- Thread starter
- #921
Just did a quick look at Menards website for contractor garbage bags. Found these...
If my old eyes see the dimensions correctly, each bag is 2 feet 11-3/4 inches (35-3/4 inches) by 4 feet 5-7/8 inches (let's round to 4-1/2 feet). If I cut open that bag, I would have ~36 inches wide by ~9 feet long. Since my raised bed are 4X4 feet 16 inches high, I could cut the garbage bag in half, lengthwise, and have 2 liners each ~18 inches high by 9 feet long. In other words, one garbage bag would line the side walls of each of my raised beds.
Since a box of 15 bags costs $12.82, that comes out to ~$0.85 per bag, or in my case, ~$0.85 per raised bed for a plastic liner. If the 3 mil plastic is thick enough, that might be the ticket. If nothing else, I guess I could double up the plastic to make it 6 mil thick. I see pond liner starts at about 20 mil thick, but I don't have to make the raised bed waterproof, just would want a plastic liner to make the raised bed water resistant on the inside to help protect the wood and maybe get a few more years out of the bed.
Seems like an option to consider. Anyone have any experience and/or thoughts on this approach? Do you ever treat your raised beds, or line them with plastic? If you did, was it worth your time and effort?

If my old eyes see the dimensions correctly, each bag is 2 feet 11-3/4 inches (35-3/4 inches) by 4 feet 5-7/8 inches (let's round to 4-1/2 feet). If I cut open that bag, I would have ~36 inches wide by ~9 feet long. Since my raised bed are 4X4 feet 16 inches high, I could cut the garbage bag in half, lengthwise, and have 2 liners each ~18 inches high by 9 feet long. In other words, one garbage bag would line the side walls of each of my raised beds.
Since a box of 15 bags costs $12.82, that comes out to ~$0.85 per bag, or in my case, ~$0.85 per raised bed for a plastic liner. If the 3 mil plastic is thick enough, that might be the ticket. If nothing else, I guess I could double up the plastic to make it 6 mil thick. I see pond liner starts at about 20 mil thick, but I don't have to make the raised bed waterproof, just would want a plastic liner to make the raised bed water resistant on the inside to help protect the wood and maybe get a few more years out of the bed.
Seems like an option to consider. Anyone have any experience and/or thoughts on this approach? Do you ever treat your raised beds, or line them with plastic? If you did, was it worth your time and effort?