Clear Greenhouse Plastic Sheeting 6 mil 18 ft x 20 ft - Durable Cover

In this review the Farm Plastic Supply 6 mil clear greenhouse plastic sheeting is assessed for gardeners and small farmers who need a tough, long-lasting cover that still lets light through. The bottom line: this 18 ft x 20 ft polyethylene film is a practical choice when the priority is durability and UV protection rather than ultra-thin economy plastic. Its construction with anti-aging UV additives and a heavier 6 mil gauge makes it suited to seasonal hoop houses and crop covers where resistance to wind, rain and sun matters.

Key Features

• Durable 6 mil construction: The heavier gauge gives the film resistance to tears and punctures compared with thinner covers, extending useful life in active garden settings.
• Anti-aging UV additives: Built-in UV protection helps slow degradation from sun exposure so the cover lasts longer through multiple seasons.
• Superior light transmission: The clear material distributes daylight evenly inside the structure to support consistent plant growth and temperature balance.
• Multiple applications: Uses include hoop houses, small greenhouses, frost protection, temporary vapor barrier or construction dust wall, making it versatile around the farm or garden.
• Large single roll: The 18 ft by 20 ft dimensions provide a sizable single-piece cover that reduces seams and installation time for medium-size structures.

Who It's For

The sheeting is aimed at home gardeners, market growers, and hobby farms that need a robust greenhouse cover for an 18 ft by 20 ft area or for cutting to fit smaller frames. Those who value longevity and light clarity will appreciate the anti-aging UV treatment and the heavier 6 mil thickness.

If you need a permanently rigid glazing material, a multi-year polycarbonate panel, or a thinner short-term temporary cover, this 6 mil polyethylene film may not be ideal; it is a heavier plastic film rather than a rigid glazing solution.

Pros & Cons

Pros

• Heavy 6 mil gauge offers noticeable durability and resistance to wear compared with thin film options.
• UV additive formulation prolongs usable life under sun exposure, reducing frequent replacement.
• Clear film provides even light transmission to support steady plant growth across the structure.

Cons

• As a plastic film it is not rigid like polycarbonate panels, so it can flap in very high winds unless well secured.

Specifications

Material	Polyethylene plastic sheeting
Gauge / Thickness	6 mil
Dimensions	18 ft x 20 ft
UV Protection	Anti-aging UV additives for extended life
Color / Clarity	Clear (semi-clear appearance)
Typical Uses	Hoop houses, greenhouses, frost protection, vapor barrier, construction covering

Our Verdict

The Farm Plastic Supply 6 mil 18 ft x 20 ft clear greenhouse sheeting is a sensible value pick for gardeners and small farmers who want a durable, UV-resistant cover that still transmits light well. It is worth choosing when longevity and protection from wind, rain and frost are priorities, though those seeking rigid glazing should consider other materials.

Frequently Asked Questions

How long will the UV protection last?
The anti-aging UV additives are designed to extend the film life across seasons, with many users reporting multiple seasons of service depending on local sun intensity.

Can this be used for a hoop house in winter?
Yes, the 6 mil thickness and UV treatment make it suitable for winter protection against cold winds and light frost when properly secured to the frame.

Is the sheet fully clear or tinted?
The film is clear with a semi-clear appearance that provides strong light transmission for plant growth.