What works even better and often free? Bricks, old used bricks that you could probably salvage for, for free in most places. Is there anything commercially available that would cost the same for less the work, for the number of beds your making? But a quick google search tells me that most of those scaffolding boards are chemically treated too, they're made with construction in mind, and most of them seem to have at least some kind of fire retardant on them.īut an 4x8' bed would could cost you 15 per bed, plus hardware to hold it together. Most timber cut(kilned) wood in raised bed walls tends to last anywhere between 3-15 years, depending on weather, the wood itself(pine/spruce) and water, etc, and if you line the beds with a liner.Ī 5iver at 8ft, something that's going to last 5 years plus, that's a fair good deal, depending on how many beds your going to be putting in, anyways. I don't know much about scaffolding boards, but -NEVER- use pressure treated ANYTHING, anywhere near anything your going to eat/drink, yes, because of the chemicals. So to make a long story short(er) and because there are tons of people using untreated scaffolding boards for their raised beds I was hoping somebody would have used them long enough to know when they start to rot in our lovely damp Irish conditions. One of the reasons of growing (some of) our own food is to avoid the food being chemically treated, so this is obviously an issue.Īlso spending twice the amount of money at once is a thing to be considered as well. Looking from that perspective they work out at more or less the same price/year.Īnyway: an obvious downside of treated wood is the possibility of chemicals leaching into the soil and ending up in our food. This being double the price, but also double the thickness and treated so should last at least twice as long. We were thinking of using scaffolding boards (about €5 per 8ft length here in West Kerry, Ireland) but was advised by a guy making polytunnels to use pressure treated 9x2s (€20 per 16ft lengths). We have had mixed success with conventional vegetable beds in the last 10 years, but after seeing the garden being completely waterlogged during last summer and even more so during this winter (so great to see the sun in these last few days!) we have made up our minds that we need some raised beds to hopefully get some better drainage in the beds. We are thinking of building raised beds this year. How long do scaffolding boards last used as raised beds? I did a search but couldn't find this discussed anywhere in precise details:
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