There is no perfect answer to this question. The 1.0 oz GG34 is certainly more durable than the 0.6 oz GG20. This durability increases lifespan but the initial investment is more. Many customers get 2-3 years out of covers but there is no guarantee on lifespan. This article offers a comparison between Gro-Guar…
The ground cover will last a minimum of 5 years fully exposed. While this is its guarantee, it is not uncommon to see 10-15 years of life from this product.
Our UV treated silage tarps are rated for 365 sunny days on both sides. This can help you evaluate how long it will last in your context. To extend the life of the tarp, it is recommended to fold them up and store them out of the weather when not in use.