Sika low-expansion gun foam SikaBoom-583 750 ml — Sika PI A PI 583

Sika SikaBoom-583 low-expansion gun foam in a 750 ml can is a one-component polyurethane foam formulated for use with applicator guns. It cures to a closed-cell structure that provides thermal and acoustic insulation and adheres to common building substrates such as concrete, brick, wood and many plastics. The low-expansion formulation controls post-application growth to reduce the risk of deformation around frames and fittings, making it suitable for sealing, filling and insulating joints, gaps and cavities on construction sites and during renovation work.

Advantages

The low-expansion chemistry minimises pressure on surrounding materials during curing, helping to preserve frame alignment and finish quality. The foam delivers reliable adhesion to a variety of substrates and forms a durable, closed-cell structure that resists moisture and offers thermal and sound insulation. Supplied in a 750 ml can designed for use with standard applicator guns, it allows controlled dispensing and reduces waste compared with non-gun foams. Cured foam can be cut, sanded and painted to match site requirements.

Suitable for

• Sealing and insulating gaps around windows and doors
• Filling joints and cavities in masonry and timber constructions
• Thermal insulation of service penetrations and wall junctions
• Acoustic sealing of internal partitions and utility penetrations

Key specifications

• Formulation: one-component low-expansion polyurethane foam
• Can volume: 750 ml (for use with applicator guns)
• Cell structure after curing: predominantly closed-cell
• Performance: designed for sealing, filling and insulating applications
• Adhesion: bonds to common construction substrates including concrete, brick, wood and many plastics
• Workability: can be cut, sanded and painted after curing

How to use

Shake the can before use and attach it to a compatible applicator gun. Apply on clean, dry surfaces; remove loose material, dust and frost. Maintain recommended substrate temperature and humidity for optimal curing. Dispense foam gradually to avoid overfilling; the low-expansion formula reduces excessive growth but allow room for trimming. After partial cure, excess foam can be cut back and finished with appropriate sealants or trims. Follow manufacturer safety instructions regarding ventilation, protective gloves and eye protection during application.

Usage recommendations

For best results when installing windows and doors, apply foam in layers and avoid packing joints too tightly. Protect adjacent surfaces and paint or trim cured foam as needed. Store cans upright in a cool, dry place and use within the shelf life indicated by the manufacturer. Dispose of empty or unused cans following local regulations for pressurised containers.