The idea is very simple, use PVC and plastic sheeting to makeshift a greenhouse environment. There are plenty of designs on the internet if you want something different too. Here’s the first part of the post with plenty of pictures:
“The planning is over and construction on my hoop house greenhouse has begun. I’ve rounded up all of the materials and it looks like I’m going to end up with about $50 in a 165 square ft. green house. Granted I already had most of the materials because I’m an incorrigible pack rat, but even if I had bought everything new just for this polytunnel It would still only come to about $120 $150 – less than a dollar per square ft. Due to the fact that we are in the midst of a global economic meltdown, and the future is a bit uncertain keeping the cost of this project as low as possible is an important consideration.
After some research I’ve decided to build the structure of the hoop house out of 20 ft. joints of three quarter inch PVC plumbing pipe. Some similar greenhouse designs that I’ve run across use 10 ft joints of pipe and then fasten everything together with pipe fittings, but I’m saving quite a bit of cash with the long joints of pipe and by not using any fittings – also overall simplicity is improved. There is one thing though, you can carry 10 ft joints of pipe in the mini van, but hauling 20? pipe requires a truck and preferably a ladder rack. However, you could just cut them in half right at the home improvement store and then put them back together when you get home with the coupling that is built into one end of the 20? long pipe joints – 10? pipe joints don’t have the built in couplers – just go to the home improvement store prepared with a saw or pipe cutter…”