for my grow room in my closet, I used black and white poly. With smooth walls, and the white side facing in. Most hydroponics stores should sell it, cost me about $1.50/ft, and they store owner said it was around 90% reflective (dont know if thats true), good luck.

Yes thats awesome the poly is the shit. cuz its white on the inside. I wanted to go for polyshield since it blocks infrared sensors, but its so expensive. plus i found out fly-over's are illegal in the state of florida.

You can buy mylar cheap. The problem with foil is that it reflects too much heat. Even tho those low watt cfl's don't put out much heat, the foil will double back whatever they do put out. That would not be good in a small grow box.

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bueno papa dudo que encuentres algo parecido al mylar en la republica dominicana, si no lo pides por internet dudo que consigas algo mejor que papel de aluminio o kien sabe talves aparesca algo por ahi, yo use una ves un protector de parabrisas del carro de esos que venden en la calle.

bro just in case u dont speak spanish, i doub u get anything similar to mylar in the DR, migh as well buy over the ineternet, believe me i've tried

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IT´S 4:19... GOT A MINUTE?

It's true. In fact it's probably a little over 90%.
Panda Plastic, I believe, is superior to mylar in that it is easier to hang, reusable, and doesn't crumple (hence, no hot spots). Mylar is slightly better at reflecting, but it takes some practice to get it to point where it doesn't crease at all.

Tin foil is baaad, though. It causes numerous hot spots, conducts heat, and is a safety hazard. It also absorbs some of the light spectrum that the plant uses. It's more likely to get you caught as well, if you have patrols in your area that use thermal sensors. Flat white paint, in fact, is actually more reflective than aluminum foil, believe it or not.

~Ethno

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foil reflects heat more then anything.

the silver stuff they make chocolate wrappers, chips and biscuits packets etc out of is better than foil or paper. it made my box a lot brighter inside.

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Live Chat. my veg box

I got 2 mil mylar (instead of the 1 mil I was going to buy). It was a little bit more expensive, but it doen't crease easily at all and it doesn't punture or tear easily either.

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DWC BUBBLER GROW - MANDALA SATORI
Pictures posted are copied from internet and are not mine.

NEVER use tin foil to line your grow room. This causes hot-spots and can damage your plants. Use mylar for the walls or flat white paint. You can also paint the floor of the room or, alternatively, you can purchase a special lining for the floor which is not only reflective, but also waterproof and easy to clean. Good for hygiene.

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Growing hemp as nature designed it is vital to our urgent need to reduce greenhouse gases and ensure the survival of our planet.
-Jack Herer