ARBOSEAL Pro B3 Gap Filling Foam Gun Grade

ARBOSEAL Pro B3 Gap Filling Foam Gun Grade is a one-component, ready-to-use polyurethane gun foam for a wide range of building applications, including sealing joints and penetrations, thermal and acoustic insulation, and the installation of window and door frames. Its very low curing pressure and moderate post expansion help reduce the risk of deformation in surrounding building elements.

Product Overview

This gun grade PU foam is suitable for professional use where precise application and controlled output are important. It adheres well to most common building materials, including wood, concrete, stone, plaster, metal, PVC and polystyrene, making it a versatile choice for general sealing, filling and insulating tasks on site.

Key Features

• One-component, ready-to-use polyurethane gun foam
• Suitable for window and door frame installation
• Ideal for joint sealing and penetration sealing
• Supports thermal and acoustic insulation applications
• Very low curing pressure helps avoid deformation of building elements
• Moderate post expansion for controlled filling
• Adheres well to wood, concrete, stone, plaster, metal, PVC and polystyrene

Performance Benefits

ARBOSEAL Pro B3 Gap Filling Foam Gun Grade is designed to deliver reliable performance across a broad range of construction details. Its controlled expansion and low curing pressure make it well suited to installations where accuracy matters, while its insulating properties support effective thermal and acoustic sealing within the building envelope.

Technical Specifications

• Tack free time: 6 to 10 minutes
• Cutting time: less than 30 minutes
• Fully cured in joint, 3 x 5 cm at +23 °C: less than 8 hours
• Curing pressure: less than 1 kPa
• Post expansion: less than 80%
• Density in joint: 15 to 19 kg/m³
• Dimensional stability: less than 1%
• Temperature resistance of cured foam: -50 °C to +90 °C
• Reaction to fire classification: F (EN 13501-1)
• Fire class of cured foam: B3 (DIN 4102-1)
• Tensile strength / elongation: greater than 60 / 22 kPa / %
• Compression strength: greater than 5 kPa
• Shear strength: greater than 20 kPa
• Thermal conductivity: 0.033 W/(m·K)
• Sound reduction index Rst,w: 62 dB
• Water vapour permeability: less than 0.06 mg/(m.h.Pa)
• Foam yield in joint, 3 x 5 cm, per 750 ml: 15 m
• Foam yield per 750 ml: 37 l

Applications

This product is suitable for window and door frame installation, joint sealing, penetration sealing and sealing thermal and acoustic insulation boards. It is intended for construction applications where controlled application, dependable adhesion and stable cured performance are required.