
Installing a plastic cover on a greenhouse is a great way to extend the growing season and protect plants. It is a popular choice for both commercial and hobby growers due to its ease of installation and affordability. When installing a plastic cover, it is important to choose a calm, warm day to ensure the plastic doesn't get loose in the wind and to allow for any temperature-related expansion and contraction of the material. There are several methods for attaching the plastic, including using spring wire, snap clamps, and various hardware components like Poly Lock Channels, which provide a secure and adjustable hold. With the right tools and conditions, growers can effectively install a plastic cover to meet their gardening needs.
Explore related products
What You'll Learn

Choose the right plastic for your greenhouse
The right plastic for your greenhouse depends on several factors, including your location, weather conditions, and the needs of your plants.
Firstly, consider the climate and weather conditions in your area. If you live in a cold climate, a plastic with infrared (IR) properties can help retain heat in the winter. For example, double-layer greenhouse plastic can provide extra insulation during cold nights. Alternatively, if you live in a hot climate, you may want a plastic that allows for more light and airflow to prevent overheating. Additionally, if you experience heavy snowfall or high winds, thicker plastic, such as 6 to 8 mil, is recommended to withstand snow load and resist ripping.
Secondly, the needs of your plants are crucial. Different plant species have varying light, temperature, and moisture requirements. Choose a plastic that complements the specific needs of your plants. For example, some plants may require more sunlight, so you would select a plastic that allows for optimal light transmission. On the other hand, certain plants might need higher humidity, so you would want a plastic that helps regulate moisture levels.
Thirdly, durability and lifespan are essential factors. If you're looking for a long-lasting option, woven plastic or polycarbonate panels are excellent choices. Woven plastic is incredibly strong and puncture-resistant, making it ideal for areas with frequent hail or thunderstorms. Polycarbonate panels are nearly indestructible and can last over ten years. On the other hand, if you're looking for a more affordable, short-term solution, thinner plastics like 4 mil will typically last one growing season.
Lastly, consider additional features that can enhance the functionality of your greenhouse plastic. For instance, anti-drip properties can reduce the risk of plant disease by causing water to run down the sides instead of onto the plants. Anti-dust properties are also beneficial if you plan to use the covering for multiple years, as they reduce dust accumulation, which can decrease light transmission.
In summary, by taking into account your local climate, the needs of your plants, your budget, and the desired lifespan of the plastic, you can select the most suitable option for your greenhouse.
Attaching Decorations to Plastic Fences: Best Practices
You may want to see also
Explore related products

Pick a calm, warm day to install
Picking the right day to install your greenhouse plastic cover is crucial. You should aim for a calm, warm day, with an ideal temperature of around 70 degrees Fahrenheit. This is because the plastic expands and contracts with temperature fluctuations. Installing the cover in warm weather ensures it won't be loose when the weather gets colder, and it reduces the potential for loose plastic when the weather gets hotter.
Working in calm conditions is essential for safety and ease of installation. Even a gentle breeze of 5-10 mph can cause problems, potentially damaging your plastic cover and creating a hazardous situation for anyone on a ladder. A windy day will make it very difficult to get the plastic in the right position, even with multiple people helping.
Warm, calm weather also makes the installation process more comfortable and manageable. You can work from the centre outwards, pulling the plastic taut and minimising friction and dragging. Working in warm weather means you won't have to worry about making adjustments when the temperature rises and the plastic expands.
Additionally, warm temperatures make the plastic more pliable, reducing the risk of it tearing or developing holes. This is especially important if you're using snap clamps or spring wire to attach the plastic, as these methods allow for easy adjustments without damaging the cover.
Boiling Water in Plastic: Safe Methods and Techniques
You may want to see also
Explore related products

Prepare the plastic and the frame
To prepare the plastic and the frame for your greenhouse, begin by unpacking the plastic cover and laying it out in front of the structure. Be cautious during this process, ensuring that you do not overstretch certain segments or drag the plastic across any sharp objects that may cause damage. It is also important to choose a calm day with warm temperatures and no wind, as wind can cause damage to the plastic and create a safety hazard.
Before stretching the plastic over the frame, you should install the appropriate hardware to secure the plastic in place. The most popular method is to use Spring Wire Poly Lock Channel, which typically comes in 4-foot, 6-foot, 8-foot, and 12-foot pieces. This hardware can be used to permanently or semi-permanently secure the plastic, and it is especially useful if your frame includes curved sections. Alternatively, you can use Snap Clamps for temporary attachment or in low-wind environments.
If you are using Spring Wire Poly Lock Channel, ensure that you have the necessary wire included with the product. You can also use double channels, which provide more rigidity and can be attached with TEK screws or bolts and nuts. Additionally, consider using PVC-coated wiggle wire to avoid tearing the plastic with sharp metal edges. Duct tape can also be wrapped around the ends of the poles to prevent punctures.
Once the hardware is in place, you can begin stretching the plastic over the frame. Work from the centre, moving diagonally outwards towards one side, and then repeat on the opposite side. Keep the plastic relatively taut to avoid bunching, and pull it tight before securing the final sections.
Quickly Replace Plastic Sleeves on Blinds
You may want to see also
Explore related products

Attach the plastic to the frame
When attaching the plastic to the frame of your greenhouse, it's important to ensure there is no wind, as even 5-10 mph can cause damage to your plastic covering or pose safety risks. The ideal time to attach the plastic is on a warm, sunny day, as the plastic expands and contracts with temperature fluctuations. Attaching the plastic in warm weather ensures it won't be loose when temperatures drop.
Before stretching the plastic over the frame, install a spring wire channel or "spring lock base channel" along the baseboards and over each end wall. This will help keep the plastic taut and secure.
To attach the plastic, start by securing it to the top of the frame. Work from the bottom to the top, from the middle outwards, securing the individual pieces as you go. This will ensure the end wall skin is tight.
Use spring wire to attach the plastic to the frame. Spring wire allows you to install and remove the plastic without damaging it, so you can make adjustments if needed. Spring wire poly lock channels are available in various lengths, typically sold in six-foot pieces. Ensure you purchase the necessary wire along with the channel.
Another option for attaching the plastic is to use snap clamps, which are ideal for temporary attachments or low wind pressure situations. They are also useful for creating roll-up sides.
Covering Raised Beds: Plastic Protection Guide
You may want to see also
Explore related products

Secure and tighten the plastic
When securing and tightening the plastic of your greenhouse, it is important to ensure that there is no wind, as even 5-10 mph winds can cause issues. You should also cover the ends of the poles with duct tape to avoid poking holes in the plastic.
The most popular method of securing greenhouse plastic is Spring Wire Poly Lock Channel, which can be installed permanently or semi-permanently. Spring Wire allows you to install the plastic without damaging it and make adjustments if needed. Poly Lock Channels typically come in 4-foot, 6-foot, 8-foot, and 12-foot pieces, with 6-foot pieces being the most common due to affordability. When purchasing, ensure that the necessary wire is included.
Another option is to use snap clamps, which are great for temporary attachment or in low-wind conditions. Snap clamps are also useful for creating roll-up sides.
To ensure a tight fit, work from the bottom to the top, starting from the middle and moving outwards to each end. You can use a second layer of wiggle wire in the end wall hoop lock channels to secure the plastic.
For roll-up sides, wrap at least 1 foot of greenhouse film around 3/4 EMT down the length of the greenhouse, and use snap clamps to secure it. Cut off any excess film past 12 inches.
Are Plastic Gloves Enough Protection Against Nair?
You may want to see also
Frequently asked questions
It is best to install a greenhouse plastic cover on a calm, sunny day with temperatures around 70 degrees Fahrenheit. 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 hot.
Spring Wire Poly Lock Channel is the most popular greenhouse plastic attachment hardware on the market. It is used to secure the plastic permanently or semi-permanently, especially if the metal framing of your greenhouse is curved. Snap clamps are another option for temporary attachment or in instances of low wind pressure and stress.
The general process for installing a plastic cover involves first getting the plastic on your tunnel, then attaching the plastic on the ends, and finally attaching the plastic on the sides. It is important to work from the bottom to the top and from the middle out on one side, and then the other.










































