Grow Tent Reflective Film

Mylar or panda film?

The two materials do the same job differently. Mylar is a thin metallised sheet, highly reflective at around 97%, and best suited to a smooth wall it can be taped flat against — creases show up as bright and dark patches. Panda and blackout films are thicker polyethylene, around 90% reflective, and far more durable. They tolerate staples, hang over rough or uneven surfaces, and stand up to being wiped down between crops.

If your walls are flat and clean, mylar gives you more light. If you are lining a shed, a garage or a timber frame, the heavier films are the practical choice.

Diamond and patterned foil

The diamond-pattern ADF foil is textured rather than mirror-flat. It scatters light across the room instead of reflecting it straight back along the same path, which spreads intensity more evenly and reduces the risk of a hot spot burning leaves that sit close to a wall. That matters most in a narrow space where plants end up near the lining.

Sizes and fitting

Widths come in 1.2m and 3m, with roll lengths from 5m up to 30m. Measure wall height first and buy the width that covers it in one drop — a single sheet with no horizontal seam reflects better and is far quicker to fit. Panda zippers let you cut a doorway into a lined space without losing the light seal.