Sandbags all look the same once they’re filled and stacked in a wall, but the material inside the weave makes a big difference. If you’re wondering whether poly or burlap holds up longer, here’s the short version: poly bags usually last for years, burlap lasts for months. Which one you pick depends on how long you need the barrier to stay put and how much you care about what’s left behind when the job is over.
Quick Takeaways
- Poly sandbags can last 2–5 years outdoors, especially if UV-treated.
- Burlap sandbags are biodegradable and eco-friendly but usually break down within 12 months.
- Flood barriers, landscaping projects, and construction sites all benefit from different sandbag choices.
What Makes a Poly Sandbag Different?
Poly sandbags are woven from polypropylene, a tough plastic fiber that doesn’t mind water, dirt, or sun. They can be UV-treated for even more staying power outdoors. That’s why cities and emergency crews often stockpile them for flood response—they’ll still be usable after sitting for months in storage. For more details on why UV treatment matters, check our explainer on UV-Resistant Sandbags.
What About Burlap Sandbags?
Burlap sandbags are made from jute, a natural plant fiber. Once woven, that fiber becomes burlap, and it’s completely biodegradable. That’s a big reason landscapers, construction crews, and even pipeline projects use them: they can leave the bags in place, knowing they’ll safely break down over time.
Our article on Biodegradable Sandbags covers more of these eco-friendly uses.
How Long Do They Really Last?
- Poly Sandbags: expect 2–5 years outdoors, longer if stored properly and treated for UV exposure. They resist mold and rot, making them dependable for long-term barriers.
- Burlap Sandbags: count on up to 12 months in typical conditions. Moisture speeds up decomposition, since jute fibers become food for soil organisms.
Handling also affects lifespan. A bag filled too heavy will wear out quicker.
If you’re curious about weights and handling, see our guide on How Much Does a Sandbag Weigh?
For setup basics, we’ve also outlined How to Use Sandbags.
Environmental Differences
Burlap’s biggest advantage is its natural origin. Jute crops grow quickly, need few additives, and the finished bags return to the earth.
Poly bags, on the other hand, stick around much longer. They offer durability but leave behind plastic waste when discarded.
What About Price?
Poly is often cheaper per unit and stretches your money further because of the longer lifespan. Burlap isn’t always the budget option, but many choose it for environmental reasons or because it blends into soil and projects more naturally.
Which Sandbag Should You Pick?
- For Flood prevention – Poly is usually the safer choice for multi-year barriers.
- For Landscaping and erosion control – Burlap is perfect when you want the material to disappear naturally.
- For Pipeline or construction projects – Burlap works well when left underground.
- For Temporary barriers – Either material will work, but burlap is the eco-friendly pick.
Getting The Best Sandbags In Canada Is Easy With St. Boniface
Poly lasts longer, burlap blends in better. It really comes down to your project timeline and environmental priorities. Whether you need tough poly bags for long-term flood control or biodegradable burlap sacks for landscaping, we’ve got options ready to ship. If you’re ordering for a city crew, a contractor fleet, or a large-scale project, ask us about bulk ordering and wholesale pricing to save on cost.
Request a quote today and get the right sandbags for your next job.