Greenhouse Construction: The Islander-Roof Module Installation greenhouse-construction-part-7-roof-module-installation
GrowerNode™: Web Enabled Control & Sensing for Gardens & Greenhouses
GrowerNode™ Greenhouse Construction: 8x12 'The Islander'
GrowerNode™ is our garden and greenhouse sensing and environmental control system. It’s web browser based for control and sensing of field operation, garden and greenhouses. We are using The 'Islander' is our greenhouse design and perfect to use as a demonstration project.
In Part 6, we looked at more details of the wall framing construction; you can see the finished result in the following pictures, with siding on the walls that don't get much sun. Part 7 is about the installation of the roof modules.
The modular design of our greenhouse system is perfect for DIY (do it yourself) construction, but it also makes it really simple for our crew to construct these when a client wants a turnkey operation. In the above picture, Stew makes the last adjustments to the double 2x6 roof beam which also encloses the large opening skylight that captures a lot of photons (light particles).
The roof construction can be on the tricky side as it is high up and would normally require someone to be up on the roof, which is always a dangerous place to be. With our modular system, each roof section is light enough to be pulled into position by two people safely on the ground. The final securing can be done from a short step ladder, and there is no need to have someone on the roof at all.
The sheathed gable end and double 2x6 roof beams give support for the roof sections, securing it to the structure. You can see the sheathing in place on the gable end, which sits above the doorway in the end wall.
The greenhouse modular roof system uses double 2x4 on 24" centers and it’s very sturdy. It doesn’t need any internal webbing or support, allowing the flow of hot air to escape through the opening skylight in the warmer months. In the following picture, Andy finishes off a roof module by stapling the bubble wrap insulation in between the rafters. In this instance, we used 2x4 set on 16" centers, but we later changed to double 2x4 on 24" centers to make it even more sturdy.
Next, the greenhouse roof module is brought to the back wall and placed upright, with a rope attached to the frame. One person can lift it up from the back while the other person pulls it into place from the front. It goes up with ease, put into final position and locked down from the inside with no need for someone on the roof. Pictured below, you can see it up against the back wall, with the rope in place, ready to be raised.
In just a few hours, we had 3 of the 4 modules in place because they go up fast! One more to go, and then we don't have to worry about the rain anymore. Check out the end result on the next page in this series.
GrowerNode™ Greenhouse Construction Index (The Islander):
Design Build Modular Greenhouse: Part 7: Roof Module Installation (you are here)