Expanding Vac Flood Bag 470 x 520mm (5 Pack)

Fernco Flood Bags are water-activated barrier bags filled with a super-absorbent polymer (SAP), providing a fast, clean and space-efficient alternative to traditional sandbags. Each bag hydrates in minutes to form a firm, mess-free barrier for doorways, thresholds and low-level openings, suitable for both internal and external use. Vacuum-packed for easy storage and transport, the bags are lightweight when dry and expand on contact with water to deliver dependable flood defence that lasts for months.

Benefits

• Each row helps keep around 18cm (˜7") of water out
• Absorbs around 20 litres of water per bag
• Pre-soaked bags expand in about 5 minutes
• Vacuum-packed for easy storage and distribution
• More uniform in size than sandbags for neater barriers
• Multi-functional for indoor and outdoor applications
• Five bags cover about 8.5 ft (˜2.6 m) of floor width

Technical & Usage

• Fill medium: super-absorbent polymer (SAP)
• Dry dimensions (approx.): 12 mm (H) × 520 mm (W) × 470 mm (L)
• Hydrated dimensions (approx.): 200 mm (H) × 520 mm (W) × 470 mm (L)
• Dry weight (approx.): 0.375 kg per bag
• Hydrated weight (approx.): 20–25 kg per bag
• Deployment: submerge/saturate for ˜5 minutes, lay bags side-by-side, then stack a second row across the joints below to form a firm barrier
• Applications: blocking or diverting floodwater; soaking up leaks/spillages in hard-to-reach areas
• Storage: flat-packed, vacuum-sealed; lightweight when dry for easy handling