Short answer: Why is PVC foam used in boatbuilding?
PVC foam is a common sandwich core for hulls, decks, partitions and panels because it balances low water uptake, useful shear performance, processability and cost. 🚤
Why does it matter?
The core separates the laminate skins and increases panel stiffness. An unsuitable density or thickness can cause unnecessary weight, print-through, local crushing or excessive resin consumption. Density alone is not a sufficient selection criterion.
Five critical selection criteria
- Density: assessed with compression and shear requirements.
- Thickness: selected for target panel stiffness and connection details.
- Surface treatment: perforated, grooved, grid-scored or plain options affect resin flow and conformability.
- Resin compatibility: confirmed with epoxy, vinyl ester or polyester systems.
- Process: vacuum infusion, hand lay-up and prepreg routes require different processing features.
Review the PVC foam product family and ACT Core PVC Foam, which is designed to reduce resin consumption.
Marine applications
Applications include hulls, decks, superstructures, cabins, hatches, bulkheads and interior panels. Engine beds, hardware attachments and crane foundations may require higher density, inserts or a different core solution.
Frequently asked questions
Does PVC foam absorb resin?
The closed-cell structure limits bulk absorption, but cuts, holes, grooves and surface treatments affect process resin consumption.
Flexible sheet or plain sheet?
Cut or grid-scored sheets can improve drape on curved surfaces. Plain sheets can reduce resin consumption in flat panels.
What should I include in a quotation request?
Specify density, thickness, sheet dimensions, surface treatment, resin system, annual demand and delivery region in the quotation request.