We have purchased a tunnel greenhouse with a metal frame and polycarbonate. To increase the roof height a bit, we are going to build a frame of lightweight concrete/leca blocks for the greenhouse to stand on. When googling, you find many others who have done it similarly, but it seems common to have a plank between the greenhouse frame and the leca blocks.
Can you skip the plank and attach the greenhouse directly to the leca block with angle brackets? Or will this cause problems later on? The greenhouse has a perimeter of almost 30 meters, so the cost of wood would not be negligible. Besides, it is probably the wood that will rot over time.
Can you skip the plank and attach the greenhouse directly to the leca block with angle brackets? Or will this cause problems later on? The greenhouse has a perimeter of almost 30 meters, so the cost of wood would not be negligible. Besides, it is probably the wood that will rot over time.
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· Västerbottens län
· 18 051 posts
Three layers of lecablocks and a 50 square meter greenhouse is also a considerable sum. The plank in the picture looks to be pressure-treated, so it won't rot so quickly. But you can certainly place the frame directly on the lecablocks, just be a little extra careful to make it straight, a plank can straighten out some hills and valleys.
Protte
Protte
With aerated concrete screws, there should not be any problems. The question is just how far apart the attachment points are? That is probably why a board is mounted at the bottom, screwed more densely into the lecablocks than there are attachment points in the steel frame.