Earlier, I wrote about the material’s physical properties under the title “What is greenhouse polycarbonate?” This article will provide a high-level overview of greenhouse polycarbonate installation.
Most people overcomplicate things. Ensure the correct installation of your polycarbonate by following these few guidelines.
Determining how much framework is required to satisfy your area’s snow and wind loads is the primary challenge. Many purlin spacing charts are available from retailers of polycarbonate for greenhouses. The municipal office responsible for issuing permits could also provide this data. The appropriate screw spacing that corresponds with your frame spacing should also be easily obtainable.
The two sides of a multiwall polycarbonate sheet are equally smooth. As suggested in a previous article, you should use sheets with UV protection on one side. When calculating your bill of materials, don’t consider “flipping” the sheets to save on material when cutting angles like you would with plywood or similar materials. In this case, you’ll end up with a piece with the UV coating on the wrong side. The channels or flutes should be installed vertically for optimal performance. This is done so that any condensation in the media can drain out the bottom.
Multiwall polycarbonate requires a few additional items for a complete installation. The H profile is the initial option. The sheets are held together with this. The letter H comes in several varieties. H-shaped letters can have one or two pieces (base and cap). Polycarbonate or metal is used in its construction. Generally speaking, two-part H’s more expensive, but they are significantly simpler to set up on sheets that are more than 12 feet in length. Sheets on either side should be put loosely to make room for the H during installation. The sheets are pulled tight after you have slid your H to the desired height or depth. The aluminum or polycarbonate 2-piece H’s are installed by first screwing through the base into the frame. Next, spread your sheets out along both ends of the floor. The next step is to secure the cap in place. The polycarbonate “H” sections are usually snapped together, and the aluminum top is screwed into the bottom. The H’s will be airtight without the need for sealant.
Next comes the U, sometimes known as the J. This should be placed at both the top and bottom of the sheets. This profile has been designed to prevent debris like dirt, dust, and insects from entering the channels. Small holes (1/8″) should be cut into the U’s bottom roughly every 2′ to facilitate drainage.
After that comes the F-profile section, the corner can be made with this. When this component is unavailable, we occasionally make do by putting U-shaped cuts in the outer edges of our sheets and then butting them tightly together. Polycarbonate ridge profiles are available from several manufacturers.
It’s essential to give your sheets room to breathe when arranging them on a bed. In addition, you should use a drill bit slightly bigger in diameter than the screws you will be using to pre-drill the holes for the screws. A 1″ no bonded washer is an essential component on your screws. Avoid leaks at the screw threads by doing this. Don’t “dimple” your polycarbonate by overtightening the screws.
Corrugated polycarbonate requires foam closures for proper installation. These are multifunctional. They provide a barrier that prevents pests and unwanted visitors to your greenhouses. They are also used on purlins to “sturdy up” the sheets, containing them from collapsing as screws are inserted.
When looking for a material to cover a greenhouse, polycarbonate is a great option. If you follow the above steps, the installation will be quick and straightforward and last for a long time.
Greenhouse sales and installation have been Tammy Wylie’s specialty since 1993. She has two greenhouses of her own right now. Plants are overwintered in a more miniature 8×12 greenhouse. Her 18 x 24 greenhouse serves as a seedling nursery for her annual flower and herb gardens. She uses this greenhouse to conduct usability and efficiency studies on new items. The website http://www.advancegreenhouses.com is her business.
Check out this website for additional details about the product.