Stockpile Fasteners from ALCO are a better alternative to sandbags and gravel bags. The Symmloc needs fewer units, has a better grip on the cover, is lightweight, and is reusable.
Cost Savings and Quick Access
Cost Saving - Because you use fewer units, the weight required is drastically reduced thus reducing labor, transportation and storage requirements.
Performance - (1) Fastener can hold 124 pounds using 10 mil plastic, compared to (1) 40 pound sandbags that can hold 16 pounds. The fasteners can be used to construct wind resistant seams for long term high wind areas, without the need for expensive weldable materials.
Use Film Covers - High load rating of the fasteners allows you to use less expensive plastic films rather than thicker welded covers. Film covers can be put together in wet or cold conditions unlike welded covers. This will also drastically reduce or eliminate your maintenance compared to seam and cover failures using sandbags.
Quicker Access - Because your cover isn't held down by hundreds or thousands of heavy bags, you can get to your material quickly and easily.