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Mylar Superplant Diamond Black 1.2 x 30m
The Mylar Superplant Diamond Black is a high-performance reflective film with 94% light reflectivity and a hammered diamond texture for optimal diffuse light distribution, backed by a black layer that makes it 100% light-tight. Size 1.2 x 30 metres, thickness 110 µm. The diamond surface texture scatters reflected light evenly without hotspots. The professional choice for maximising light output in grow tents and custom grow rooms. Fast delivery across Belgium from plantandflower.be.
Mylar Superplant Diamond Black 1.2 x 30m — 94% Reflectivity, 100% Light-Tight
Choosing Mylar over standard white film is a deliberate choice for higher light efficiency. A white surface typically reflects 85–90% of incident light; the Mylar Superplant Diamond Black achieves 94% reflectivity — measurably more light reaching the canopy rather than being lost to the walls. The hammered diamond texture (Diamond) of the reflective surface also produces a diffuse reflection pattern that eliminates hotspots under the lamp and distributes light intensity more evenly across the full grow footprint. Browse the complete Film / Mylar range.
Diamond hammered texture: the difference from standard Mylar
Standard smooth Mylar reflects light specularly — directly and concentrated. The diamond hammered texture of the Superplant Diamond Black redistributes each light ray across multiple angles from every micro-facet of its surface. The effect is analogous to the difference between a mirror reflector and a hammertone reflector: more diffuse, more uniform, less peak intensity at the centre and better coverage toward the edges. This is particularly advantageous in grow rooms where a single lamp must cover a larger area. By comparison, the Black/White Foil 85mu remains the practical per-metre option for smaller projects.
Black backing: fully light-tight
The black layer on the reverse makes the film 100% light-tight, even at fixing points and overlaps. This makes the Diamond Black usable as a complete lining for grow rooms, corridors and converted spaces without any additional black backing layer required. The 110 µm thickness provides strength and durability for long-term use. A roll of 1.2 x 30 metres covers 36m² per roll. Pair it with a Secret Jardin Dark Street grow tent for a complete high-reflectivity setup. Also consider the Easygrow 70mu 25-metre roll for larger surface projects.
What is the difference between Mylar Diamond Black and standard white film?
Standard white film reflects 85–90% of light diffusely. The Mylar Superplant Diamond Black achieves 94% reflectivity thanks to its high-gloss diamond surface texture. The hammered pattern also ensures uniform diffuse distribution without hotspots. For growers seeking to maximise PAR delivery to the canopy, Mylar provides a measurable light gain over white film.
Is the Mylar Superplant Diamond Black suitable for grow tents?
Yes, the Diamond Black works well as supplementary lining inside or outside a grow tent. Its 100% light-tight construction (black reverse) also makes it suitable for blacking out windows, cable entries or uncovered corners of a grow room. The 1.2 metre width aligns with standard grow tent dimensions.
How much area does a 1.2 x 30 metre roll cover?
One roll covers 36m² of surface area. For a 3 x 3 metre grow room with 2-metre-high walls, the four walls total 24m² — a single 36m² roll covers the full wall area with ample margin for overlaps and cutting waste.
