Greenhouse Plastic - Medium-Reinforced Grade

Greenhouse Plastic - Medium-Reinforced Grade

Q: Is ~84% light transmission enough for vigorous growth?

Yes. Approximately 84% transmission provides high PAR while preserving strength and lifespan, making it a strong all-around choice.

Q: How long will this film last?

With proper installation and maintenance, up to 4 years under typical outdoor conditions; harsh UV, wind, or chemicals can shorten service life.

Q: What sizing and overlap should I plan for?

Add 12–24 inches per side beyond frame dimensions for fastening. Overlap seams 6–12 inches and tape on the warm side for the best adhesion.

$0.00

FREE SHIPPING

Title

Quantity

Our Medium Grade-Reinforced greenhouse plastic is specifically engineered to serve as a high-performance 10 mil reinforced greenhouse cover with exceptional durability. It features two layers of strong polyethylene enclosing a third layer of molten polyethylene, with heavy-duty polyester string reinforcement embedded between these layers to significantly improve tear resistance and extend the film’s service life. Enhanced with high levels of UV inhibitors, our Medium Reinforced greenhouse plastic is expected to last up to 4 years under typical outdoor conditions and provides 84% light transmission.

Product Specifics

Series: Greenhouse Plastic
Estimated Material Lifespan: 4 years

Free Shipping
Need a Written Quote?
Request Online >
Questions? Call (800) 520-7731

Product Specifications

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

Download Specification Sheet

Medium-Reinforced Grade Greenhouse Plastic

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

Commercial-Grade-Stamp.png__PID:67d8dbd0-d5aa-4ce1-bd0a-5a0ba254b0e7

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:

greenhouse-sizing.jpg__PID:37dafd29-ef57-4f71-a30e-555e5917f52c

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 — Medium-Reinforced Grade: Balanced Strength, High Clarity, Smart Value

This practical guide explains how medium-reinforced greenhouse plastic is built, where it shines, and how to size, install, and maintain it for dependable multi-season results—plus a real-world case study at the end.

What Is Medium-Reinforced Greenhouse Plastic?

Medium-Reinforced Grade greenhouse plastic (10 mil) is engineered for growers who want more toughness than standard film without the weight or cost of heavy-reinforced covers. It uses two strong polyethylene outer layers enclosing a molten PE core, with a polyester string reinforcement grid embedded between the layers for tear control.

Plain-English: it’s clear greenhouse film with a hidden “mesh” that helps stop small nicks from turning into big rips—so you patch less and keep production on schedule.

Key numbers: 10 mil thickness • ~84% light transmission • UV-inhibited • up to 4 years in typical outdoor use • Commercial grade • Made in USA • Non-biodegradable longevity.

Backyard greenhouse covered with medium-reinforced plastic

Backyard greenhouse fitted with 10 mil medium-reinforced film.

Why Choose Medium-Reinforced?

Stronger than standard poly — the internal string grid improves tear resistance at clips and corners.
Lighter & more economical than heavy-reinforced — easier handling for small crews and budget-sensitive builds.
High clarity (~84% transmission) — supports vigorous photosynthesis and uniform canopy growth.
Predictable service life — up to 4 years in typical use with basic care and tensioning.

How the Reinforcement Works (Technical vs. Plain-English)

Technical: two UV-stabilized PE layers + molten PE core encapsulate a polyester string grid that shares load across the sheet. If a puncture occurs, the grid limits propagation, improving dimensional stability and service life.

Plain-English: think of the grid like tiny seatbelts throughout the film—impact energy gets spread out, so damage is localized and repairable.

Hoop house covered with medium-reinforced greenhouse film

Hoop house upgraded to medium-reinforced cover for durability.

Ideal Applications

Community & educational hoop houses that see frequent handling.
Backyard and market-garden tunnels balancing clarity with cost.
Season extension in areas with moderate wind and sun.

Specification Snapshot

Property	Medium-Reinforced Grade	What it means
Construction	Two PE outer layers + molten PE inner with embedded polyester string grid	Reinforcement spreads stress & limits tears.
Thickness	10 mil	Balanced durability and handling weight.
Light Transmission	~84%	High clarity for healthy growth.
UV Stability	High-level UV inhibitors	Maintains clarity & strength across seasons.
Typical Service Life	Up to 4 years	Plan maintenance & replacement cycles with confidence.
Grade / Origin	Commercial • Made in USA	Consistent quality & supply.
End-of-Life	Non-biodegradable	Designed for longevity; follow local recycling/disposal guidance.

Sizing, Overlap & Fit Tips

Measure frame width + arch rise; add 12–24″ per side for fastening and seasonal tensioning.
Overlap seams 6–12″; tape on the warm side for best adhesion.
Tension lightly & evenly—avoid “drum-tight” to limit creep and clip wear.
Shield sharp edges on purlins, doors, baseboards before the pull.

Installation: Step-by-Step

Prep the structure — Deburr contact points; install wiggle-wire channels or battens.
Stage clean — Unroll on a tarp; keep grit off the film.
Pull on a calm day — Center the sheet; align the grid with frame lines.
Secure from center out — Alternate sides in small increments to maintain even tension.
Seal seams — 6–12″ overlaps; use greenhouse-grade tape, pressed firmly on the warm side.
Final check — Trim excess; re-tension after the first warm day.

Pro tip: In gusty regions, add perimeter battens and windbreaks on prevailing-wind sides.

Summer greenhouse operating under medium-reinforced plastic

~84% light transmission supports healthy canopy development.

Care & Maintenance

Quarterly cleaning: lukewarm water + mild soap; soft cloth only (no abrasives/solvents).
Inspect clips & channels: add protective tape where chafe appears.
Repair punctures early: greenhouse repair tape prevents spread; the grid helps localize damage.
Plan replacement: budget on a 4-year horizon in typical sun; harsh UV may shorten life.

Case Study: Community Garden Upgrade from Standard to Medium-Reinforced

Site: 12-plot community garden, temperate climate • Structure: 20′×48′ hoop house • Problem: recurring small tears at clips and door frames with standard single-layer poly.

Scope

Re-skin with 10 mil Medium-Reinforced film (one-piece cover).
Add wiggle-wire channels; smooth edges with vinyl tape at contact points.
Seams overlapped 8″; warm-side taped; even tension from center outward.

Results (after 14 months)

Zero seam failures and no tear propagation at clip points.
Brighter interior from ~84% transmission—stronger seedling starts in spring.
Maintenance time reduced (no mid-season panel swaps); projected life near 4 years.

FAQ: Medium-Reinforced Greenhouse Plastic

How does medium-reinforced differ from heavy-reinforced film?

Medium-reinforced (10 mil) balances durability and handling at a lower weight/cost. Heavy-reinforced is thicker and tougher for extreme sites but is heavier and typically more expensive.

Is ~84% light transmission enough for vigorous growth?

Yes. ~84% provides high PAR while preserving strength and lifespan. Many growers prefer the clarity-to-durability ratio for year-round use.

How long will this film last?

With proper install and basic maintenance, up to 4 years under typical outdoor conditions. High UV, wind, or chemical exposure can shorten life.

What sizing and overlap should I plan for?

Add 12–24″ per side beyond frame dimensions for fastening. Overlap seams 6–12″ and tape on the warm side for best adhesion.

Can I repair punctures?

Yes. Use greenhouse-grade repair tape promptly; the internal reinforcement helps localize damage so small punctures don’t become large tears.

Greenhouse Plastic - Medium-Reinforced Grade

Product Specifics

Product Specifications