US source for rigid fiberglass

Posted: Wed May 12, 2004 2:23 pm

Folks,

Someone in another group found this national chain that sells 703 and other such products:

www.spi-co.com/servicecenterdirectory.mv

--Ethan

Posted: Thu Sep 02, 2004 10:59 pm

Hi Ethan,

I would like to contact you privately. Are you able to receive private messages on this forum, or can you advise your email address? Alternatively, please contact me at:

kinetic@optusnet.com.au

Thanks

Posted: Thu Sep 02, 2004 11:48 pm

Sorry Ethan, I now have your email address. Will contact you shortly. Please disregard the last post.

Regards

Posted: Wed Oct 06, 2004 7:08 pm

try your local industial insulation suplier in the yellow pages they should have that or an equivelant one from mansville or other co. ask for rigid fiberglass.

Posted: Tue Jul 05, 2005 9:02 am

edited for content.

we do not allow the direct promotion of product in this manner.

Should you wish to advertise your product - please take out a banner ad.

This isn't fair to our other advertisers.

Thanks for understanding.

Rod

Posted: Sun Jul 17, 2005 6:10 pm

bpape,

this doesn't belong in this thread, but a board as FRK is very sensitive to the manner the foil is connected to the board.

If you make such a board yourself, it can show strongly deviating properties. Neither worse, nor better but different and unknown.

If you check the FRK data of different thicknesses and wool densities, you'll notice the often unpredictable behavior from the original OC FRK material as well.
A possible explenation is simple:

An FRK is not primary designed to show stable acoustic behavior but to keep a vapour barrier in place.
As a DIYer you maybe even can glue it better to the boards. Only you will have a different acoustic board.

This has to do with the apparent mass of the foil which is not just the mass of the foil itself but the combination and interaction with the way it's connected to the board itself.
What is the acoustic mass of this foil? That's not that easy to answer.

But this is off-topic versus the title of this thread. I'm sorry.

Posted: Mon Jul 18, 2005 5:49 am

Rod,

I certainly understand. That post had been there for quite some time. I only put it up there after a Q and A in another thread where I specifically didn't post that it was me (thinking that it was inappropriate) and later was told that it was OK. Based on that, I posted it here simply for informational purposes. Again, my apologies.

Eric,

Thanks for your post. I fully understand that differences in scrim types and mounting methods will make a difference in the performance of the resulting panel. Not having done specific comparisons between different types of scrim, different adhesives, etc., I can't say what exactly - maybe you can shed some light on this?

What I can say is that when I use the scrim that I have access to on top of 1" 703, the measured in-room results are consistent with the OC specs for their manufactured 1" 703 FRK. What they'd measure in the reverb room I have no idea.

Posted: Mon Aug 01, 2005 5:30 am

bpape wrote:

Eric,

Thanks for your post. I fully understand that differences in scrim types and mounting methods will make a difference in the performance of the resulting panel. Not having done specific comparisons between different types of scrim, different adhesives, etc., I can't say what exactly - maybe you can shed some light on this?

What I can say is that when I use the scrim that I have access to on top of 1" 703, the measured in-room results are consistent with the OC specs for their manufactured 1" 703 FRK. What they'd measure in the reverb room I have no idea.

Bryan,

I entered a related post here:
http://forum.studiotips.com/viewtopic.php?t=1807
But this does not belong in this thread and there is hardly a way, as a dyer you can make a stable gluing process in function of a repetitive acoustic response.
Maybe averaged over larger quantities, but not when you call it individual absorbers.
And to know: testing it.

There are manners to get a more stable behavior.
With Rockwool I know, for ceiling tiles made of 1 to 2" Rockwool such foils are glued on a separate line on a rockwool board which is first cut in half thickness using the cut side to have a more stable nice flat surface, getting rid of the imprint of the conveyer belt.

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