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Old 01-20-2015, 10:59 AM   #15
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1972 25' Tradewind
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Originally Posted by Tim A. View Post
If you look on the website for EcoBatt, you will find that it is made from recycled glass plus sand. Presumably the sand mentioned is quartz sand, the raw material for glass which is not partly from recycled glass. Rock wool is made from melted rocks of various types and is, essentially, volcanic glass.

The differences between the fibers in the pink stuff, the brown stuff, and rock wool are minor. The binding material which holds the batting together and the density of the batting can be very different. Also, they all will hold water like a sponge, so keeps those leaks under control!

Actually, fibreglass insulation will retain water. Mineral wool is hydrophobic and will not retain water and, therefore, makes for a better product in trailers or any situation where water might be present.

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Old 01-20-2015, 11:52 AM   #16
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2002 19' Bambi
Lafayette , California
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Originally Posted by cameront120 View Post
Actually, fibreglass insulation will retain water. Mineral wool is hydrophobic and will not retain water and, therefore, makes for a better product in trailers or any situation where water might be present.
I suspect that a hydrophobic character is much dependent on what is used to bind the fibers in the batting. According to Wikipedia, mineral wool is used in hydroponics:
"Mineral wool products can hold large quantities of water and air that aid root growth and nutrient uptake in hydroponics."

In other words, probably any glass-fiber product could be made nominally hydrophobic. Even so, with a dense batting, water will be retained.


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Old 01-20-2015, 02:31 PM   #17
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I don't care how water resistant it is, coat it, or heck keep the trailer sealed. Anything called "mineral-wool" sounds freaky to me, like asbestos freaky.

I'm suspicious of anything sprayed on or foamy, except as a sound deadener perhaps. Memories of urea-formaldehyde insulation spray, and I wonder what it's VOC venting, or if it's crumbling into dust.

I'd prefer new pink stuff to "recycled" eco tree hugger myself, only because my first thought is "recycled from what? medical waste?"

anyways it's ECObatt in the brochure, I'm sure the good folks at THOR wouldn't bait and switch me.

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