Chloe Zhang
Building a greenhouse with PVC pipes and plastic sheeting is a cost-effective way to grow plants all year round. The first step is to construct a sturdy frame using PVC pipes and connectors. Once the frame is complete, drape UV-resistant plastic sheeting over it, ensuring it covers the entire structure. To attach the plastic to the PVC frame, you can use various methods such as snap clamps, zip ties, clips, or large binder clamps. It is important to secure the sheeting at regular intervals without pulling it too tightly, allowing for flexibility in windy conditions. Proper ventilation can be achieved by leaving gaps along the bottom edge of the sheeting or installing vents and windows. Finally, seal any remaining gaps with duct tape or adhesive to improve insulation and maintain a stable temperature for your plants.
| Characteristics | Values |
|---|---|
| Type of plastic | UV-resistant, drip-resistant, economical plastic sheeting |
| Type of PVC | 3/4 PVC |
| Fasteners | Snap clamps, zip ties, clips, ground stakes, duct tape, adhesive, staples, wood laths, screws, binder clamps, cable ties, PVC connectors, glue, snap clamps, rigid strap fasteners, corner braces, zip wall door zippers, PVC primer, poly patch tape, anchoring adhesive |
| Installation tips | Leave gaps for ventilation, seal gaps for insulation, use duct tape or adhesive to seal edges, do not pull plastic too tightly, use treated lumber, double layer the plastic and inflate it |
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What You'll Learn
Using snap clamps
Snap clamps are a very affordable option for securing greenhouse plastic to PVC pipes. They are ideal for securing plastic without using adhesives and are versatile enough to be used in cold frames, row covers, hoop tunnels, and large greenhouses. They are also invaluable for creating roll-up sides on hoop houses, high tunnels, and greenhouses.
Snap clamps are also one of the simplest methods to use for attaching greenhouse plastic to a metal frame. They are compatible with PVC and EMT metal conduit, and can be used for temporary or permanent installations. To install a snap-on clamp, position the materials as desired and angle the clamp so that one end is closer to the frame than the other. Push the end down onto the frame and repeat for the other end of the clamp until it snaps over the pipe.
Snap clamps are only available in standard sizes that fit onto 1.315 OD, 1.66 OD, and 1.90 OD outer diameter tubing. They are not suitable for structures with a different type of tubing. Additionally, snap clamps do not secure the plastic contiguously along the full length of a tube. Instead, they hold the plastic at the point of the clamp, which is only approximately 4 inches in length.
Snap clamps can be purchased pre-made, or you can make your own. When making your own clamps, you may need to attempt making cutouts in several different sizes to determine which size cutout fits best. Ensure that it takes some effort to snap the clamps onto hoops. Smooth the inside edges of the cutout to avoid puncturing the plastic.
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Stapling the plastic
When stapling greenhouse plastic to PVC, it is important to first ensure that the plastic is draped over the PVC frame, with an extra foot or two on the sides to help secure the plastic. The plastic should be centred and tight along the base of the structure.
Next, use staples to attach the plastic to the frame. Space the staples evenly along the frame, focusing on areas where the plastic contacts the frame. It is important to use staples that are specifically designed for use with plastic, as regular staples may not provide a secure hold.
After stapling, you can add an extra layer of security by screwing wood laths or treated 2x4s over the staples. This will help to ensure that the plastic does not pull away from the frame and will also provide additional support.
To further protect the plastic from pulling or tearing, consider using batten tape or duct tape over the staples. This will help to create an airtight seal and improve the insulation of your greenhouse. Proper insulation will maintain a stable temperature and protect your plants from sudden temperature changes.
Finally, inspect your work and trim any excess plastic from around the base of the frame. This will give your greenhouse a neat finish and ensure that the plastic is securely attached to the PVC frame.
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Using zip ties
Zip ties, also known as cable ties, are a great way to secure your greenhouse. They can be used to attach wire racks to the frame, adding rigidity to the structure and keeping your plants securely in place.
To start, you'll need to determine the size of your greenhouse film by measuring the length and width of the structure you wish to cover. Account for the length of the pipes used for the hoops and endwalls. Roll-up sides will require an extra 4 feet of plastic.
Once you have your plastic, begin by unrolling it lengthwise along the structure in the early morning to avoid the wind working against you. Have two people grab a corner of the film and lift it over the hoops, working with the wind to avoid rips. When fully unrolled, the plastic film should have at least 2 extra feet all around the structure on the ground.
Now, you can use zip ties to secure the plastic. Attach the zip ties tightly around the PVC pipes and plastic film, ensuring the plastic is taut and secure. Space the zip ties evenly along the pipes to distribute the tension.
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![20-Pack Greenhouse Clamps for 3/4 Inch PVC Pipe, Greenhouse Film Clamps Shading Net Rod Clip for Garden Net/Row Cover/Greenhouse Plastic [Green]](https://m.media-amazon.com/images/I/71Uq+gXnm0L._AC_UL320_.jpg)
Duct tape or adhesive
When using duct tape or adhesive, it is important to ensure that the surface to which you are applying it is clean, dry, and free of debris. This will help ensure a strong bond and reduce the risk of peeling or failure. Cut the duct tape to the desired length using a sharp knife or scissors, then apply it firmly and smoothly to the surface, pressing down to remove any air bubbles.
Similarly, when using an adhesive, follow the manufacturer's instructions for proper application. This may involve mixing the adhesive with a hardener or activator to activate its bonding properties. Apply the adhesive to the desired area using a caulking gun or putty knife, ensuring that you apply enough pressure to create a strong bond.
It is important to allow the adhesive or duct tape to cure or set completely before exposing it to harsh weather conditions or heavy loads. This will ensure that the bond is at its strongest and reduce the risk of failure.
By properly sealing your greenhouse with duct tape or adhesive, you can create a stable and controlled environment for your plants, protecting them from the elements and promoting their healthy growth.
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Plastic clamps
One type of plastic clamp is the snap clamp, which is a fantastic way to hold panels of plastic in place. They are very affordable and can be used as a temporary solution or in instances where low wind pressure and stress will be applied to the greenhouse plastic. They are also invaluable for creating roll-up sides on hoop houses, high tunnels, and greenhouses. Snap clamps are only available in standard sizes that fit onto 1.315 OD, 1.66 OD, and 1.90 OD outer diameter tubing. They are also only suitable for attaching greenhouse plastic to round tubing.
Another type of plastic clamp is the nylon spring clamp, which is similar to woodworking clamps. These clamps can be challenging to snap on and remove, but they are ideal for securing plastic without using adhesives. They are also versatile and can be used in cold frames, row covers, hoop tunnels, and large greenhouses.
When using plastic clamps, it is important to choose a day with low wind speeds if possible. It is also recommended to have extra hands available to help with the process, especially if dealing with wind issues.
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Frequently asked questions
You will need greenhouse plastic sheeting, snap clamps, zip ties or clips, duct tape or adhesive, ground anchors or wooden stakes, and a rubber mallet.
Drape the plastic sheeting over the PVC frame, ensuring it is centred and covers the entire structure. Use zip ties or clips to secure the sheeting to the frame at regular intervals. Be cautious not to pull the plastic too tightly, as it needs some flexibility to withstand wind and weather conditions.
Use snap clamps to secure the plastic to the front and back ribs of the frame. You may also want to use duct tape or adhesive to seal the edges of the plastic sheeting and close any small holes or gaps for better insulation.
Consider anchoring the frame to the ground using ground anchors or wooden stakes. Drive a U-shaped ground stake through the plastic into the ground every 6 feet along the length of the structure on each side, and insert two more stakes at each end.
Do not install the plastic on a windy or rainy day. Ensure the plastic is the same width as the length of the PVC pipes used for the frame. Avoid pulling the plastic too tightly to allow for flexibility in windy conditions.
