Charlie:
Doug lives over in Spring Shadows over there in Spring Branch, and he says he has a house that was built in the late 50s and has blown-in insulation. It looks like gray cotton.
Tom:
That’s rock wool.
Charlie:
He says it’s about an inch or two thick. He wants to put down rolled fiberglass, Tom, but he wonders if he needs to remove that stuff before he does that.
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Tom:
Most people don’t because it gets to be pricey, but if you were really going to be real particular about it, you could find a company that has a vacuum truck and go up there and vacuum all that stuff out. To try to do it yourself would be a big mess. One thing about rock wool, it’s a natural product. It doesn’t have any bore rates or any kind of poisons or additives or fire-retardants in it.
Charlie:
They got it right back then.
Tom:
Yeah, but it deteriorated really quickly and it became very dusty, so it does get in the home. You do breathe it, and the worse is it aggravates your nasal passages somewhat, but it’s not dangerous to you like the cellulose with the bore rates and the fire-retardant chemicals in it.
Charlie:
They don’t still sell that stuff.
Tom:
What?
Charlie:
Rock wool.
Tom:
I think you could get probably buy it, but you’d have to look long and hard for it.