I have a small concrete slab, and I'm planning to put some wooden boards on top to support a small aluminum greenhouse. I'm looking for budget-friendly suggestions because I don't want to break the bank. I have some ground contact 2x4s and some 2x6s for the flooring. My thought was to cut some 4x4s for the corners and use brackets to secure them as joists. I'm not a professional, but I've got tools and I'm willing to get creative—looks don't matter, just need practical ideas!
3 Answers
Make sure that the aluminum frame you've got is compatible with the pressure-treated wood. Some treated woods can react with aluminum, so either check for compatibility or place a barrier between them.
If you're attaching wood to concrete, I suggest using lag bolts to secure treated wood with a hammer drill. Also, consider putting some plastic down as a vapor barrier, though that might not be necessary for a greenhouse.
Good advice, thank you!
Your idea sounds solid! I'd recommend going for 3/4" treated plywood as the flooring and using those 2x6s to frame it up. It’ll give you a nice stable base without costing too much. Just make sure everything is anchored well to the slab.
Thank you!
Thank you! I had no idea about that.