Best Greenhouse Covering Plastic for Greenhouse Covering (2026)

We prioritized polyethylene film options with common greenhouse dimensions, 6-mil thickness, UV resistance, consistent user ratings, and overall cost-effectiveness

Top Picks

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Buying Guide

Choose the right thickness

Six-mil (6 mil) film balances durability and light transmission for many home greenhouses; thicker films last longer but can cost more

Check UV resistance

UV-stabilized polyethylene resists breakdown and yellowing in sunlight, extending service life for outdoor greenhouse covers

Match dimensions to your structure

Measure your frame and select a sheet size (for example 12x20, 16x28, or 20x28 options) that provides adequate overlap for secure attachment

Prefer clear for maximum light

Clear polyethylene maximizes light transmission for plant growth; consider diffusing films only if you need to reduce shadows or hot spots

Consider brand and user ratings

Reputable suppliers of greenhouse film and consistent user ratings can indicate reliable material quality and expected longevity