Marine-Grade Spray Foam Blocker 25 Litre
25‑litre marine‑grade spray foam blocker for waterproof sealing in boats, caravans, and outdoor structures. Resists moisture and draughts.
The Marine-Grade Spray Foam Blocker is a 25‑litre professional-grade solution designed for challenging sealing applications in marine and high‑humidity environments. It provides a durable, waterproof barrier against spray ingress, draughts, and moisture, ensuring long-lasting protection for decks, hulls, and cabins.
Key Features
- 25‑litre capacity for extended coverage
- Marine-grade formulation for high moisture resistance
- Suitable for sealing around cables, pipes, and panel joints
- Provides a robust, flexible seal that withstands vibration and movement
- Helps improve thermal insulation and reduce noise transmission
Applications
- Deck and hull sealing on boats and yachts
- Sealing hatches, windows, and door frames in marine structures
- Filling gaps around pipes and conduits in damp locations
- Weatherproofing joints in caravans, motorhomes, and portable buildings
- General waterproofing and draught‑proofing in exposed outdoor settings
Specifications
- Volume: 25 litres
- Grade: Marine‑grade
- Form: Spray‑applied foam blocker
- Primary Use: Waterproof sealing in high‑humidity and marine environments
- Coverage: Suitable for large‑area applications
- Compatibility: Adheres to wood, metal, fibreglass, and most common marine substrates
- Curing: Forms a flexible, closed‑cell barrier that resists water absorption
Ideal for marine trades, boat builders, and outdoor maintenance professionals, this 25‑litre spray foam blocker delivers reliable, waterproof sealing where ordinary sealants may fail. Its generous capacity allows efficient coverage of larger projects, reducing downtime and material waste.
- Deck and hull sealing on boats and yachts
- Sealing hatches, windows, and door frames in marine structures
- Filling gaps around pipes and conduits in damp locations
- Weatherproofing joints in caravans, motorhomes, and portable buildings
- Volume: 25 litre
- Grade: Marine‑grade
- Form: Spray‑applied foam
- Primary Use: Waterproof sealing in marine and high‑humidity environments
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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