7 Supplies for Installing Hoop House Plastic and Mounting Hardware

Watching a sudden autumn gust rip a poorly secured sheet of plastic off a hoop house is a heartbreaking rite of passage for many hobby farmers. Investing in the right mounting hardware and film before the winter winds howl is the difference between thriving winter greens and a twisted heap of ruined metal. Here is the ultimate guide to the seven essential supplies needed to lock down greenhouse plastic for seasons of reliable protection.

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Preparing Your Hoop House for Winter Weather

Winter weather tests every structural weakness in a hoop house. Heavy snow loads and high winds will find any loose bolt, sagging bow, or rough edge and exploit it. Before even thinking about pulling plastic, the entire frame must be inspected for structural integrity.

Pay close attention to the ground posts and purlins. Ensure all joints are tight and that the metal bows are perfectly aligned to prevent uneven stress points on the plastic. Any rust on metal pipes must be sanded down and painted with a rust-inhibiting primer to prevent chemical degradation of the film.

Measuring Your Frame Before Buying Plastic

A common rookie mistake is measuring a hoop house frame with a straight tape measure across the ground. To get the actual length of plastic needed, run a flexible tape measure over the curve of the hoop from ground level on one side to ground level on the other. Always add at least two to three feet of extra length to this measurement to allow for securing the film in the lock channels or burying it in a trench.

For the length of the structure, measure from end wall to end wall and add an extra four to six feet. This extra material is crucial for wrapping around the end bows and securing the plastic tightly without overstretching. It is far better to trim off a few feet of excess than to end up six inches short on a windy day.

Greenhouse Film – Sunview 4-Year Clear Plastic

The greenhouse cover is the shield that keeps frost out and warmth in during the coldest months. Standard utility plastic from the local hardware store will degrade and shatter under solar UV rays within a single season. High-quality greenhouse film is engineered to withstand intense sunlight, heavy wind, and temperature fluctuations without losing its clarity or strength.

Sunview 4-Year Clear Plastic stands out because of its multi-layer construction and built-in infrared block. This 6-mil film retains heat overnight by trapping the warm air radiated from the soil, keeping the structure several degrees warmer than single-layer alternatives. Its anti-drip additive prevents condensation from forming large droplets that can block light and drip onto sensitive crops, causing fungal issues.

When ordering this film, keep in mind that it arrives folded and tightly rolled. It requires careful handling during unpacking to avoid punctures on gravel or sharp weeds. This film is ideal for growers seeking a long-term, set-and-forget solution, but it may be overkill for temporary low tunnels that are only covered for a few weeks in spring.

• Thickness: 6 mil (0.15 mm)
• Lifespan: Rated for 4 years of continuous outdoor exposure
• Light Transmission: 90% or higher
• Best For: Year-round hoop houses, high tunnels, and permanent cold frames

Lock Channel – Bootstrap Farmer Aluminum Track

Trying to secure greenhouse plastic with wood furring strips and staples is a recipe for ripped plastic and rotting wood. A dedicated lock channel system provides a continuous, secure grip along the entire length of the frame. It distributes the wind load evenly, preventing the localized stress points that cause tears.

Bootstrap Farmer Aluminum Track is a highly reliable choice for small-scale growers due to its thick, rust-resistant aluminum construction. Unlike cheap steel channels, these aluminum tracks will not rust or degrade over time, protecting both the frame and the plastic from rust stains. The profile is designed with a deep groove that easily holds multiple layers of plastic and shade cloth simultaneously.

Installation requires pre-drilling holes or using self-tapping screws directly into the metal frame. The track is rigid but can be gently bent to match the curve of end bows if needed. This product is perfect for farmers building a permanent structure who want a professional, wind-resistant connection that will last for decades.

• Material: Heavy-duty, rust-free aluminum
• Length: Standard 4-foot sections for easy shipping and handling
• Capacity: Holds up to two layers of plastic plus a shade cloth
• Best For: Securing film to wooden baseboards, metal end bows, and hip boards

Spring Wire – Jiggly Greenhouse Wiggle Wire

Lock channels are useless without the spring wire that snaps inside them to pinch the plastic in place. This wire must be flexible enough to install by hand but strong enough to resist popping out under high wind loads. It acts as a continuous clamp, holding the plastic tight without puncturing it.

Jiggly Greenhouse Wiggle Wire features a thick PVC coating that protects the greenhouse film from friction tears during installation and high winds. The smooth coating also makes it much easier on the hands during the physically demanding process of wiggling the wire into the channel. The spring steel core retains its shape, allowing the wire to be removed and reused multiple times when adjusting the plastic tension.

There is a slight learning curve to installing wiggle wire; pushing it in too hard can pinch fingers, while a loose fit won’t hold. It is essential to match this wire with high-quality aluminum channels to ensure a snug fit. This wire is ideal for anyone who needs to adjust their plastic tension seasonally or swap out winter plastic for summer shade cloth.

• Material: PE/PVC-coated galvanized steel spring wire
• Length: 6.5-foot individual pieces
• Reusability: High, maintains spring tension over multiple seasons
• Best For: High-wind areas and multi-layered plastic installations

Felt Tape – Greenhouse Megastore Anti-Hot Spot

Metal hoop house frames get incredibly hot under the summer sun, often reaching temperatures that can melt or weaken greenhouse plastic. Over time, this localized heat causes the plastic to become brittle and fail prematurely along the contact points with the metal bows. A barrier tape is necessary to insulate the plastic from this intense heat.

Greenhouse Megastore Anti-Hot Spot Tape is a self-adhesive felt tape designed specifically to solve this problem. The thick, durable felt creates a soft, insulating cushion between the metal pipe and the greenhouse film. It features a strong adhesive backing that sticks reliably to galvanized steel, aluminum, and wood, even in damp conditions.

This tape must be applied to clean, dry metal bows before the plastic is pulled over the frame. Applying it to dirty or rusty pipes will cause the adhesive to fail, leading to peeling tape during installation. It is an indispensable investment for growers in hot climates, though less critical for those in permanently cold, overcast regions.

• Material: High-density adhesive-backed polyester felt
• Width: 2 inches (ideal for covering standard 1.315-inch to 1.66-inch pipes)
• Roll Length: 50 feet
• Best For: Hot-dipped galvanized steel frames and wooden rafters

Mounting Screws – Simpson Strong-Tie Hex Screws

The connection between the lock channel and the hoop house frame is under constant shear stress from wind pulling on the plastic. Standard drywall screws or cheap wood screws will shear off or rust out within a season, leading to catastrophic failure. High-quality, corrosion-resistant self-drilling screws are required to create a permanent bond.

Simpson Strong-Tie Hex Head Self-Drilling Screws are engineered for heavy-duty outdoor structural connections. Their self-drilling point easily pierces through aluminum lock channels and galvanized steel pipes without the need for pre-drilling. The hex head design prevents cam-out, allowing the installer to apply maximum torque without stripping the screw head.

When using these screws, it is crucial to use a drill with an adjustable clutch to avoid over-tightening and stripping the threads in thin-walled tubing. They are coated with a proprietary corrosion-resistant finish that far outperforms standard zinc plating. These screws are a must-have for metal-to-metal connections, but are not suitable for securing hardware to soft, rotting wood without pre-drilling.

• Drive Type: 1/4-inch or 5/16-inch Hex drive
• Coating: Quik Guard or galvanized coating for exterior use
• Point Type: Self-drilling (TEK point)
• Best For: Attaching aluminum lock channels to galvanized steel hoops

Repair Tape – Scotch Tough Greenhouse Tape

Even the most carefully installed greenhouse plastic is vulnerable to punctures from falling branches, stray tools, or deer hooves. A small tear can quickly turn into a shredded cover if wind gets inside the hole and starts to pull it apart. Having a dedicated, UV-resistant repair tape on hand is essential for immediate damage control.

Scotch Tough Greenhouse Tape is specifically formulated to withstand the harsh environment of a greenhouse exterior. Unlike standard duct tape, which dry-rots and leaves a sticky residue, this tape features a UV-resistant backing that remains flexible and clear for years. Its aggressive adhesive bonds tightly to polyethylene film, even when exposed to moisture and extreme temperature swings.

For the best results, the plastic must be dry and clean before applying the tape; wiping the area with rubbing alcohol first ensures a permanent bond. It is best applied to both the inside and outside of the tear to sandwich the damaged area. This tape is a vital emergency tool for any hoop house owner, but it should not be used as a primary fastening method during initial construction.

• Width: 1.88 inches to 3 inches
• Adhesive: High-tack, weather-resistant acrylic
• UV Resistance: Rated for multi-year outdoor exposure
• Best For: Patching small tears, reinforcing wear points, and sealing seams

Hex Driver – Malco C-Rex Magnetic Chuck Driver

Installing hundreds of self-drilling screws into metal hoops overhead is exhausting work that requires a reliable driver bit. Standard magnetic nut setters quickly fill up with metal shavings from the self-drilling screws, losing their magnetic grip and causing screws to wobble and fall. A specialized, cleanable magnetic driver saves time and frustration during a long installation day.

The Malco C-Rex Cleanable Reversible Magnetic Chuck Driver solves this common frustration with its innovative design. The magnet can be easily slid back or reversed to quickly wipe away accumulated metal shavings, ensuring a strong grip on every single screw. It features a reversible socket that offers both 1/4-inch and 5/16-inch hex sizes in a single tool, reducing the number of bits needed on the ladder.

This driver is designed for high-torque impact drivers, meaning it won’t shatter under the stress of drilling into heavy-gauge steel. The magnet is powerful enough to hold long screws securely at awkward angles, which is crucial when working overhead on a ladder. It is an essential tool for anyone facing a large-scale installation, though a standard nut setter may suffice for very small, single-afternoon projects.

• Sizes: Reversible 1/4-inch and 5/16-inch hex
• Shank: 1/4-inch quick-change hex shank
• Feature: Cleanable magnet to remove metal debris
• Best For: High-volume installation of self-drilling hex screws

Choosing the Right Day for Film Installation

Pulling greenhouse plastic is a task that cannot be rushed, and the weather will make or break the process. Attempting to install film on a windy day is incredibly dangerous; a 20×40-foot sheet of plastic acts as a massive sail that can easily pull an installer off a ladder. Wait for a day with winds forecasted under five miles per hour, ideally early in the morning when the air is calmest.

Temperature is another critical factor to consider before unrolling the film. If the plastic is installed on a freezing cold day, it will expand and sag when the weather warms up, leading to water pooling and wind flapping. Conversely, installing it in extreme heat can cause it to shrink and pull too tight when temperatures drop, potentially damaging the frame or tearing the plastic. Aim for a mild, sunny day between 50°F and 70°F so the plastic is pliable but not overly stretched.

How to Extend the Lifespan of Greenhouse Film

While high-quality greenhouse film is rated for four years, its actual lifespan depends heavily on how well it is maintained. Keeping the plastic tight is the single most important factor in preventing premature wear. Loose plastic flaps in the wind, which creates friction against the frame and weakens the molecular structure of the polymer. Check the tension of the wiggle wire seasonally and tighten any loose areas.

Regular cleaning also extends the life of the film and improves light transmission for crops. Dust, pollen, and soot from wood stoves can build up on the exterior, blocking light and harboring mold. Wash the plastic annually with a soft brush, mild dish soap, and plenty of water, avoiding harsh chemical cleaners that can degrade the UV inhibitors in the plastic.

Final Inspection Checklist for a Secure Cover

Once the plastic is locked down, a thorough final inspection ensures the structure is ready to face winter storms. Walk slowly around the perimeter of the hoop house, looking for any loose wiggle wire ends that could catch the wind or puncture the plastic. Ensure all lock channels are securely fastened to the frame with no missing screws.

Check the tension of the plastic across the entire roof; it should feel drum-tight when tapped with a hand. Inspect the end walls to make sure the plastic is wrapped securely around the corners with no open gaps where wind can enter. Finally, trim away any excess plastic, leaving about two to three inches hanging past the lock channel to allow for future adjustments.

Securing a hoop house with the right materials is a satisfying investment that pays off in healthy winter crops and peace of mind. By using heavy-duty lock channels, UV-stabilized film, and proper mounting hardware, the structure will easily withstand the worst winter weather. Take the time to prepare the frame, choose a calm day for installation, and enjoy a productive growing season under a secure cover.