John Sayers' Recording Studio Design Forum Archive

I've made 12 modules around a voice-over booth.

They are 7 feet high by 2 feet wide. The frame is made of MDF 5/8". I will cover them with fabrics(accous. transparent) on the front, sides, glued and stappled at the back of the frame.

I have made a "sliding system with 3/4" pine cutted at 45 degrees to give the option to slide them all around the booth. So they will be spaced from the wall at 3/4 inches all along the walls.

My concern is the back of the pannels. They are still bare fiberglass 703 (Owen Corning).

My question finally: should-I need to spray some kind of coating on this bare side(the back of the 703 pannels facing the wall) to avoid some particles in suspension in the air for sensible peoples?

Should be feather spray? (like 3M 77)

3M 77 is pretty intense for the job. I built as many 2x8 modules and used a 3M general spray adhesive. The 77 and 357 are too thick in my experience. I used some 357 and it comes out too fast and builds up quickly. I think 77 is the same. Their general purpose spray adhesive is pretty light and misting the entire panel holds light weight fabric very easily.

On the back of my panels I used a 100% polyesther material that is comonly installed on the bottom of furniture to keep dust from getting inside. It's almost papery in it's texture. It's very durable and is extremely porous. I believe it will contain the fibers no problem.

Good luck, wm.

Thanks for the idea! Good choice!

wmb wrote:3M 77 is pretty intense for the job. I built as many 2x8 modules and used a 3M general spray adhesive. The 77 and 357 are too thick in my experience. I used some 357 and it comes out too fast and builds up quickly. I think 77 is the same. Their general purpose spray adhesive is pretty light and misting the entire panel holds light weight fabric very easily.

Good luck, wm.

For the 77 stuff, I use it regularly to spray the 703 sides and inside the wood frame and I use it too for the fabrics (spraying at the back of the module). It helps to keep the fabric straight (minimizing "waves") then I stapple it(every 3-4 inches).

You have to wait for 30 seconds before to stick them together. This is a kind of "contact adhesive"

Works OK for me.

I've put to a execution the back polyester "paper" and it is really a good - and- sounding solution!

Thanks for the advice!

Hey, thats great! I'm glad it worked out. 77 is just fine, as is the 357. In fact I was recluctant to buy the general purpose stuff after using the 357.

I eventually had to because there was nothing else available when I ran out of 357. It turns out the general purpose was really better for the job. It's lighter so misting the entire surface was not a problem and I didn't have to worry about bleed-through getting on my hands.

Cheers, wm.