PU foam’s lightweight nature (approximately 2-3 lbs/ft³) reduces seismic loads on structures. Its flexibility allows some movement without cracking. In seismic areas, installation should include:
- Proper adhesive selection with appropriate flexibility
- Accommodation for structural movement at joints
- Secure fastening while allowing for differential movement
- Consultation with structural engineers for critical applications
The material itself performs well in seismic conditions when installation accounts for anticipated movements.
