insulation, it provides excellent soundproofing and heat retention once cured. Whether you’re filling cavities, insulating pipework, or securing window and door frames, this expanding foam delivers long-lasting performance both indoors and outdoors. Its moisture-curing formulation expands efficiently to fill voids, then hardens into a durable surface that can be cut, sanded, plastered or painted.

Suitable for all levels of experience, the can features a handheld applicator for accurate, controlled dispensing. Once cured, the foam resists water, heat and ageing, ensuring a robust and stable finish.

Key Features

• High-quality expanding foam for gap filling and insulation.
• Ideal for holes, voids, cracks, pipe insulation and window/door frames.
• Thermal and acoustic insulation properties.
• Adheres to most building materials.
• Moisture-curing and self-expanding.
• Can be cut, sanded, plastered and painted after curing.
• Suitable for internal and external applications.
• Handheld can with applicator tube.

Useful Information

Always wear gloves and goggles when handling expanding foam. Ensure surfaces are clean and slightly damp before use. Shake the can for at least 30 seconds, attach the applicator tube, and dispense foam with the can held upside down—filling gaps only one-third full to allow for expansion. Once cured, foam is not UV resistant and should be covered with paint, plaster or sealant. Clean uncured residue using Soudal Foam & Gun Cleaner. Store upright between +5°C and +25°C.

Soudal Expanding Foam technical data sheet.