VIVOSUN Diamond Mylar Film Roll 6 mil 4ft x 50ft — Heavy-Duty Reflective PET, 92–97% Reflectivity

VIVOSUN's 6 mil Diamond Mylar Film Roll is a heavy-duty, highly reflective PET foil (4 ft × 50 ft) designed to boost light distribution and stabilize temperature inside grow tents, greenhouses, and grow rooms.

This diamond-textured mylar roll pairs a thick 6 mil PET substrate with an aluminum-coated surface to deliver a reported 92%–97% reflectivity, while resisting tears, humidity, and routine cleaning. Offered in a long 4 ft by 50 ft sheet, it unrolls easily and can be trimmed to fit walls, ceilings, or custom frame linings. The included sealing cover protects the remaining roll when stored, and the material’s durability suits both hobbyist gardeners and professional cultivators looking for reliable light management without frequent replacement.

How does VIVOSUN Diamond Mylar improve light in a grow tent?

The diamond texture refracts and scatters incoming light so more photons reach plant surfaces rather than being lost to absorption. That means more even light distribution across canopy layers, fewer hot spots beneath direct fixtures, and better use of both natural and artificial light sources.

• 92%–97% reflective rate spreads light to lower leaves and shaded areas.
• Diamond pattern reduces glare and concentrates diffuse reflection.
• Works with LEDs, HPS, and sunlight to maximize usable light.

Is this film durable and easy to maintain?

Yes — the 6 mil thickness and macromolecular PET composition make the film tear-resistant and thermostable for repeated use. It tolerates humidity and can be wiped clean with a damp cloth; the heavy-gauge material also resists punctures better than thinner foils.

• 6 mil PET resists tearing and puncture during installation.
• Aluminum coating bonded to film tolerates moisture and cleaning.
• Sealing cover included to keep unused roll clean in storage.

How do I install and size the 4 ft × 50 ft roll for different setups?

The roll can be cut to shape with scissors or a utility knife and attached with clips, adhesive tape, or staples depending on the frame material. Because it’s supplied in a long continuous sheet, you can line walls, ceilings, or create custom reflective panels without seams in many standard grow areas.

• Cut to fit tent walls, ceilings, or framed panels with common tools.
• Attach using grow-tent clips, gaffer tape, or staple gun on wooden frames.
• Long 50 ft length minimizes seams for larger rooms and multiple tents.

Will the material affect internal temperature or humidity control?

The reflective surface helps distribute light without significantly increasing heat buildup; the diamond texture also contributes to temperature stability by diffusing focused hot spots. Because the PET film resists moisture, it won’t degrade under normal humidity levels typically found in grow rooms or greenhouses.

• Diffuses concentrated light to reduce localized hot spots.
• Thermostable PET maintains shape across typical grow temperatures.
• Moisture-resistant coating prevents water-related damage.

Who is this for: VIVOSUN’s 6 mil Mylar Film Roll is aimed at indoor gardeners, hobby growers, and commercial cultivators who need a durable, high-reflectivity lining for tents, rooms, or greenhouse panels. Choose this roll if you want long-length coverage that’s easy to trim, resists tears and humidity, and improves light spread across multiple canopy levels without frequent replacement. It's also a practical option for DIY projects, reflective insulation tasks, and spaces where a long, clean roll with storage protection is helpful.