Control Room Drawing - Need Door Info

Steve -- I'm confused: Your detailed post call for 3/8" to 1/2" closed cell foam. The drawings show the back piece of foam as square, the front as rectangular. My glass width is 1/2" and 3/8th" respectively. I'm about to order EPDM and closed cell foam. Can you specify the optimum dimensions to order? Thanks Roma Baran NYC

When installing windows, I've seen pictures of people caulking the window perimeters facing the wooden frame. Is this desirable? is it a big no-no to use caulk instead of closed cell foam when fixing and sealing window between the wooden strips? Otherwise, is it at the glaziers place they have those closed cell strips?

Osse, I don't know about Sweeden, but here in the state a glazier will typically use a glazing tape for the installation of a single piece of large glass in a wooden framed opening. This is actually a butyl tape not a foam. This gievs an excellent seal between the wood stop and the glass. I always recommend that people then caulk between the glass and the frame a secondary seal. Rod

Thanks Rod for your answer. I didn't really understand what you meant so I've painted 3 pic's with different methods, which one do you mean?

Kinda like your third drawing.

The 1st (top most) picture. install the inner stops on one side - then the butyl tape against the stops - then setting blocks for the bottom of the window (to hold the glass off the frame with an even gap all the way around the window) then a couple of temp stops on the top sides of the frame - caulk the top over the window - install the top butyl tape against the glass - install the uppermost window stop - then finish all of the remaining 3 stops using the same proceedure..... Repeat for the glass on the opposite side of the window frame.......... Rod

Today I've called 10 glazier stores, with very varying quality and professionalism regarding sound-isolating window systems. One of them told me one thing that I want to confront you with, that one of the windows in a two-window system should be sloped for better sound rejection, what is your thought about this? To my understanding it's more of an aesthetic question rather than function. Thank you!

Hey there, i'v read through the site and couldn't seem to find the answer i was looking for. Im currently working on a studio in my detached garage. Two 12' x 12' rooms, divided by a double wall ( as seen on the site) with a 30 " x 76" window.....more like a hole where the window should be lol. I don't have the money to get the proper glass, especially not that big. I have accesability to acrylic and was wondering if it's stc rating was any good. I couldn't find an stc for acrylic anywhere and read different reviews on the sound transmission of it. Any ideas ? Thanks -jeremy

First, I'd suggest that you read the "stickies" (the fixed posts on the first page of this forum). Then, you really should start your own thread, rather than post questions about your build in someone else's thread. Having said that, a couple of comments:

Two 12' x 12' rooms,

Ouch! Your rooms are square! That is pretty bad, acoustically. You will probably want to do something about that. If you have 8 foot ceilings, then your problems are even more complex...

divided by a double wall ( as seen on the site)

There are an awful lot of things that could be called "double walls" in this site! :shock: Which particular one did you mean? What construction method are you talking about? Photos or a SketchUp model to explain it would help.

I don't have the money to get the proper glass, especially not that big.

Then make the hole smaller! :) Decrease the size until it gets small enough that you can afford it...

I have accesability to acrylic and was wondering if it's stc rating was any good.

Depends on what you mean by "acrylic". It has some acoustic uses, but needs to be very thick. And it probably won't work very well for what you have in mind. It would have to be VERY thick to match the mass of the glass you should put in there. But you didn't say what it is that you are trying to accomplish, so it might work. But probably not.

I couldn't find an stc for acrylic anywhere and read different reviews on the sound transmission of it.

I guess you are aware that STC isn't a good rating for studios? It does not tell you anything useful about the part of the spectrum that is of the most interest. - Stuart -

j.clarke wrote:

Hey there, i'v read through the site and couldn't seem to find the answer i was looking for. Any ideas ? Thanks -jeremy

The answer you are looking for is: Please read the forum RULES (stickies) that can be found at this link: viewforum.php?f=17 Please correct your initial post to conform with these rules and guidelines. Many here will not only NOT help while waiting in respect for owners and other better qualified persons to proceed, but will simply ignore these type of posts completely. You may want to immediately ask "what is it that I have missed". Most often it is as simple as including your geographical location in your profile. It might be that you have not included your budget! Trust me in that the more you know the better others can help you and that the answer to that question is in the forum rules linked page. Until then, good luck, Brien P.S. You did not look hard enough. It exists. Room ratios, golden ratios, reflection free zone, start your own thread, etc.

rod gervais wrote:

The 1st (top most) picture. install the inner stops on one side - then the butyl tape against the stops - then setting blocks for the bottom of the window (to hold the glass off the frame with an even gap all the way around the window) then a couple of temp stops on the top sides of the frame - caulk the top over the window - install the top butyl tape against the glass - install the uppermost window stop - then finish all of the remaining 3 stops using the same proceedure..... Repeat for the glass on the opposite side of the window frame.......... Rod

Hi! First time posting on this great forum. Old thread I know, but I wonder if the thickness of the glazing tape matters when doing a control room window? Thanks! Gustav