rigid fiberglass

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frederic

frederic

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Per John's recommendation I'm probably going to be applying rigid fiberglass in my vocal booth. I've seen sketches, pictures, and I have the impression its almost like a plywood material, in that its truly rigid, and can be screwed down like wood or sheet rock.

Is that the case?

I found the material at realtraps.com but I'm missing the minute detail in how to attach it. I can use glue, screws, whatever.

What did you guys do?

Stupid question I know... I'm a stupid guy :)
 
Not exactly.........

It's rigid, but not THAT rigid. You know the stuff they insulate huge ducts with? They use mastic glue and pins with washers to hold the stuff in place on an air duct.

I used the pins and washers to hold the RFS in place in my gobos. About $50 for 500 4-1/2" pins and 500 1-1/2" diameter washers. That was the smallest amount I could find from my local insulation supplier.

You can cut the stuff with a good kitchen knife. Cut it tight and you may not have to use any means other than the pressure of the pieces against each other to hold it in place. Very easy to work with. But wear long sleeves and a good dust mask! Cut it outdoors if you can!

2" seems to me the most versatile and the most "bang-for-the-buck". Should run about $1.25/SQUARE FOOT.
 
The rigid fiberglass, as C7 said, can still tear and it definitely won't hold a nail/screw head, especially on a ceiling. What I found that works reasonably well is to use large diameter washers and whatever screw length you need. I've got some panels attached to my ceiling this way and they hold just fine.

Darryl.....
 
Frederic,

You are certainly not a stupid guy - and the only stupid questions are the ones that aren't asked.

The pins work well - but there is always a pin tip hanging out - they do make plastic caps for those however.

I prefer to use fender washers with screws when doing this attachment.

One thing you will have to deal with is a fabric cover for these fiberglass boards.

You don't want the exposed fiberglass in any room - never mind an airtight room.

Glass fibers are suspected carcinogens..... so if you do a fabric wrap - and then use fender washers with screws to attach the panels they work pretty well and you don't end up breathing in fibers over the years.

One other item - make certain to purchase a spray fireproofing made for fabrics. You don't want to create a fire hazzard.

Good luck,

Rod
 
Thank you guys... all good info. Very much appreciated.

Not sure where I got the perception that its very rigid... but now I can picture it, and have a good idea how to attach it.

And I will wear a mask/long sleeves, I no longer install insulation naked. New policy :)
 
Here is the datasheet on the Owens Corning 703 that eveyone talks about.

http://www.owenscorning.com/comminsul/documents/Fiberglas700Series.pdf

They also make what is called Select Sound Board which comes in 4X8 Sheets. Same density specs. From what I understand it has a fairly rigid black facing so you wouldn't have to cover it with fabric as long as any seems where you cut are covered some how. It is black so if black is not your studio color, it may not be for you. It comes in 1" or 2" thickness and does cost about the same as an equal coverage area of raw 703. I found a supplier in my area which wasn't easy but you should be able to buy either product through and insulation dealer in your area.

http://www.owenscorning.com/around/sound/commercial_acoustics/black-acouboard.asp

http://www.owenscorning.com/around/sound/commercial_acoustics/BLACKAC1.PDF
 
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