Local Prices

klh · « **on:** 10 Feb 2006, 07:18 pm »

I got prices from a local distribution center

2"x24"x48" 3# Knauf Insulation Board (fiberglass) w/FSK: $2.18/ft^2
2"x24"x48" 3# Knauf Insulation Board (fiberglass) w/out FSK: $1.60/ft^2
2"x24"x48" 6# Knauf Insulation Board (fiberglass) w/FSK: $3.39/ft^2
2"x24"x48" 6# Knauf Insulation Board (fiberglass) w/out FSK: $2.71/ft^2

2"x24"x48" 8# Mineral Board w/out FSK: $1.00/ft^2

The mineral board looks good for Bass Traps but the fiberglass is expensive. He said their prices for equivalent OC fiberglass is the same. I think I'll have to keep looking.

Red Dragon Audio · « **Reply #1 on:** 10 Feb 2006, 07:58 pm »

Quote from: klh

I got prices from a local distribution center

2"x24"x48" 3# Knauf Insulation Board (fiberglass) w/FSK: $2.18/ft^2
2"x24"x48" 3# Knauf Insulation Board (fiberglass) w/out FSK: $1.60/ft^2
2"x24"x48" 6# Knauf Insulation Board (fiberglass) w/FSK: $3.39/ft^2
2"x24"x48" 6# Knauf Insulation Board (fiberglass) w/out FSK: $2.71/ft^2

2"x24"x48" 8# Mineral Board w/out FSK: $1.00/ft^2

The mineral board looks good for Bass Traps but the fiberglass is expensive. He said their prices for equivalent OC fiberglass is the same. I think I'll have to keep looking.

Since they already carry Mineral Board - ask them if they'll order 3#-4# and bring it on their next shipment. You might have to wait a couple weeks until their next big shipment comes in.

Or you could just buy the 3# fiberglass boards (w/o FSK) and use a few of those for the first reflection points and use the 8# mineral board for your bass traps.

95bcwh · « **Reply #2 on:** 10 Feb 2006, 09:15 pm »

These are expensive man...why not try rock wool board?

I can get 4lb/ft3, 4" thickness, 2ftx4ft at $0.7 per ft2; and 8 lb/ft3, 2" thickness, 2ft x 4ft at $0.4 per ft2.

It took me quite a long time to find the distributors. I actually called up a large number of insulation contractor. Unsurprisingly, the price quote I got from contractor were all double the price I got from distributors.

klh · « **Reply #3 on:** 11 Feb 2006, 01:31 am »

I'll see what they would charge fo 2" x 24" x 48" mineral wool panels at 2# or 3# density. The 2" 8# price is reasonable, but the knauf prices are rediculous. This is only the first place I've called... looks like I have a lot of calls to make.

klh · « **Reply #4 on:** 11 Feb 2006, 02:03 am »

I don't know what's going on in my head, but the following product looks interesteing...

http://www.intelligentinsulation.com/pdfs/IIG-404.pdf

I for the life of me cannot find or remember where I heard of this website. It looks intersting... have any of you dealt with this company?

klh · « **Reply #5 on:** 11 Feb 2006, 06:05 pm »

So, I e-mailed Intelligent Insulation Group to get info on their product, and their local distributor is the same local place I contacted earlier. As you remember, they already get the 2" 8# mineral board @ $1/ft^2. They said this particular distributor only carries product from their industrial line, not the commercial line. As such I think the following is what they carry:

http://www.intelligentinsulation.com/pdfs/IIG-402.pdf

Since they already carry the 2" 8# variety, I should be able to order other densities and possibly other thicknesses. And since their prices are somewhat reasonable, I'll see what they will do. Depending on price and availability, I was thinking about 2" 3# spaced 2" off the wall for the 1st reflection points and 5" 8# across all four vertical corners floor to ceiling. Since the guy in case study a few posts back found that to be the best option in his room for bass trapping, why not go for it?

I also got the number for the other major insulation distributor in the area, so I'll be able to compare some prices. Too bad nobody is open past 5:00 on weekdays and not at all on weekends.

bpape · « **Reply #6 on:** 11 Feb 2006, 08:03 pm »

I think that plan is the best course of action both from a performance and price perspective.

95bcwh · « **Reply #7 on:** 11 Feb 2006, 09:56 pm »

I have been trying to get IIG mineral wool panels and quad pipe in Houston but with no success. There're three distributors in Houston, most of them do not stock anything less than 6lb/ft3, they told me if I want 3lb/ft3 it needs to be special ordered. The price of IIG product are about 15% less than Owens Corning and Knauf. I called up IIG factory in Alabama and they told me that they're running at full capacity and struggling to meet new orders. Hence I gave up on IIG and instead go for mineral wool made by a local Houston company - Rock Wool Manufacturer Co, and turns out to save me a bit of money.

klh · « **Reply #8 on:** 12 Feb 2006, 02:44 am »

Interesting. The person I talked to the other day that the local place said they only stocks the 2" 8# sheets. WRT ordering, he said I needed to order full packages, but custom orders like that wouldn't cost extra. I'd just have to wait for them to get in.

klh · « **Reply #9 on:** 13 Feb 2006, 09:06 pm »

Update: I contacted the other major distribution center and their prices are about 30% higher!

And, I got new pricing on the mineral board.

2" 8# = 0.80/ft^2
3" 8# = 1.20/ft^2
2" 3# = 0.80/ft^2

All of them come in 48 ft^2 bundles. I think I'll get the 3# for the 1st reflections. The question is what to do about the cross corner broad spectrum traps. I will definitely get the 8# mineral board... I'm just not sure how thick to go. My first instict is to get enough to go 6". I'll try 4", and if that isn't enough add the extra 2". If 4" is enough, I'll laminate the 3# to the 8# and have them parallel to the wall directly beind the listening position. I remember Ethan stating some time ago that bass bouncing off the rear wall has a major impact on how a system sounds in a room... if the 3# faces into the room, it will catch the mid to high frequencies, and the 8# will pick up some of the lower frequencies (especially if it were off the wall a few inches). Seems like a win/win situation.

Before I buy... any recommendations?

Red Dragon Audio · « **Reply #10 on:** 14 Feb 2006, 04:19 am »

KLH,

That is a very sound plan (pun fully intended).
I like your idea of stacking 3# over 8# for the rear wall - killing a pair of birds.
RE: Corner Traps
Your plan to start with 4" thick corner panel traps is a great place to start.

klh · « **Reply #11 on:** 14 Feb 2006, 04:30 am »

Glad to get some positive re-enforcement. They guy said it will probably take at least a month or so to get the 3# material. It will have to be a costom order. No additional charge, I just have to wait for them to ge a full truck load.

Red Dragon Audio · « **Reply #12 on:** 14 Feb 2006, 07:29 pm »

KLH,

That's how my local distributors work - wait for a full truck.
Not a bad trade since there's no extra charge.

Perhaps start with your 8# panels now and get them all in place.
This will give you a frame of reference for when you introduce the 3# panels.
Then you will be able to hear what benefits you get from adding the 3# panels at first reflection points and on your rear panels as well.

klh · « **Reply #13 on:** 14 Feb 2006, 08:35 pm »

We're on the same page. I'd have to make two trips anyways since I won't be able to fit all in the car. Might as well bump one of the visit up a month. Not only that, there's no reason to wait for bass trapping when I can get the benefits immediately. Thanks for all your suggestions.

samplesj · « **Reply #14 on:** 14 Feb 2006, 09:43 pm »

Quote from: klh

We're on the same page. I'd have to make two trips anyways since I won't be able to fit all in the car. Might as well bump one of the visit up a month. Not only that, there's no reason to wait for bass trapping when I can get the benefits immediately. Thanks for all your suggestions.

Oh, come on just stuff them all in there for one trip.

How many boxes are you buying? I fit 5 2'x4'x1' boxes in my wife's Prius last Friday. I need to post those pictures though. They are pretty funny. You have to see it to believe it. I had to leave the hatch up with one pinned and tied vertically.

We ditched her minivan last year so all we've got around the house are my older sedan Prius and her hatchback one. I knew better than to try and take mine, but I honestly thought it would fit in hers. It was around 30 miles back to the house after I picked them up too. Oh, well I know better now.

klh · « **Reply #15 on:** 15 Feb 2006, 02:26 am »

I want proof! That sounds hilarious. I think I'm going to get 4 packages of the 3# and 4 packages of the 8#. Seems like it may be overkill, but the house in general has a lot of open walls and thus lots of echo. If I have leftovers, I'll make 'em look extra pretty and put the extras elsewhere in the house.

klh · « **Reply #16 on:** 15 Feb 2006, 02:27 am »

BTW, I have a '99 Corolla so I'm not much bigger than you. Size does matter, you know.

samplesj · « **Reply #17 on:** 15 Feb 2006, 04:13 pm »

Ok, I got a chance to dump the pictures and these are what were worth saving. Linked instead of inline since I didn't compress (~210k each)

http://www.phoenixlogic.com/images/aveq/fiberglass/aerial.jpg''>Aerial
http://www.phoenixlogic.com/images/aveq/fiberglass/ground.jpg''>Ground
http://www.phoenixlogic.com/images/aveq/fiberglass/side.jpg''>Passenger's side
http://www.phoenixlogic.com/images/aveq/fiberglass/hatch.jpg''>Hatch

In the future if I need more I'm going to limit myself to three at a time since I can get them in without needing to do anything too wild.

Red Dragon Audio · « **Reply #18 on:** 15 Feb 2006, 05:06 pm »

Jeremy,

looks like you've played a bit of Tetris in your life to fit all that in your prius.

Nice!

klh · « **Reply #19 on:** 15 Feb 2006, 09:21 pm »

How long did your future passengers itch after that? That was good work!