Absolutely not. Hardware store spray foam is typically Open-Cell and low-density (0.5-1.5 lb/ft³). If the fiberglass skin cracks, water will wick through the entire hull structure in days (osmosis and rot). Marine-grade cores must be Closed-Cell with densities above 5 lb/ft³ (80 kg/m³) . Stick to PVC (Divinycell) or SAN (Corecell) specifically rated for marine use. Repairing a waterlogged hull core is a five-figure mistake.
Can I use regular construction foam (PU spray foam) as a structural core for a boat?
- XPS Foam Core
- PET Foam Core
- PVC Foam Core
- PU Foam Core
- PMI Foam Core
- PP Honeycomb Core
- Balsa Wood
- XPS Backer Board
- FRP XPS Sandwich Panel
- FRP PET Sandwich Panel
- FRP PVC Sandwich Panel
- FRP PP Honeycomb Panel
- info@onebondgroup.net
- 0086–15818199755
- whatsapp: +65 91730168
- wechat:15818199755
Contact
- info@onebondgroup.net
- 0086–15818199755
- whatsapp: +65 91730168
- wechat:15818199755
© FOSHAN ONEBOND BUILDING MATERIALS CO.,LTD