My observations from the QuietGlue white paper revolves around this:
For example, if labor costs $0.53/sqft to hang one layer of drywall and it takes at least three times longer to apply the glue, an estimate of the labor cost for gluing and installing two layers of drywall is $2.50/sqft, or $80 for a 4x8 foot panel area. Including cost of materials—two tubes of Green Glue ($14/tube) plus two sheets of 5/8” Type X drywall ($10/sheet)—the total cost would be $128 per 32 sqft of surface area (i.e. a 4x8 panel). Depending on the QuietRock model, the total installed cost can be about half the cost of gluing for high-volume commercial applications, three times faster, and the assembly would be UL listed for fire resistance
" Type X drywall ($10/sheet)."
I can find 4x8 5/8s Type X drywall AT RETAIL for closer to $7.00.
" Depending on the QuietRock model, the total installed cost can be about half the cost of gluing"
Wait a minute....I thought we were talking about their QuietGlue Pro glue , NOT the pre-made QuietRock panels.
"and it takes at least three times longer to apply the glue,"
From my observations of the crew that hung my drywall and Green Glue, I cannot POSSIBLY see how it took them 3 times longer to install. MAYBE twice because they did two layers, but NO WAY was it three times longer.
I had a crew of 5 to hang 130 sheets, delivered in two piles in about the middle of the room. There were two crews of two measuring, cutting and hanging at opposite ends of the room and the fifth, the crew leader, in the middle applying Green Glue between the piles keeping up with the guys hanging. It took 10 hours and that includes the cleanup after they were done.
I have to say that the illustrated instructions from Ted were invaluable for the install. This just goes to service support. Are there enough dealers to provide that same level of suport?
And just to go off a little tangent, this reminds of a story in a book I read about the history of Coca Cola. In it ,the author claims that while doing research in the Atlanta office's archives, he came across a faded piece of paper stuck inside and old book and it contained the actual formula for Coke. While interviewing one of the big wigs, he mentioned that he had found this, and showed it to the big wig. The big wig's reply was along the lines of "Even IF that is the formula, what would you do with it? You would have a drink that tastes just like Coke, but would have to spend a fortune advertising it, you would have to convince people that it is the same as Coke, build up a distribution network, etc, etc ,etc"
It appears to me that Quiet Glue is trying to play catch up here. Maybe their product IS as good or slightly better. From what I see in the test results, the performance differences are negligible for the home market. And the white paper seems to be jumping back and forth between comparisons of the DIY market and the commercial market when it is convenient.
MY advice? Do your research and cost comparisons by getting actual costs form reputable dealers. Then evaluate the service you can expect after the sale.