YACWPT (Yet Another Crazy Window Plug Thread) - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 11-03-2013, 04:21 PM - Thread Starter
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I have 2 basement windows in my theatre space that I plan on covering right over. In anticipation, I cut some Linacoustic and fit it into the frame so that it would black out the window. Looks great from the outside. I proceeded to put in some Roxul insulation in the studs (right over the window).

Today, I wanted to use the window one last time to pass some stuff through (won't be able to do it much longer as drywall is gonna go up shortly), but when I removed the Roxul and then the Linacoustic, I noticed some condensation on the window glass.

I'm in Central Ontario and it was about -2c this morning and over the winter will routinely see -20c temps.

Now, I don't have any vapour barrier on the wall yet (that was the next step) and that may be why I'm seeing the condensation, but I still got a bit worried when I saw the moisture build up.

Question:

Should I place the Linacoustic in the frame and then tape a piece of vapour barrier (6 mil poly) directly to the window frame, then put the Roxul back in and then cover the entire wall with more vapour barrier as I normally would?

OR

Should I just stick it all back in and proceed with vapour barrier over the entire wall as per normal?

OR

Should I do both? I obviously don't want moisture issues.

I'd appreciate any words of wisdom smile.gif

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post #2 of 3 Old 11-04-2013, 10:59 AM - Thread Starter
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I'm a little hesitant to apply the double vapour barrier but something tells me sealing the window casing etc up after the Linacoustic is placed inside would be my best bet.

Anyone?

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post #3 of 3 Old 11-11-2013, 01:05 PM - Thread Starter
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I'm ready for vapour barrier -- anyone have any thoughts before I embark?

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