a few years ago there was a paint specifily for grow room worked very well (50.00 a gallon) but has quit making it
now-a-day we don’t have much /many options:
flat white paint
Ocura sorry about spelling price is 60.00 (+) appears to be out-standing - they a have side-by-side video of the maylar and Ocura. believe this might be the best ??
Interesting. In my prior job we would add sand to paint for traction (marine environment). We kept applying paint to keep the sand hidden, BUT if you were to purposefully use larger grain sand, then use thinner to wipe the surface afterwards…
Yes, once dry and CURED (just like flowers ) it gives off no more bad juju. Being under full spectrum light should have no effect on it, because I am pretty sure the sun gives off a bunch-o-spectrums wen it hits the roof…
I am thinking more along the lines of the reflective highway paint, or the retro they use on traffic signs. Using small glass bead in the paint (or sand) gives he reflection many directions to go. So this would be used with whatever paint you use. Pour your paint in a pan. mix sand in, then apply with a thick roller.
I have tried many different things The roof coating usually requires a primer and they are both expensive. I had a friend that used Orca Film on a small grow box and the heat increased well over Flat white Paint. I am using the Behr Ultra White Flat Paint and it has been working great easy to clean and replace.
I think that mylar or gold or whatever reflective material would be best. I do think that if you resort to a reflective paint, adding sand to change the refraction and spread light more evenly would be a help.
Sorry for beating the dead horse. I think this finally explains what I was saying, so I’m done now