alfoiled walls go or no go?
- Thread starter Fenda
- Start date
Spanishfly
Well-Known Member
Aluminium foil is highly reflective, and dead cheap.
For many years I have use it very successfully as reflectors with tomatoes, grapes, cacti and MJ.
My experience (what I have FOUND, not what I have read) is that it is excellent stuff - give it a go.
For many years I have use it very successfully as reflectors with tomatoes, grapes, cacti and MJ.
My experience (what I have FOUND, not what I have read) is that it is excellent stuff - give it a go.
trichlone fiend
New Member
...I totally agree...foil is one of the WORSE reflective materials to use, creates hot spots and sends light to unwanted directions.
...here's a little more >>> https://www.rollitup.org/grow-room-design-setup/145941-more-reflective-tin-foil-flat.html
Kevin K
Well-Known Member
I don't think its foil. Its Mylar Sheeting, It's best for reflecting. Not the cheapest but work really well
Medi 1
Well-Known Member
mylar suks. light tight isnt mylar,. its aluminum foil infused in layers into the back white panda film....watch what happens when you get mylar wet.,...you can see through it.
http://www.easy-grow.co.uk/pdf/Easy_Grow_American_Leaflet.pdf
http://www.easy-grow.co.uk/pdf/Easy_Grow_American_Leaflet.pdf
Spanishfly
Well-Known Member
As I have said - I try lots of different things that I have read about.
Good stuff I use - rubbish I ditch. Foil is in the good stuff category.
ScrogThis
Active Member
While aluminum foil is not the best surface it's certainly better than bare walls. A good flat white paint is a little better in terms of reflectivity but not as good as say Mylar. It's possible to get hot spots with foil if the light is very large but I've never seen a 400W create any kind of hot spot with foil. Unless you are only using reflective material on one wall of the room the "scattering" people talk about is insignificant. Here's a chart from Jorge Cervante's Grow Bible - like him or not these are measured values, as you can see aluminum foil is not high on the list. My .02 cents fwiw
Material Percent Reflected
Foylon 94-95%
Reflective Mylar 90-95%
Flat White Paint 85-93%
Semi-gloss White 75-80%
Flat Yellow 70-80%
Aluminum Foil 70-75%
Black Less Than 10%
Material Percent Reflected
Foylon 94-95%
Reflective Mylar 90-95%
Flat White Paint 85-93%
Semi-gloss White 75-80%
Flat Yellow 70-80%
Aluminum Foil 70-75%
Black Less Than 10%
Spanishfly
Well-Known Member
Never seen any kind of ´hotspot´ with foil - the whole idea is total Old Wives´Tale rubbish.
Spanishfly
Well-Known Member
Got a reputable reference for all these figures ????
bird mcbride
Well-Known Member
My moto is: If you can't get what you want make do with what you got. No reason to stop the op. When you get the cash for the right stuff you can install it later.
bird mcbride
Well-Known Member
In other ops I have used white paint. For my personal op, the black and white plastic from the hydro shop. I think that would be the Mylar. I never asked the guy for the technical terms, I just tell him I want some of that reflective plastic stuff.