White polypropylene sand bags, supplied empty, for flood defence and weighting on construction sites, used by contractors and facilities teams.
White polypropylene sand bags, supplied empty, for flood defence and weighting on construction sites, used by contractors and facilities teams.
| BULK DISCOUNT | 100 | 500 |
|---|---|---|
| Price | £0.26 £0.31 | £0.23 £0.28 |
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Log in to access trade discountsWhite polypropylene sand bags are woven synthetic sacks, supplied empty for filling with sand or gravel on site. Each bag holds approximately 12.5kg and closes with a tie string at the mouth. They are used for flood defence and for weighting and ballast on construction sites.
Hessian sandbags start to rot once they stay wet, while heavy duty bags can be more than a short job needs. On site, that means choosing between bags that break down too soon and bags built for long spells outdoors. Standard white polypropylene bags won’t rot like hessian and suit short-term or covered use, as long as they aren’t left in direct sunlight for long periods.
Woven polypropylene: a synthetic weave that holds sand or gravel firmly once filled.
Rot-free fabric: won’t rot in damp conditions the way natural hessian does.
Approx. 12.5kg fill: a manageable weight to lift, carry and stack by hand.
Tie string mouth: closes the bag quickly once filled.
Supplied empty and flat: stores compactly until needed.
Trades and roles
Site managers
Groundworkers
Facilities managers
Highways and traffic management teams
Builders
Maintenance teams
Industries
Construction
Civil engineering
Facilities management
Local authorities
Housebuilding
| Specification | Detail |
|---|---|
| Product name | White Polypropylene Sand Bags 13" x 30" (33cm x 75cm) |
| Product code | POLYBWHT |
| Product type | Polypropylene sand bag, supplied empty |
| Duty | Standard |
| Material | Woven polypropylene |
| Rot resistance | Synthetic fabric, does not rot like natural hessian |
| Sunlight | Breaks down over time in direct sunlight |
| Closure | Tie string at the mouth |
| Fill capacity | Approx. 12.5kg per bag |
| Fill | Sand, gravel or similar, filled on site |
| Waterproof | No |
| Colour | White |
| Size (empty, flat) | 13" x 30" (33cm x 75cm) |
| Base material, tool or condition | Suitability |
|---|---|
| Short-term flood defence at doors and entrances | Suitable |
| Weighting and ballast on construction sites | Suitable |
| Damp conditions | Suitable, the synthetic fabric does not rot like hessian |
| Covered or shaded use | Suitable |
| Polythene sheeting or a tarpaulin behind the wall | Suitable, improves the barrier |
| Long exposure to direct sunlight | Not recommended, polypropylene breaks down over time in sunlight |
| Long-term outdoor defences | Not recommended, choose a heavier duty sandbag |
| Jobs needing a biodegradable bag | Not recommended, use hessian sandbags |
| Watertight seal on their own | Not recommended, sandbags slow water rather than seal it |
| Oil or chemical spills | Not recommended, use a spill kit |
| Lifting by hook or sling | Not recommended, not a lifting bag |
Site managers, builders and facilities teams use white polypropylene sand bags for short-term flood defence and site ballast. Typical settings are construction sites, roadworks and buildings facing a flood warning. They suit jobs measured in days or a few weeks, or where filled bags sit under cover.
Building a short-term sandbag wall across doorways ahead of forecast flooding.
Weighting down temporary signs, barrier feet and fencing on a construction site.
Holding down sheeting and covers over materials.
Diverting surface water away from excavations during a wet spell.
Keeping a store of empty bags under cover for flood season.
Step 1: Fill each bag about half to two-thirds full with sand or gravel, up to approximately 12.5kg.
Step 2: Tie the mouth with the tie string, leaving enough slack to fold the top under.
Step 3: Lay the first row tight together with the tied end facing away from the water, pressing each bag flat.
Step 4: Lay the next row staggered like brickwork, so the joints don’t line up.
Step 5: For a better barrier, lay polythene sheeting or a tarpaulin on the water side before stacking.
Step 6: Remove the bags once the job is done, rather than leaving them in direct sunlight.
Leaving filled bags in direct sunlight for long periods.
Using standard bags for long-term outdoor defences.
Filling bags to the top, so they can’t be shaped and leave gaps.
Lining up joints instead of staggering them.
Expecting a sandbag wall to be watertight.
Each filled bag weighs around 12.5kg, so follow HSE guidance under the Manual Handling Operations Regulations 1992, keep loads close and share repetitive lifting. Flood water can carry sewage and chemicals, so wear waterproof gloves and wash your hands after handling used bags. Check bags that have been outdoors for a while for weakened fabric before moving them.
Store empty bags flat, dry and out of direct sunlight. Check filled bags regularly and replace any that split or show weakened fabric.
Q: What does 13" x 30" mean on a sand bag?
A: It is the size of the empty bag laid flat: 13 inches (33cm) wide and about 30 inches (75cm) long. Once filled and tied, the bag is shorter and thicker.
Q: Do polypropylene sand bags break down in sunlight?
A: Yes. Polypropylene breaks down over time in direct sunlight, so long exposure weakens the fabric. Use these bags for short-term outdoor use, or keep filled bags shaded or covered.
Q: What are these sand bags not suitable for?
A: They are not suitable for long exposure to direct sunlight, long-term outdoor defences, or jobs needing a biodegradable bag. They also aren’t for watertight sealing, oil or chemical spills, or lifting by hook or sling.
Q: Should I choose polypropylene or hessian sand bags?
A: Polypropylene won’t rot when damp, while hessian is a natural fibre that breaks down once wet. Choose hessian where a biodegradable bag is preferred, and polypropylene where rotting is the bigger concern.
Q: How much sand does each bag hold, and how full should I fill it?
A: Each bag holds approximately 12.5kg of sand. Fill it about half to two-thirds full, so you can fold the top under and press it flat into the wall.
Q: Are polypropylene sand bags waterproof?
A: No. The woven fabric lets water through, so a sand bag wall slows and diverts water rather than sealing it. Lay polythene sheeting on the water side for a better barrier.
Q: How should I store white polypropylene sand bags?
A: Keep empty bags flat, dry and out of direct sunlight. Sunlight weakens polypropylene over time, even before the bags are used.
