Reflex Total Blackout Reflective Sheeting - Reflects Light In, Blocks It Out
Best for: Growers lining a tent or room who need both strong light reflection and genuine light-proofing in one material.
Our thoughts
Plenty of reflective sheeting reflects light well but isn't actually thick enough to stop light passing through it, which matters a lot if you're running strict light cycles. The three-layer build here solves that properly rather than relying on a single thin reflective film. Strong, even performance without paying flagship prices.
Reflex Total Blackout Reflective Sheeting does two jobs at once: it reflects your grow light's output back towards the canopy, while also blocking outside light from getting in. It's built from three layers - a black light-blocking layer sandwiched in the centre, with a white reflective layer on either side. That black core is what genuinely stops light passing through the material, rather than relying on thickness or coating alone.
This matters for growers running strict photoperiods, since even small amounts of light leaking in during the dark period can affect flowering plants. Standard reflective sheeting often does a reasonable job of bouncing light back onto the canopy but isn't dense enough to be fully light-proof - Reflex's three-layer construction is specifically built to close that gap.
How it compares
Reflective grow-room sheeting ranges from thin, budget mylar-style films up to thicker, purpose-built blackout materials.
- Against thinner reflective films sometimes sold as tent lining, Reflex's three-layer, black-cored build is specifically engineered to be light-proof, not just reflective.
- Against premium diffusive reflective materials like Orca Grow Film, Orca is designed to diffuse light more evenly across the canopy rather than prioritise total blackout - the two solve slightly different problems.
- Against basic single-layer white/black poly sheeting, the dedicated black-core construction here gives more reliable light-blocking performance.
If light-tightness matters as much as reflectivity to you, this three-layer build earns its place over a standard thin reflective sheet.
Usage guidance
Simple to fit, but a few basics make the biggest difference to performance.
Lining a space
Fix the sheeting to the walls, ceiling and any exposed frame of your tent or room, overlapping seams generously and taping or clipping joins to avoid light gaps.
Sealing edges
Pay particular attention to corners and doorway seams, since these are the most common places for light to leak in or out during the dark period.
Handling
Avoid sharp folds or creases where possible, since repeated hard creasing can eventually weaken the material at that point.
Technical specifications
- Construction: Three-layer - black light-blocking core, white reflective outer layers
- Function: Reflects light inward, blocks light from passing through
- Sizes available: 5 metre, 10 metre, 100 metre rolls
- Application: Grow tent and grow room wall/ceiling lining
Who this is for
- Growers who need genuine blackout, not just reflective lining
- Anyone running strict photoperiod schedules where light leaks are a concern
- Growers lining a DIY room or converted space rather than a pre-made tent
Best suited to anyone prioritising light discipline alongside reflectivity.
Our take
This is genuinely purpose-built sheeting rather than a repurposed reflective film - the three-layer, black-core construction solves the light-leak problem that thinner materials struggle with. Strong, even performance without paying flagship prices for it.
Worth picking up if you need your grow space properly light-tight as well as reflective.
