Best Mylar For Grow Room: Compare Reflective Rolls and Sheets

#1 · Best Overall

1. VIVOSUN Mylar Film Roll

• Weight: 2.86 kg
• Inner Material: Polyethylene Terephthalate (PET)

Best for: Long-run grow-room coverage.

Why it ranks #1: Its 4-by-100-foot roll provides the longest listed continuous coverage, and VIVOSUN states that its double-sided film reaches 95% reflectivity.

A 4-by-100-foot roll gives this VIVOSUN film the longest listed coverage here, making it useful for lining a large grow area or cutting multiple custom sections. Its aluminum paint-coated, double-sided surface is specified to reach 95% reflectivity, helping spread available light across the space.

The 100-foot length lets growers cover a substantial area from one roll, while the 4-foot width provides a manageable strip to position and trim. VIVOSUN says the aluminum paint coating increases light intensity and distributes it more evenly, and that both sides reflect up to 95%, supporting use wherever light needs redirecting. The PET inner material and aluminum outer material identify the film construction; the listing also describes it as easy to clean, which can simplify upkeep after installation.

Skip it if you need opaque black-and-white coverage or a thicker 5.5-mil sheet; VIVOSUN Mylar Film Black and White Panda Film is the better fit.

Choose this for a grower lining a large room who wants a long, cut-to-size reflective roll. Its 2-mil thickness is the key boundary, so consider whether the thinner film suits your installation.

Listed on Amazon as: VIVOSUN Highly Reflective Mylar Film Roll 4FT x 100FT for Outdoor Grow Room Indoor Decoration Aluminum Paint Coated 2 Mil Silver

#2 · Best Durable Roll

2. AC Infinity Mylar Film Roll

• Inner Material: Polyethylene Terephthalate (PET)

Best for: Tear-resistant PET roll.

Why it ranks #2: The 4-by-50-foot, 2 mil PET roll is tear-resistant and thermostable, with a double-sided reflective surface for indoor or outdoor grow areas.

Tear-resistant, thermostable PET is the defining feature of this AC Infinity roll, which is specified to withstand high temperatures. Its double-sided reflective surface can help extend lighting coverage in grow tents, nurseries, greenhouses, or DIY grow rooms, while the 4-by-50-foot format leaves room for custom cuts.

The 50-foot roll offers more continuous coverage than small individual sheets, and its 4-foot width can be trimmed for a particular wall or growing area. AC Infinity describes the PET as durable and tear-resistant, with thermostability for high-temperature conditions; that combination is relevant when handling and positioning film around a growing setup. The double-sided surface amplifies lighting, and the lightweight, portable, easy-to-clean construction supports moving, cutting, and maintaining the lining.

Skip it if you need more than 50 feet of continuous roll coverage; VIVOSUN Highly Reflective Mylar Film Roll 4FT x 100FT gives you a longer run.

This suits growers who want a portable PET roll for a tent, nursery, greenhouse, or DIY room and value tear resistance and temperature tolerance. Its 50-foot length sets the coverage boundary.

Listed on Amazon as: AC Infinity Mylar Film Roll 4' x 50' Reflective Light Proof PET Foil Sheet

#3 · Best Mid-Length Roll

3. Ghguole 2 Mil Mylar Roll

• Weight: 2.29 lb

Best for: Mid-length reflective roll.

Why it ranks #3: Its 4-by-30-foot roll offers useful continuous coverage, and the aluminum-coated polyester is listed at around 95% reflectivity.

A 4-by-30-foot roll offers Ghguole buyers a middle ground between short project strips and longer room-lining rolls. The 2-mil aluminum-coated polyester film is specified at around 95% reflectivity, and its cut-to-size format supports indoor or outdoor grow areas as well as decoration and photography.

The 30-foot length provides a continuous strip for a defined area, while the 4-foot width can be trimmed to match a particular installation. Ghguole connects the aluminum-coated polyester surface with around 95% reflectivity, helping direct available light toward plants. Its 2-mil specification identifies a relatively thin film construction, while the stated indoor and outdoor suitability supports different growing locations. The listing also names room decoration, scene arrangement, and art photography as applications.

Skip it if you need the listed 6-mil construction; Ghguole Mylar Film Roll 4FT x 15FT, 6 Mil Silver Diamond Film is the thicker option.

Choose this for a grower needing a moderate-length, cuttable reflective roll for indoor or outdoor use. The 2-mil thickness is the main boundary if heavier film construction is a priority.

Listed on Amazon as: Highly Reflective Mylar Film Roll 4FT x 30FT,2 Mil Silver,for Outdoor Indoor Grow,Room Decoration,Scene Arrangement, Art Photography

#4 · Thickest Roll

4. Ghguole 6 Mil Diamond Roll

• Inner Material: Aluminum coated polyester

Best for: Thick textured grow-room roll.

Why it ranks #4: The 6 mil, 4-by-15-foot diamond-textured roll is thicker than the 2 mil alternatives and lists 92–97% reflectivity.

At 6 mil thick, this Ghguole roll emphasizes heavier film construction in a 4-by-15-foot format. Its aluminum-coated polyester has an embedded diamond texture and a stated 92%–97% reflectivity range, offering growers a cut-to-size surface intended to use available light effectively indoors or outdoors.

The 15-foot length is suited to a defined section or smaller grow setup, while the 4-foot width can be cut for the intended surface. Ghguole specifies 6-mil thickness and aluminum-coated polyester, pairing a heavier material description with a diamond texture. The stated 92%–97% reflectivity range explains its light-redirection purpose, and the listing says the material is not affected by water and humidity, a useful consideration for indoor and outdoor growing areas.

Skip it if you need more than 15 feet of roll coverage; Ghguole Highly Reflective Mylar Film Roll 4FT x 30FT provides twice the listed length.

This suits growers prioritizing a thicker, textured roll for a limited grow-room section or outdoor area. Its 15-foot length is the practical boundary, so larger rooms may need a longer roll.

Listed on Amazon as: Mylar Film Roll 4FT x 15FT,6 Mil Silver Diamond Film Foil Roll,Heavy-Duty Reflective Film for Grow Room,greenhouses,Grow Tent Systems

#5

5. niffgaff 2 Mil Mylar Roll

Best for: Compact custom-cut lining.

Why it ranks #5: This 4-by-25-foot PET roll can be cut to fit and is designed to redirect light, though it provides less continuous coverage than longer rolls.

A 4-by-25-foot roll keeps this niffgaff reflective film manageable for smaller grow areas and projects. Its reflective aluminum layer on PET is intended to redirect available light, helping improve coverage in grow tents or around indoor plants; the roll format also makes it possible to cut sections to suit a space.

The 25-foot length is suited to more limited coverage needs than a long room-lining roll, while the 4-foot width provides material that can be handled and customized. The listing describes a reflective aluminum layer backed by PET, connecting its light-redirecting purpose with a flexible sheet format for installation. It also names photography and DIY projects as uses, so remaining pieces can serve other light-management tasks rather than being limited to grow tents.

Skip it if you need to line a large room in one longer run; VIVOSUN Highly Reflective Mylar Film Roll 4FT x 100FT offers more continuous material.

Pick this for a small grow tent, indoor plant area, photography setup, or DIY project needing cut-to-size reflective material. The 25-foot length is the main fit constraint for broader installations.

Listed on Amazon as: 2mil Highly Reflective Mylar Film Roll 4FT x 25FT

#6 · Best Light Blocking

6. VIVOSUN Panda Film

• Weight: 3.38 kg

Best for: Light-blocking room divider.

Why it ranks #6: The 10-by-25-foot, 5.5 mil polyethylene has a black light-blocking side and a white side stated to reflect over 90% of light.

A black side that blocks light and a white side rated above 90% reflectivity distinguish this VIVOSUN Panda Film from silver-only lining. The 10-by-25-foot, 5.5-mil polyethylene sheet can create a darker boundary on one face while reflecting light back toward plants on the other.

The black-and-white two-sided construction offers different functions on opposite faces: the black side prevents light penetration, while the white side reflects more than 90%. That can help when a grower needs both light blocking and reflection in a single covering. Its 10-by-25-foot dimensions provide broad sheet coverage, and the 5.5-mil virgin polyethylene is described as high-strength and durable for heavy daily use, supporting repeated service in a gardening area.

Skip it if you specifically need a silver, double-sided PET foil roll; AC Infinity Mylar Film Roll 4' x 50' is a better match.

Choose this for a grower who needs an opaque black face and a reflective white face, especially where durable, broad coverage matters. Its polyethylene Panda construction differs from silver PET film.

Listed on Amazon as: VIVOSUN Mylar Film Black and White Panda Film, 10' x 25' 5.5 Mil Poly Film

#7

7. winemana Mylar Sheets

• Weight: 0.34 kg
• Inner Material: Polyethylene Terephthalate (PET)

Best for: Multi-sheet greenhouse coverage.

Why it ranks #7: Six 83-by-63-inch sheets offer cut-to-fit flexibility and stated reflectivity up to 95%, but individual pieces require more seams for large walls.

Six 83-by-63-inch sheets make this winemana set a flexible option for covering separate areas instead of unrolling one long strip. The VMPET film is metallized on both sides and specified at up to 95% reflectivity, helping redirect light around plants while allowing each sheet to be cut to size.

The six-sheet format lets growers distribute material across multiple locations or trim individual pieces for different surfaces; each sheet measures 83 by 63 inches. Winemana identifies the film as VMPET with metallized faces and up to 95% reflectivity, supporting its light-redirection role in a greenhouse or plant area. The product is also described as puncture- and tear-resistant, and its stated warmth-retaining and thermal-insulation functions may suit users seeking both reflection and plant protection.

Skip it if you want a continuous wall-length strip rather than separate sheets; Ghguole Mylar Film Roll 4FT x 30FT offers roll-format coverage.

This set fits growers covering several smaller surfaces or wanting pieces to trim individually, with warmth retention as an added listed use. Choose a roll instead if you need uninterrupted wall coverage.

Listed on Amazon as: 6 Pack Large High Silver Reflective Mylar Film, 83x 63 in, High Reflectivity, Keep Warm, 100% Environmentally Safe, Perfect for Plant Growth, First Aid, Marathon, Camping, Outdoor Survival

#8

8. RAINFLOW Mylar Sheets

• Weight: 0.33 kg
• Inner Material: Polyethylene Terephthalate (PET)

Best for: Garden sheets with warmth use.

Why it ranks #8: This six-piece set uses 83-by-63-inch PETP sheets for garden light reflection and insulation, but it is less suited to seamless wall coverage.

Six 83-by-63-inch sheets give RAINFLOW buyers several pieces for separate plant areas, and the listing pairs light reflection with insulation for warmth. The silver PETP film is intended to capture and redirect sunlight for gardens and greenhouses, while also serving as an emergency blanket outdoors.

Each sheet measures 83 by 63 inches, so the six-piece set can be divided among growing areas instead of requiring one continuous installation. RAINFLOW describes the silver film as enhancing light reflection and redirecting sunlight, connecting the material to improved light distribution for plants. Its insulation function is listed for cold conditions, and the emergency-blanket use broadens its role beyond gardening. The PETP construction is specified as durable, though the listing does not give a reflectivity percentage.

Skip it if you require a stated reflectivity percentage for comparing grow-room films; winemana 6 Pack Large High Silver Reflective Mylar Film specifies up to 95%.

Consider this for growers who want multiple sheets for garden areas and value the listed cold-weather insulation and emergency-blanket uses. The product listing does not quantify reflectivity, which limits specification-based comparison.

Listed on Amazon as: RAINFOLW 6 PCS Reflective Mylar Film – Mylar Blankets Garden, 83x63in

#9

9. Ztzfacai Mylar Sheets

• Weight: 11.4 oz

Best for: Cut-to-shape sheet set.

Why it ranks #9: The six 83-by-63-inch sheets are described as tear-resistant and cuttable, but the listing provides no reflectivity percentage or roll format.

Six 83-by-63-inch sheets that can be cut into any desired shape make this Ztzfacai set adaptable to separate grow-room surfaces. The listing describes the material as thickened, tear-resistant, and puncture-proof, and says the sheets reflect artificial light to help plants receive more light from grow lamps.

The six-sheet quantity allows growers to place pieces in different areas, while the 83-by-63-inch dimensions provide substantial material before trimming. The product description specifically connects reflecting artificial light with helping grow lights work better for plants. It also describes the film as thickened and resistant to tears and punctures for long-term agricultural use, and calls it non-toxic to plants. No reflectivity percentage is supplied, so buyers cannot compare it on that figure.

Skip it if you need a stated reflectivity figure for selecting sheets; winemana 6 Pack Large High Silver Reflective Mylar Film lists up to 95%.

This set fits growers who want adaptable sheets for separate surfaces and plan to cut shapes around their setup. Its listing gives durability claims but no reflectivity percentage for specification-based comparison.

Listed on Amazon as: 6 Pack High Silver Reflective Mylar Film,83"x63" Mylar Sheets for Plant Growth, Garden Greenhouse, Grow Room,High Reflectivity Mylar Films for First Aid, Camping, Outdoor Survival(2.1×1.6 M)

#10

10. Daomong Mylar Sheets

Best for: Compact double-sided sheets.

Why it ranks #10: Two 82.6-by-51.2-inch PETP sheets can reflect light, but their smaller sheet format is less practical for lining a grow room.

Two 82.6-by-51.2-inch PETP sheets give Daomong buyers a compact format for plant areas that do not need a full roll. The listing describes double-sided reflection up to 95%, using reflected light to support plant lighting, with additional stated uses spanning greenhouses, photography, camping, and emergency situations.

The two-sheet format is easier to allocate across separate small areas than a continuous roll, and the listed dimensions make each piece a substantial cover. Daomong identifies PETP film and coating with double-sided reflection up to 95%, tying the surface to making better use of light for plants. Its listed applications also include greenhouse covering, photography reflection, emergency blankets, makeshift tents, and outdoor survival, allowing use beyond a grow room.

Skip it if you need a long, continuous strip for lining walls; Ghguole Highly Reflective Mylar Film Roll 4FT x 30FT offers roll-format coverage.

This suits growers covering a compact plant area who also value the listed photography and emergency uses. Its two-piece sheet format is the boundary for anyone needing uninterrupted room-wide coverage.

Listed on Amazon as: Plant Growth Mylar Films High Reflective Mylar Film Garden Greenhouse Covering Foil Sheets for First Aid Blanket Growth Room Camping Simple Tent,82.6 x 51.2 Inch(2 Pieces)