G-U Low-Expansion Polyurethane Foam

The G-U polyurethane foam is a low-expansion product made in Germany, providing excellent adhesion to all substrates except for Polyethylene (PE), Polypropylene (PP), Teflon (PTFE), and Silicone. It offers excellent insulation with very low secondary expansion, and it does not shrink after hardening. The foam is highly resistant to water and aging but sensitive to UV radiation.

Application Range

Due to its low expansion, it is particularly suitable for installing windows and doors without causing deformation of the frame, for placing wooden stairs and thresholds, for filling gaps, cracks, joints, and openings. It is also suitable for sealing openings in roofs and insulation materials, filling holes around pipes, creating soundproofing baffles, etc.

Shelf Life of Closed Packaging

At least 12 months in spaces with normal temperature and humidity.

Technical Properties

• Volume Change: None
• Foam Expansion: Low
• Density (EN ISO 845): 25 kg/m³
• Flame Retardancy Category (DIN 4102): B3
• Curing Time: approximately 30 minutes
• Application Temperature: +5ºC to +30ºC
• Water Absorption (DIN 53428): 1%
• Elongation at Break (DIN 53571): 25%
• Bending Strength (DIN 53423): 0.7 N/mm²
• Compression Strength (DIN 53421): 0.3 N/mm²
• Shear Strength (DIN 53427): 0.17 N/mm²
• Cutting Time: approximately 40 minutes
• Porosity Structure: approximately 70-80% closed pores
• Thermal Conductivity (DIN 52612): 0.032 W/(mK)
• Full Stabilization Time: approximately 12 hours
• Surface Stabilization Time: approximately 8 minutes
• Removal of frame expansion joints after: approximately 2 hours
• Sound Absorption (DIN 52210): RST,w(C;Ctr)=58(-1;-6)db
• Foam Yield: approximately 35-40 liters/liter in free expansion
• Moisture Transmission Properties (EN ISO 12572): 70 g/m² per 24 hours
• Temperature Resistance: -40ºC to +90ºC (up to +120ºC for a maximum of 1 hour)

Special Bulk Purchase Discount

• Box: -20%

Attention! Chemical Product

Follow the manufacturer's safety instructions