Alexei Volkov
Building a greenhouse is a great way to cultivate a wide range of crops and protect plants from harsh weather conditions. When building a greenhouse, one of the most challenging steps is figuring out how to attach the plastic sheeting to the frame. There are several methods for attaching plastic to a greenhouse, and the most suitable method will depend on the frame material, design, and thickness of the plastic. This article will provide an overview of the most common techniques for attaching plastic to a DIY greenhouse, including using PVC clamps, rope, and wood lathes.
| Characteristics | Values |
|---|---|
| Materials | Plastic film, PVC pipes, metal tubing, ground anchors, wooden stakes, zip ties, duct tape, adhesive, rope, PVC clamps, fixed film clips, wood lathes, self-tapping tek screws, spring wire poly lock channel, double channel poly lock |
| Tools | Saw, push brooms, bolt cutters, hacksaw, ladders, scissor lift, safety gear |
| Conditions | Calm day, warm temperatures, sunny day |
| Maintenance | Regular monitoring, repairing tears or damage, brushing off excess snow, protecting from trees or debris |
| Location | South-facing, ample sunlight |
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What You'll Learn
Planning and preparation
Choose the Right Location
Select an area that receives ample sunlight throughout the day. South-facing locations are often ideal as they are exposed to the most sunlight. Ensure the chosen spot provides a stable base for your greenhouse structure. Consider any potential obstacles or hazards nearby, such as trees or debris, which could cause damage to the plastic in the event of harsh weather conditions.
Gather Materials and Tools
The materials you will need include plastic sheeting, PVC pipes or metal tubing for the frame, connectors, ground anchors or wooden stakes, and tools such as a saw, ladder, gloves, goggles, and safety gear. If you plan to use PVC clamps, you can either purchase them or make your own by cutting PVC pipes to the desired size. Tennis balls, push brooms, and bolt cutters or a hacksaw might also be useful.
Determine the Size of Plastic Sheeting
Calculate the amount of plastic sheeting required by considering the dimensions of your greenhouse structure. It is essential to have enough plastic to cover the entire frame, with some overlap for secure attachment.
Prepare the Frame
Construct the frame for your greenhouse using PVC pipes or metal tubing. Cut the pipes to the desired lengths and connect them using PVC connectors to form the arches. Ensure that the frame is sturdy and stable. If using a metal frame, consider anchoring it to the ground to prevent shifting in strong winds.
Choose an Installation Method
Several methods are available for attaching plastic to a greenhouse, including PVC clamps, wood lathes, rope, zip ties, clips, and various hardware options such as Spring Wire Poly Lock Channel with Spring Wire. The chosen method should consider the frame material, design, and thickness of the plastic. Some methods are more suitable for certain scenarios and may require additional hardware.
Prepare for Plastic Attachment
Select a calm, warm day for installing the plastic, as temperature fluctuations can affect the expansion and contraction of the plastic. Gather a team of people to assist, especially if dealing with wind issues. Plan the placement of each person in advance to efficiently secure the corners of the plastic. Have all the necessary tools and safety gear readily available to streamline the process.
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Installation techniques
The installation of plastic on a DIY greenhouse is a process that requires careful planning and the right tools. Here are some detailed techniques to guide you through the process:
Preparation
Before you begin, it is important to plan ahead. Gather the necessary tools, such as ladders, bolt cutters or a hacksaw, push brooms, tennis balls, safety gear, and enough people to help you secure the corners of the plastic. Choose a calm, warm day for installation, as wind can make the process more challenging.
Unrolling the Plastic
When you are ready to begin, start by unrolling the plastic film lengthwise along the structure. Ensure that the label is visible from inside the greenhouse when you attach it. Most plastic films are designed to facilitate proper unfolding as you pull the corners. Take care to work with the wind when unfolding, as it can either help or hinder your efforts.
Lifting and Securing
Once the plastic is unrolled, have two people grab a corner each and begin lifting it over the hoops or frame of the greenhouse. Push brooms or poles with tennis balls on the end can be extremely useful during this step to guide the plastic and protect it from damage. Avoid getting the plastic hung up on corners, boards, or hardware to prevent rips or tears.
Fixing Techniques
There are several methods to fix the plastic to your greenhouse, depending on the frame material and design:
- Clamps: DIY garden hose clamps or PVC clamps can be used to affix the plastic to the hoops. You can make your own clamps by cutting a hose or pipe lengthwise, or you can purchase pre-made PVC clamps with rounded edges to lower the risk of puncturing the plastic.
- Ropes: Ropes can be used to tighten the plastic around the greenhouse, but they may require special hook-ups to hold them in place. Choose a type of rope that does not stretch and can withstand the elements.
- Fixed Film Clips: These clips are comfortable to snap on and off and can be purchased at stores like Walmart.
- Wood Lathes: This method is suitable for a wood-frame greenhouse. Cut wood strips to create long lathes, wrap the plastic around them, and then use screws to secure the plastic in place.
- Metal Framing: If you have a metal frame, you can use Spring Wire Poly Lock Channels attached with Self-Tapping Tek Screws. This method allows for firm attachment and can be shaped to the underlying structure.
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Attaching to metal framing
When it comes to attaching plastic to a metal frame for a DIY greenhouse, there are a few methods to choose from. The most popular method is to use Spring Wire Poly Lock Channels. This method is suitable for those wanting to secure the plastic permanently or semi-permanently to the metal framing, especially if it is curved. The process involves pulling the plastic tight and wiggling the wire back and forth into the channel. Each section of wire is 6.5 feet long, so you will need to cut the wire to size using bolt cutters or a metal saw.
Another method is to use Snap Clamps, which are inexpensive and invaluable for creating roll-up sides. They are, however, only applicable for structures with a set outer. Snap Clamps are simple to use, but they are not a permanent solution unless used on roll-up sides.
You can also attach hardware to the bottom of each hoop and then weave rope back and forth from one side of the structure to the other, which is a low-cost method.
The best time to install the plastic is on a calm, warm day, as the plastic expands and contracts with temperature fluctuations.
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DIY clamps and clips
When it comes to building a DIY greenhouse, there are various methods for attaching the plastic covering. Here are some instructive tips for using DIY clamps and clips to secure the plastic sheeting:
Wiggle Wire and Channels:
Wiggle wire is a popular method for securing greenhouse plastic. It involves using a special type of wire that "wiggles" or bends easily, allowing you to clamp down the poly sheet securely without poking holes in it. This method can be combined with channels, which provide a rigid structure to attach the plastic to. The channels can be attached to the framing using self-tapping Tek Screws, designed to drill through the channel and into the metal.
Snap Clamps:
Snap clamps are another option for DIY greenhouse builders. These reinforced clamps easily snap over plastic film, shade cloth, or tarps to secure them to any type of pipe. They are made of durable and frost-resistant plastic, making them suitable for long-term outdoor use. When using snap clamps, ensure you pull the snap clamp slightly apart before pushing it onto the pipe if there is excess material. For a more permanent solution, you can install a self-tapping screw directly through the snap clamp.
PVC Clamps:
PVC clamps are an affordable option for securing greenhouse plastic. You can purchase PVC pipes from hardware stores like Home Depot and cut them into sections to create DIY clamps. These clamps can be used with batten tape to secure the plastic without damaging it.
Anchoring with Weights:
While not a traditional clamp or clip, weights can be used to secure the plastic sheeting. Dig a small trench around the greenhouse, bury a portion of the plastic on one side, and then place weights on top. Pull the plastic tight on the other side, bury it, and add more weights. However, this method may not be suitable for windy areas, as the weights can be displaced.
Spring Clamps:
Spring clamps are another option for securing the plastic sheeting. These clamps have a spring mechanism that provides tension to hold the plastic in place. However, additional measures may be needed to prevent the entire structure from being blown away by strong winds.
When using any of these methods, it is important to work with a partner and plan the process ahead of time, especially when dealing with windy conditions. Having the necessary tools, such as ladders, gloves, goggles, and push brooms, will make the process safer and more efficient.
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Maintenance and monitoring
Once your DIY plastic greenhouse is set up, there are several maintenance and monitoring practices you should adopt to ensure its longevity and optimal functionality. Here are some detailed instructions:
Regular Inspections: Routinely check your greenhouse for any signs of damage, such as rips or tears in the plastic, especially after harsh weather events. High winds can cause the plastic to flap and rub against the frame, leading to potential tears. Regular inspections will help identify any issues early on.
Prevent Pest Infestations: Regularly inspect your plants for signs of pests or diseases. Pest infestations can lead to plant damage and reduced crop yields. Take preventive measures, such as using pest control methods or natural repellents, to protect your plants and the structural integrity of your greenhouse.
Manage Snow Build-up: If you live in an area with heavy snowfall, it's crucial to brush off excess snow from the greenhouse structure to prevent added weight from causing damage. The weight of snow and ice can strain the plastic and the frame, potentially leading to tears or structural collapse.
Protect from Debris and Trees: Ensure that your greenhouse is located in an area safe from falling trees or debris that could cause damage during weather events. Falling branches or debris blown by strong winds can tear the plastic or damage the frame. Keep the surrounding area clear and trim any overhanging branches.
Storage and Re-installation: When the greenhouse is not in use, you may choose to remove the plastic film to extend its life. However, this requires additional storage space and labour for re-installation. Consider the feasibility of this option, as many farms and gardeners opt to leave the plastic on year-round with proper maintenance.
Maintenance of Frame and Plastic: Keep the frame of your greenhouse clean and free from debris. Regularly inspect the frame for any signs of corrosion or weakness, especially if you've used metal tubing. Additionally, ensure the plastic remains taut and secured to the frame. Use repair tape to fix any small tears or rips that may occur over time.
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Frequently asked questions
It is best to attach plastic to your DIY greenhouse on a calm, sunny, and warm day. This is because the plastic expands and contracts with temperature fluctuations, and installing it in warm weather reduces the potential for loose plastic when the weather gets cold.
You will need the following tools:
- Ladders
- Bolt cutters or a hacksaw
- Push brooms
- Tennis balls
- Safety gear (gloves, goggles, etc.)
Here are some inexpensive methods to attach plastic to your DIY greenhouse:
- DIY PVC clamps
- Fixed film clips
- Wood lathes
- Garden hose clamps
To avoid damaging the plastic, you can use clamps with rounded edges or reinforced edges. You should also avoid pulling the plastic too tightly, as it needs some flexibility to withstand wind and weather conditions.
