Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: Polyester batting substitute

Posted by Xenithon (A) on June 17, 2004 at 12:12:21

In Reply to: Re: Polyester batting substitute posted by Jon Risch on June 17, 2004 at 10:27:49:

Hi There,

Thanks again for the great info. I will do as you suggest with the dense layer toward the wall, followed by the less dense board then batting then burlap. I will also ask the fiberglass guys here about adhesive glues to use (it will most likely not have the same name here so if I ask for 3M '77' I will get some very strange looks :)

I only plan glueing the boards together so no worries there. I will try make these portable so that I can put them up, take them down, move them around etc. I may mount these panels on PVC pipes as I saw in the pictures of the wall panels on your site - that kills two birds with one stone (provides the gap and allows portability).

For the SQ&D I will use the CAVITYLITE at 40kg/m3. They don't come plastic wrapped as I have heard they do in the US/EU. Is it ok then to completely cover with batting and burlap? Would a 0.25-0.5" thick layer of batting suffice to keep the fibers in or must it be 1-2" thick as in the panels?

I read those posts and now understand the concerns. I see the main problem is inconsistent/unknown density. This may be a dumb question, but the ones I can get come in varying, published densities (they call it 'nominal density') - is the published densities the fiberglass WITHOUT the bonding resins, ie. the density of the raw fiberglass before being moulded into pipe shapes?

Finally for your SQ&D's - since 2x1m rolls may not be very sturdy on their own, is it ok to have two MDF/drywall endcaps and one in between the two rolls, to make a more sturdy 2m tall x 16" diameter trap?

Thanks and cheers,
X

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