So I only needed to block two large windows and put up one wall to make a grow room, so I figured 1" foam board insulation with the shiny side in would work to block the windows then a simple false wall with 1" foam on inside and just 1/4 paneling on outside (this room is inside a temp controlled building with it's own environmental controls too). All was ok enough till I started the wall and noticed wird shading on my foam board thats in the window, but it didnt change as we move around the room.... I look closer and think what could be causing the weird shadowing.....And then damn it...it's the actual sun shining through the foam and the shadow is from a tree and the window cross bars, so what I found out is even a 2" foam panel by itself is not enough to block out direct sun light because we tried doubling it up and I could still see shadowing from outside....
So the point is.....Foam insulation boards from Home Depot @ 1" thick or 2" thick will not block the sun....
My plan is to pick up some Panda Film and hang that and that should block the rest of the light and the foam board will help with insulation like it's supposed too....
So the point is.....Foam insulation boards from Home Depot @ 1" thick or 2" thick will not block the sun....
My plan is to pick up some Panda Film and hang that and that should block the rest of the light and the foam board will help with insulation like it's supposed too....
