Best Heavy Plastic for Greenhouses: Durable Covers for Plants and Frames
The best heavy plastic for a greenhouse depends on the size of your frame, the weather exposure, and whether you need a fixed cover or temporary plant protection. The Tapix and Axgatoxe 6-mil sheets suit general-purpose coverage, while the Legigo roll offers extra length for covering more plants. The 16- and 18-mil clear tarps are thicker options, but their supplied descriptions include fewer product details. Compare dimensions and stated features before choosing.
| Product | Size and thickness | Best suited for |
|---|---|---|
| Tapix Store Plastic Sheeting | 10 x 25 ft, 6 mil | General greenhouse and project coverage |
| Axgatoxe Greenhouse Sheeting | 10 x 25 ft, 6 mil | Buyers prioritizing stated UV and tear resistance |
| 18 Mil Greenhouse Cover | 14 x 18 ft, 18 mil | Buyers seeking a thicker clear tarp |
| 16 Mil Greenhouse Cover | 16 x 20 ft, 16 mil | Buyers needing a larger, thick tarp |
| Legigo Greenhouse Plastic | 10 x 50 ft, 6 mil | Covering a longer row or more plants |
Tapix Store 6-Mil Plastic Sheeting
This 10-by-25-foot, 6-mil polyethylene sheet is a multipurpose option for greenhouse projects and general protective coverage. The listed features describe it as tear-resistant and suitable for plant covers, moisture barriers, and temporary outdoor enclosures. It is also intended for shielding floors, walls, furniture, equipment, and materials from dust, paint, and debris.
Best for: Gardeners who want one sheet for a greenhouse cover and other household or project uses. It was selected for its stated greenhouse applications and practical 250-square-foot coverage. Limitation: The product details do not specify UV resistance, so check whether the listing provides further information if the sheet will remain in direct sun.
Axgatoxe 6-Mil Greenhouse Sheeting
Axgatoxe’s clear polyethylene sheet measures 10 by 25 feet and is listed as 6 mil thick. The supplied features state that it is UV-resistant and tear-resistant, with protection from sunlight, rain, and frost. The clear film allows light transmission, and its 250-square-foot area can drape over greenhouse frames or cover other items.
Best for: Buyers comparing 6-mil sheets who specifically want stated UV and tear resistance. Its listed weather-protection features make it a stronger match than a general-purpose sheet when outdoor exposure is a priority. Limitation: At 10 by 25 feet, it may not cover larger structures in one piece; measure the frame and account for overlap before ordering.
18-Mil Clear Greenhouse Cover
This clear greenhouse cover is listed at 14 by 18 feet and 18 mil thick. Its name also describes it as a heavy-duty waterproof tarp. The supplied product information does not provide additional details about UV protection, light transmission, edges, or fastening features, so buyers should verify those points in the listing before using it as a long-term greenhouse film.
Best for: Buyers whose priority is a thicker clear tarp in a defined 14-by-18-foot size. It was selected as the thickest listed option. Limitation: The limited feature information makes it difficult to compare its outdoor durability or greenhouse-specific performance with the 6-mil films.
16-Mil Clear Greenhouse Tarp
This clear tarp measures 16 by 20 feet and is described as a heavy-duty waterproof greenhouse cover. Its 16-mil thickness is greater than the two listed 6-mil rolls, while its dimensions provide a broad single-sheet option. The supplied description does not state UV resistance or other detailed performance characteristics.
Best for: Buyers who need a large, thick clear cover and whose frame fits within the listed dimensions. It was selected for the combination of 16-mil thickness and 16-by-20-foot size. Limitation: Check the complete listing for greenhouse-specific details, such as sunlight performance and how the cover is secured.
Legigo 10-by-50-Foot Greenhouse Plastic
Legigo provides a 10-by-50-foot sheet of 6-mil polyethylene. The listed features describe clear plastic that lets sunlight reach plants while helping retain heat and moisture. It is intended for winter frost protection and is described as resisting frost, snow, heavy rain, and high winds.
Best for: Gardeners covering a long growing area or several outdoor plants, since the 50-foot length exceeds the other listed rolls. It was selected for its stated plant-protection and growing-season uses. Limitation: The 10-foot width may not span every greenhouse roof or frame; measure the structure before choosing it.
Buying Guide: How To Choose Greenhouse Plastic
What thickness should greenhouse plastic be?
Compare thickness alongside the product’s stated purpose and construction. The listed options range from 6 mil to 18 mil. The 6-mil sheets include specific greenhouse or plant-protection features, while the 16- and 18-mil options are described as heavy-duty clear waterproof covers. A higher mil number indicates a thicker sheet, but it does not by itself confirm UV protection, light performance, or service life.
How much plastic do I need?
Measure the roof, sides, and any overlap needed to attach the cover securely. Compare both dimensions, not just total area: a 10-by-50-foot roll gives length for a long run, while a 16-by-20-foot tarp is wider. Allow extra material for fastening and trim only after checking the frame measurements.
Does the cover need UV or weather resistance?
For a cover left outdoors, look for explicit claims about UV exposure, tearing, and weather. Axgatoxe lists UV and tear resistance; Legigo lists resistance to several winter conditions. Tapix lists general outdoor and greenhouse uses but does not state UV resistance in the supplied details. Verify the current product specifications for your intended exposure.
Should I use a tarp or greenhouse film?
A clear film roll can be easier to size for a frame or plant row. A tarp may suit buyers who want a defined, thicker sheet, but the supplied details for the 16- and 18-mil options are limited. Check whether the product includes suitable attachment features before assuming it will fit a particular greenhouse.
Frequently Asked Questions
Is 6-mil plastic heavy enough for a greenhouse?
These listings offer 6-mil sheets for greenhouse and plant-cover uses. Check the stated weather and UV features and match the sheet dimensions to your frame.
Does clear greenhouse plastic let sunlight through?
The Axgatoxe and Legigo descriptions specifically state that their clear polyethylene allows light to reach plants.
Which listed plastic is longest?
The Legigo sheet is 10 by 50 feet, making it the longest listed option.
Which product is thickest?
The 18-mil greenhouse cover is the thickest option in this comparison. Its supplied details do not establish UV resistance or other long-term greenhouse performance.
Can greenhouse plastic protect plants from frost?
The Axgatoxe and Legigo features describe frost protection. Protection depends on conditions and installation, so follow the product guidance and monitor plants during cold weather.