Answering the need for durable, UV-resistant greenhouse coverings, this guide highlights top options around the 20 mil mark or close equivalents. Ideal for serious growers, commercial nurseries, and ambitious hobbyists, these films offer strong tear resistance, UV protection, and weather durability. The selections below emphasize different sizes, thickness levels, and feature sets to match varied environments and budgets.
Overview of the best options at a glance:
| Product | Size | Thickness | Best For | Notes |
|---|---|---|---|---|
| 6 mil Greenhouse Plastic Sheeting (Chicarry) | 20 x 25 ft | 6 mil | Light-duty, quick covers | Hydrophobic anti-drip layer helps prevent plant burn from droplets |
| ZSLTLDU 18 Mil Greenhouse Cover | 20 x 26 ft | 18 mil | Heavy-duty, windy climates | Grommets and reinforced hems for secure anchoring |
| VEVOR Greenhouse Plastic Sheeting | 20 x 100 ft | 6 mil | Long runs, large greenhouses | UV protection for season-after-season use |
| Ansgery 16 Mil Greenhouse Cover | 16 x 20 ft | 16 mil | Clear, lightweight shade-pass-through | UV resistant with reinforced edges |
| ANGAR 16 Mil Heavy Duty Clear Greenhouse Tarp | 20 x 30 ft | 16 mil | Large covers, all-season protection | Three-layer structure with edge reinforcement |
6 mil Greenhouse Plastic Sheeting (Chicarry) 20×25 ft
The 6 mil greenhouse film is made from high-quality polyethylene with a 6 mil thickness. It is designed to be tear resistant and UV resistant for extended use. The product uses 5-layer co-extrusion technology to boost mechanical strength while remaining flexible. An anti-drip hydrophobic surface helps keep droplets from burning plants in strong sun. This sheet is best for smaller to mid-sized greenhouses or as a seasonal cover when heavy-duty durability is not required. Best for hobby growers or temporary replacements.
Best for: Budget-conscious growers; smaller or temporary installations; where anti-drip features reduce leaf burn. Better for short-term seasons or less intense sun exposure.
Caution: The film may appear hazy due to the anti-drip layer; while it reduces rain droplets, it slightly reduces clarity of light transmission.
ZSLTLDU 18 Mil Greenhouse Cover 20×26 ft
This heavy-duty 18 mil greenhouse cover uses double-layer woven polyethylene for durability. It provides good resistance to punctures, wind, rain, and cold temperatures, making it a solid choice in harsher climates. UV inhibitors extend the life of the tarp in sun-exposed environments, and reinforced grommets with sturdy hems help keep the cover secure in windy conditions. Best for larger or high-wind settings where long-lasting protection is essential.
Best for: Windy regions; year-round protection; installations requiring durable edges. Choose this if you need extra tear resistance and edge stability.
Caution: Heavier fabric means less flexibility than thinner films; installation may require more effort and stronger anchoring in very windy sites.
VEVOR Greenhouse Plastic Sheeting 20×100 ft
The VEVOR greenhouse film measures 20 feet by 100 feet and is 6 mil thick. It is designed to be tear-resistant and UV-protected for long-term use in large-scale operations. The film helps maintain warmth in cooler weather and reduces dust accumulation on plant surfaces, supporting steady growth. Best for expansive greenhouses or hoop houses that require cost-effective, long runs.
Best for: Large-scale operations; extended coverage with a cost-efficient option. Choose this for long stretches without frequent replacements.
Caution: 6 mil thickness may be less rugged in extremely storm-prone areas; ensure proper anchoring and tension to prevent wind flapping.
Ansgery 16 Mil Greenhouse Cover 16×20 ft
This 16 mil clear tarp is built with three-layer woven polyethylene and reinforced edges for durability and tear resistance. The film passes ample natural daylight, supports even temperature distribution, and offers UV resistance. It includes rust-proof grommets every 18 inches and reinforced corners for stable installation. Best for medium-sized greenhouses needing clear, durable cover with reliable edge strength.
Best for: Users who want clear, bright light transmission with solid edge reinforcement. Choose this if you need balanced light and durability without opting for ultra-heavy films.
Caution: Slightly heavier than thin films; ensure frame and anchors support the added weight in windy areas.
ANGAR 16 Mil Heavy Duty Clear Greenhouse Tarp
This 16 mil tarp uses a three-layer thickened polyethylene construction with a woven external layer for durability. It features reinforced edges and rope-wrapped hems, plus rust-proof aluminum washers at each hole, ensuring strong attachment and edge stability. Clear, light-permeable, and waterproof, it helps maintain even temperatures and protect crops from harsh weather. Best for large frames and outdoor setups requiring substantial, long-lasting coverage.
Best for: Large or multi-season coverings; areas needing substantial durability and weather protection. Avoid if you require ultra-lightweight, flexible film for quick setup.
Caution: Heavier tarps demand robust framing and secure anchoring to prevent wind damage in exposed locations.
Buying Guide: Key Considerations for 20 Mil Greenhouse Plastic
- Thickness vs. Durability: Thicker films (e.g., 16-18 mil) offer stronger tear resistance and longer life in windy or sunny climates, but may be less flexible for curved structures.
- UV Resistance: UV inhibitors extend film life and protect plants from sun damage. Check the level and duration of UV protection when planning multi-season use.
- Light Transmission: Clear or translucent films allow photosynthesis but can create heat buildup. For even temperatures, consider films designed for uniform light diffusion.
- Edges and Fastening: Look for reinforced hems, rust-proof grommets, and rope ties. Secure edges reduce wind flapping and edge tearing.
- Size and Application: Match film dimensions to your greenhouse footprint. Larger operations benefit from long runs (e.g., 20×100 ft) to minimize seams.
- Anti-Drip or Water Management: Anti-drip coatings help reduce water droplets that can burn plants and reduce clarity; evaluate trade-offs between clarity and droplet control.
- Repairability and Replacement: Consider the ease of patching and the expected replacement interval based on climate and cover quality.
FAQ
- What thickness should I choose for a windy environment?
– Heavier films such as 16-18 mil offer better tear resistance and edge stability in windy climates. - Is 6 mil sufficient for a long-lasting cover?
– 6 mil is more budget-friendly and suitable for light-duty or temporary installations; in windy or hot areas, consider upgrading thickness. - Does UV protection extend film life?
– Yes, UV inhibitors prevent premature aging and degradation from sun exposure, extending the cover’s life. - How important are grommets and reinforced edges?
– Extremely important for secure installation, especially on larger covers or in exposed locations. - Can I mix thicknesses in one greenhouse?
– Yes, but plan carefully for uniform light and temperature. Use thicker covers where wind or sun exposure is worst.