Greenhouse Plastic - Heavy-Reinforced Grade

Greenhouse Plastic - Heavy-Reinforced Grade

Q: How does reinforced film compare to standard single-layer poly?

Reinforced film includes a cord grid that increases tear resistance and dimensional stability, helping contain punctures so you can patch instead of replacing entire panels.

Q: Is 12 mil overkill for mild climates?

In mild, protected sites a lighter film can work. Choose 12 mil reinforced when you want a longer service life, fewer repairs, and better resistance to wind and clip wear.

Q: Will 82% light transmission reduce yields?

~82% transmission with good diffusion supports healthy photosynthesis while preserving film durability; many growers see more consistent results over multiple seasons.

Q: How long will it last?

With proper installation in typical conditions, expect at least 4 years of performance. Harsh UV, wind, and chemicals can shorten life; good tensioning and maintenance extend it.

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Our Heavy-Grade Reinforced greenhouse plastic consists of a 3 ply laminate which combines 2 layers of U.V. stabilized co-extruded polyethylene with a high strength cord grid. This 12 mil multi-layer construction provides a robust structure which delivers a high level of tear-resistance and overall material stability in some of the most extreme environments. This plastic provides a light transmission rate of 82% and is designed to perform for at least 4 years when installed in typical conditions.

Product Specifics

Series: Greenhouse Plastic
Estimated Material Lifespan: 4 years

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Product Specifications

This plastic has been engineered to adhere to specific ASTM testing standards. Download and view the testing results below.

Download Specification Sheet

Heavy-Reinforced Grade Greenhouse Plastic

Made in the USA
Commercial Grade
UV Resistant
Non-Biodegradable
Tear & Rip Resistant
High Light Transmission Rate

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All of our greenhouse plastics are commercial-grade and are designed for use in both residential & commercial greenhouse installations. Our greenhouse plastics are designed for years of continuous use in the designated application.

How Are Our Plastics Different?

We only offer commercial-grade greenhouse plastic which is designed specificly for greenhouse installations. Our plastics conform to high quality control standards and are manufactured in the United States not overseas like most of the greenhouse plastics sold online.

Why Purchase a High Quality Greenhouse Plastic?

When building your greenhouse most of the cost of construction is typically put toward labor. Because the plastic acts as the roof of the greenhouse it is very important to not cut corners and choose a plastic that is designed for years of continual use and has been ASTM tested to ensure that the plastic's physical properties are indeed what the seller is claiming. Many "four year plastics" are not engineered to survive four years in real world conditions. Additionally, in a commercial growing application the cost of the plastic is quickly dwarfed by the value of the plants inside. Again, another reason to invest in a high quality plastic.

Compare Our Different Greenhouse Plastics:

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Calculating Greenhouse Plastic Sizes

Download the guide below for help calculating how much greenhouse plastic you will need to cover your greenhouse.

Download Sizing Sheet

Shipping

All Greenhouse Plastic Ships for Free (standard ground, see map)
Expedited shipping only available on orders over $2,000
Call: (800) 520-7731 for pricing and ship times

Shipping estimates shown on the map pertain to this specific product only. Greenhouse plastic orders typically require a 3-5 business day lead time prior to shipment. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.

Other Greenhouse Plastics Available:

Greenhouse Covering Guide

Greenhouse Plastic — Heavy-Reinforced Grade: The Contractor’s Guide to Long-Life, High-Clarity Covers

Updated for growers, contractors, and facilities teams installing durable, UV-stable greenhouse film in tough climates.

Heavy-duty reinforced greenhouse plastic installed on hoop houses — Reinforced film on hoop houses resists wind and wear.

Heavy-Reinforced Grade greenhouse plastic is built for jobs where ordinary film fails. It uses a 3-ply laminate—two layers of UV-stabilized, co-extruded polyethylene bonded around a high-strength cord grid. In plain terms: you get a tough, tear-resistant cover that stays clear and stable through wind, sun, and seasonal stress.

At 12 mil thickness, this multi-layer construction delivers excellent material stability and tear resistance for high-traffic grow sites and exposed hoop houses. With ~82% light transmission, crops get the PAR they need; and when installed under typical conditions, the film is engineered to perform for at least 4 years.

Quick Specs: 12 mil, 3-ply reinforced; ~82% light transmission; UV-stabilized; Made in USA; commercial-grade; tear & rip resistant; non-biodegradable longevity.

How the 3-Ply Reinforced Film Works

Technical: Two UV-stabilized polyethylene (PE) layers are co-extruded and laminated over a corded reinforcement grid. The grid redistributes force so small punctures don’t propagate into long tears, significantly improving tear strength and dimensional stability.

In plain English: Think of it like safety glass for greenhouses. If something nicks the cover, the internal “mesh” helps keep the damage contained so your structure stays protected and crops keep growing.

Key Benefits for Growers & Contractors

Commercial-grade greenhouse covered with heavy reinforced plastic film — Corded grid improves tear resistance & stability.

Built for Real-World Abuse

Tear & Rip Resistant — Reinforced cord grid arrests tears before they spread.
UV-Resistant — Formulated for multi-year clarity and toughness under sun.
Commercial-Grade — 12 mil thickness stands up to handling, clips, and weather.

Better Growing Conditions

~82% Light Transmission — High clarity for strong, even photosynthesis.
Thermal Stability — Multi-layer design resists sagging and wind flutter.

Lower Lifetime Cost

4-Year Performance in typical installs reduces labor & downtime.
Made in USA — Reliable quality and consistent supply.

Technical Specs & Performance

Property	Heavy-Reinforced Grade	What it Means for You
Construction	3-ply laminate (UV-stabilized co-extruded PE + cord grid)	Multi-layer strength and tear suppression in harsh conditions.
Thickness	12 mil	Durable handling, better puncture resistance during install.
Light Transmission	~82%	Strong photosynthetic light for healthy yields.
UV Stability	Yes (UV-resistant)	Maintains strength and clarity through multi-year sun exposure.
Service Life (typical)	≥ 4 years	Fewer replacements; predictable maintenance cycles.
Grade	Commercial; non-biodegradable	Built for continuous operation and long-term structures.
Origin	Made in USA	Consistent quality and availability.

Sizing, Fit & Overlap Tips

Measure frame width + rise on each hoop; add at least 12–24″ per side for fastening and tensioning.
Plan overlaps of 6–12″ at seams; use greenhouse repair tape on the warm side for best adhesion.
Avoid over-tensioning: snug and even is better than drum-tight (prevents creep and clip wear).

Installation: Step-by-Step

Prep the frame — Deburr/shield sharp edges; add wiggle wire channels or batten strips where needed.
Unroll and stage — Keep the film clean; stage on a soft tarp to prevent scuffs and grit.
Lift & drape — On a calm day, pull the sheet centrally over the structure; align the reinforcement grid parallel to the frame.
Tension evenly — Work from center toward ends; clip or wire in small increments to avoid localized stress.
Seal seams — Overlap 6–12″; tape warm side with greenhouse-grade tape; press firmly.
Trim excess — Leave a small allowance for seasonal contraction/expansion; re-check after first warm day.

Pro tip: If high winds are common, add perimeter battens and consider windbreaks on prevailing-wind sides.

Care, Cleaning & Replacement Cues

Inside view of greenhouse with reinforced plastic cover — High clarity for even light and healthy growth.

Clean quarterly with lukewarm water and mild soap; soft cloth only (no abrasives or solvents).
Inspect attachment points for chafe; add protective tape or edging where clips contact film.
Watch for haze or brittleness after multiple seasons; plan replacement near the 4-year mark in harsh sun.
Repair small punctures promptly with greenhouse repair tape to prevent spread.

Case Study: Four-Season Production on Windy Ridge

Location: High-plains vegetable farm (elevation ~5,500 ft) • Structures: Three 30′×96′ hoop houses • Challenge: Frequent 30–45 mph winds, strong UV, and early/late frosts.

Scope

Re-skin all houses with 12 mil Heavy-Reinforced film.
Add continuous wiggle-wire channels and perimeter battens.
Use 8″ overlaps at ridge seams; tape warm side.

Results (after 18 months)

Zero tear-through events despite multiple windstorms (>40 mph gusts).
Improved light quality reported by growers; stronger early-spring starts.
Lower maintenance time—no mid-season panel replacements required.
Forecasted service life ≥ 4 years under site conditions.

FAQs: Heavy-Reinforced Greenhouse Plastic

How does reinforced film compare to standard single-layer poly?

Reinforced film adds a cord grid that drastically increases tear resistance and dimensional stability. Standard films can tear from a small puncture; reinforced tends to contain damage so you can patch and keep growing.

Is 12 mil overkill for mild climates?

If you have low wind, minimal handling, and tight budgets, lighter films can work. Choose 12 mil reinforced when you value longer life, fewer mid-season repairs, and better resistance to clips and edges.

Will 82% light transmission reduce yields?

For most crops, ~82% with good diffusion provides healthy PAR while protecting the film’s strength and life. Many growers find the trade-off improves consistency and extends replacement intervals.

How long will it last?

Under typical conditions and proper install, expect at least 4 years. High-UV, high-wind, or chemical exposure may shorten lifespan; careful tensioning and maintenance extend it.

Greenhouse Plastic - Heavy-Reinforced Grade

Product Specifics

Product Specifications