Ok guys, which insulation for movable walls?

[$uper$tar]

I'm building six 8'x4' movable walls to use in my studio as both gobo's, and to create a mix environment when needed around my mix station. We are using 8'x4' drywall (5/8"), studed at 24" (right down the middle) and I will be using 2'x4' sheets of insulation of one of the following:

Roxul Rockboard 60

ATS Acoustics Rigid Fiberglass Board

There will be 2" spacers in between the dry wall and the insulation, and the other side will be covered with burlap fabric right over the insulation for absorption. Which of the above would be better and why? I would like to go with the cheaper, but will go with the more expensive if necessary.

Thanks

[Brainchild]

ATS is generally a rip-off on everything they sell, so I would avoid them just so as not to encourage their continued existence.

[SAC]

If the ATS panel has the same verified response as OC 703, go with whatever is panel's total cost, including shipping, is cheaper. Other than cost, the differences are essentially a wash.

[$uper$tar]

Originally Posted by Brainchild

ATS is generally a rip-off on everything they sell, so I would avoid them just so as not to encourage their continued existence.

Why do you say they are generally a rip-off? What experience have you had with them? Are you speaking from experience, or reputation?

Thanks

[Lonely Raven]

Originally Posted by $uper$tar

Why do you say they are generally a rip-off? What experience have you had with them? Are you speaking from experience, or reputation?

Thanks

Do the math on how much the panels cost there vs. buying them yourself at an insulation depot. Then compare the cost of their "burlap" vs. what you can get at your local fabric store (especially if your local store has a 40-50% off sale!).

They aren't selling anything that you can't do yourself...except for maybe those roto-thingies. Those are pretty smart, but way overpriced.

[$uper$tar]

Ok, well basically I need 24 sheets of 2" 2x4' 703, or something like it, to put inside my movable walls. Any suggestions on where to buy this stuff online? I'm in the St. Louis area if there is anything close by I can run and pick it up. ATS just looks pretty cheap...so it's caught my eye.

[Mumblesound]

Try giving these guys a call:
Bay Insulation- Bay Industries

You'll probably save some cash, if they sell to the general public.

[dykstraster@gmai]

I'm hoping you've put some thought into how extremely top heavy this 8' tall wall will be.

I'm not trying to insult you, AT ALL, just making sure you are thinking everything through.

How tall are your ceilings? Have you left an appropriate amount of room to be able to tilt these up AFTER you have added the cross braces for the likely no shallower that 3' wide base platform and casters?

Are you planning to edge the "wall" in hard wood? The edges of drywall are very brittle, and are likely to take a beating being movable. I'd suggest possibly looking into a plywood face rather than drywall, and maybe even a center wood "core" with insulation on both sides... depending on how you usually track things.

Have you considered cutting your wall in half (4x4') and implemented some type of latching device so you can stack when needed?

Good luck with it.

[dykstraster@gmai]

I get all my stuff from these guys. They are local for me, I'm not sure if they ship out

Welcome To Allied Insulation

[dykstraster@gmai]

Originally Posted by Lonely Raven

They aren't selling anything that you can't do yourself...except for maybe those roto-thingies. Those are pretty smart, but way overpriced.

Especially if you consider an alternative:

All you need is two "L" brackets, sandwiched together to form a "T". Pop them through your panel BEFORE you cover with fabric, and you effectively have an eye hook for hanging.

[dykstraster@gmai]

Originally Posted by dykstraster@gmai

How tall are your ceilings? Have you left an appropriate amount of room to be able to tilt these up AFTER you have added the cross braces for the likely no shallower that 3' wide base platform and casters?
.

Just as an example. This 8' wall, when placed on an even possibly too modest 4" thick base that's 3' long, with 4" casters becomes 8' 8 1/16" tall.

When attempting to raise it into position, it becomes 8' 10" at it's tallest. (honestly, I expected a greater difference than that.

[$uper$tar]

Originally Posted by dykstraster@gmai

Just as an example. This 8' wall, when placed on an even possibly too modest 4" thick base that's 3' long, with 4" casters becomes 8' 8 1/16" tall.

When attempting to raise it into position, it becomes 8' 10" at it's tallest. (honestly, I expected a greater difference than that.

Thanks a bunch for your information and suggestions. Height should not be an issue, as my ceiling is 10'...however, I am a little concerned with how heavy it is going to be. The plan that was suggested was to look just like the above, except the base would only extend out one way or the other leaving one side able to be flush with another wall. I was concerned that this would not work though as the wall could easily fall over if left in the middle of the room. Is it not possible to have a 4' base extending out of one side of the wall, and then have that braced from the base to the wall? Or do I most certainly need the base to extend out both sides of the wall, like the pic above?

As for the fiberglass insulation, I still have not found a place cheaper than ATS for a 6 pack of the stuff. I'm not buying anything they have "put together." I'm simply wanting to order about 24 sheets of Fiberglass insulation...they're price is the best, and I still haven't gotten an answer as to why they aren't good to buy from.

Thanks

[dykstraster@gmai]

You're gonna want feet extending out to both sides, and to be honest, if I was putting that in my room, I'd want AT LEAST 2' in both directions (4' total) And I would be prepared to add more length at the first sign of wobble.

If you simply must have feet in only one direction, I would suggest a large amount of dead weight being attached to the end of the feet, to counteract the tendency to tip.

If you can't find another dealer, I don't think you're getting terribly hosed. The link I posted above, I wanna say I paid about $40 for an 8 pack of 2" thick roxul. Rockwool and OC perform very similarly acoustically, OC is just more ridgid and behaves better when no frame is being used.

In my area OC is more expensive than roxul, I've heard that this is location specific.

[dykstraster@gmai]

maybe this:

all red circles represent casters

these hinges would need to be as beefy as possible.

on the swingable legs, I would also some how incorporate a diaginal support that could flip and lock into place

[EDIT] I would build a triangle uppward at the end of the swingable legs, that would form the diagonal brace as on the last image. Buy making a permenant "triangle" it will also allow you to use multiple hinges to stiffen the pivot. No time to draw a 3d one now, but if you don't get it, I'd be happy to later.

[Mumblesound]

Originally Posted by $uper$tar

As for the fiberglass insulation, I still have not found a place cheaper than ATS for a 6 pack of the stuff. I'm not buying anything they have "put together." I'm simply wanting to order about 24 sheets of Fiberglass insulation...they're price is the best, and I still haven't gotten an answer as to why they aren't good to buy from.

Thanks

Did you call the place that I linked in my above post?
ATS price is about $1.23 sq ft.
Add $24 shipping and that brings the price up to $1.73 sq ft.

I get 2" 703 for $0.94 sq ft from a local construction supply place.
I pick it up.

That place that I linked above seems to sell insulation of all types.
You might save yourself $40 per case.
Your choice.

Bay Insulation of Missouri
1170 Central Industrial Drive
St. Louis, MO 63110
Phone: 314-776-2002
Fax: 314-776-4616

[$uper$tar]

Hey guys thanks for all the help. I will definitely give Bay Insulation a call, thanks!

Anyways, in your opinions, would you guys go with a Rockboard Mineral Wool material, or would you stick with the Fiberglass stuff? I don't want sagging. Remember, these will be going into the walls, with one side of the wall covered only in Burlap for a giant absorber...so I'm not too worried about people bumping them. Rockboard is a bit cheaper, but I want to make sure it is sturdy enough and won't sag after time.

Thanks

[dykstraster@gmai]

Either will be fine in terms of sag, just get the best deal you can. When you build the wall, frame it so that the insulation fits quite snuggly between the studs. Also, I would put a stringer about halfway up, to prevent gravity from being able to pull down 8' of continuous fiber.

DId you follow my idea for the hinged legs on one side... with the vertical brace?