mylar substitute?

[fluid69]

just a heads up, I started with an emergency blanket and after it tore a few times I took it out and painted everything flat white, my temps dropped 5 degrees. this could be helpful or harmful, just keep it in mind.

[the image reaper]

just a heads up, I started with an emergency blanket and after it tore a few times I took it out and painted everything flat white, my temps dropped 5 degrees. this could be helpful or harmful, just keep it in mind.

good post :thumbsup:

[GaGrown]

I was faced with the same problem, so I went to Dope Depo...er, Home Depot and got a few sheets of styrofoam insulation, 0.5" thick by 2' x 4'. Tape them in place and you're good to go. Mondo cheap too.

I used the styrofoam score board insulation... It's 2 inches thick and comes in a 4x8 sheet. Perfect for any room where nails and wood or sawing in a problem!! It's very stealthy construction. You can cut them to any size and use the foil tape and a squeege....


Ga Grown!

[ForgetClassC]

You can buy mylar as a window treatment at homedepot, but dont, its way to expensive, do the emergency blankets thing, I need to go get me some as well

[the image reaper]

the styrofoam board insulation is very good, and, I've seen it as little as an 1/8" thick, too ... can be pricey ... if at Home Depot, check out their 'tileboard' ...it's 1/8" thick, masonite-type material, made for damp areas, shower rooms, etc. ... one side is a flat white, porcelain-like hard finish ... I took a light meter to Home Depot, and checked its reflectance, it beat the other surfaces they had ... it was $8.47 for a 4'x8' sheet, in Kalifornia, just the other day ... it's what I use :thumbsup:

[WickedJack]

Got a bunch of Doritos..?? Save your bags after you finish munchin...open'em up tape them together line your walls..lol j/k

[cptcannabis]

The space blanket should work ok, but it does tear super easy, since it folds up to the size of a wallet. Just be careful when you mount it to the walls and tape it really well. You should be able to find one in the camping section or the automotive section at Wally World.

[nwodreciffo]

Reflective silver wrapping paper?

[JMORGAN]

if I were you I would get a bunch of cardboard, paint that flat white, and then line your grow room with that painted cardboard. can be taken down and everything, or just use posterboard...

[radtek]

I coated a piece of cardboard with strips of Shurtape DC 181 to make a shade-reflector for my CFL's. Appears to work so far.

Also have a huge roll of Reflectix... that is reflective bubble-wrap type insulation used for radiant barriers. Anyone use this stuff? Looks like mylar. I'll report back...

Shurtape at Lowe's: 2" x 120 yd. Flex Duct Tape

Reflectix at Lowe's: 4' x 25' Double Reflective Foil Insulation