I have owned several Minitraps for many years and they work great!
I wanted to add more panels to a new room and decided to go DIY. I built a simple frame with vented sides and used 2x2'' Knauf Ecose (the 3lbs kind) and wrapped it with Guilford Of Maine from their FR701 line.
My question is about the need to double wrap. Since the GOM is not very tightly weaved, I'm wondering if Fibers can migrate through.
When I talked with a rep at Knauf HQ in the US they assured me that fibers won't migrate, but I'm wondering what people here think.
I agree with the Knauf rep. I believe the GOM is possibly tighter than burlap and I had no problem in the past with burlap. Lately, I do double wrap with economy (cheap) landscape fabric, not for containment but for color bleed through. The landscape fabric is so thin is allows the color of the insulation to "bleed" through so doubling up is required for me to get a black panel. If you want to be super cautious, I suppose you could do one first wrap with the cheap, thin landscape fabric. My guess is you won't have adverse results either way.