Some of the farm crew decided recently that, when it’s time to really settle down and build a house, we’re not gonna go with wood, or brick, or stone, or even the slightly more hip clay and straw mixture for our material. We’re going with plastic!
We’ve been in the hoop house building game for the past few months and, not only are these structures large, clean, open, and bright, they are also cheap and amazingly resilient. I mean, the roof blew off our barn just a few weeks ago but the hoop house that is up behind the barn stayed remarkably intact.
Hoop houses, for those who don’t know, are basically greenhouses without any kind of temperature or humidity controls. They’re meant for animals. We recently built two that are 30ft wide x 108ft long x 16ft high. We’re housing 1000 laying hens inside each one for the winter. They are simple structures of metal hoops, spaced four feet apart down their length with a kind of end wall at the final hoop. A sheet of thick plastic stretches over top and on the ends to create a completely enclosed building that heats up quite nicely with a little sun and the body heat from all the animals.
We had quite a time getting the plastic over the first house. Walker, Zach and I chose a relatively calm day after we’d finished building the basic structure of the house. We unrolled the giant sheet of plastic and tied several ropes to one side so that we could toss them over the hoops and pull the plastic over from the far side. As we were pulling up the sheet, as slight wind began to blow and our hoop house cover became a massive, impermeable sail. Walker and Zach held on for dear life but, since I didn’t have a rope in my hand at that moment, I dove onto the plastic and tried to act as an anchor. For a few minutes I thought we were going to get lifted off the ground but eventually the wind died back down and we were able to pull the plastic over our hoop frame and get it secured before any more big gusts could tear it out of our control.
When chickens and pigs are inside a barn for the winter it’s dark and stale, much less appealing than the bright, warm interior of the hoop houses. They are also large enough that, when spring comes around and it’s time for the animals to move outside, we can use the tractor to clean everything out. My recent blog post about deep bedding the pigs in the barn through the winter also applies to the hoop houses. Chicken and pig manure is too concentrated in nitrogen to make good compost by itself but the added biomass of carbon from the hay we spread in the buildings provides for a great composting milieu.
So far, our experience with these houses has been very positive. They are relatively easy to build (if you have the right tools) and sturdy (though I suppose a few years wear and tear will be the true judge of that). I do hope they work out for the chickens though, because there are a lot of birds strutting about in there and they seem pretty content right now!