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Another Peel & Seal thread... but not what you think


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This entire thing was sparked because of a Peel n' Seal thread on another forum, but thought I should share it here too.

Why? Because knowledge is power! :yahoo:

So enjoy!

This is a response to the thread Is there a big difference from dynomat to something like peel n' seal?.

So I took some time and ran some products through a fairly simple vibration test.

First off how the tests were handled.

The tests took place in my well insulated and heated CNC shack. It was a constant 75°-78° degrees the whole time.

I began with a brand new 12" x 24" sheet of 22 gauge steel.

testing_01.jpg

testing_02.jpg

testing_03.jpg

I then laid out where everything would be applied for the testing.

testing_04.jpg

The sheet is split in half to provide some distance between the vibration source and the equipment that will record/pickup the vibrations.

The bottom half is the testing area.

A 6" square smack dab in the middle is where the CLD product will be placed to simulate 25% coverage.

The Peel & Seal product will be placed over the entire bottom half of the sheet metal to simulate 100% coverage.

Location for the transducer that will provide the vibrations for the test.

testing_05.jpg

A better shot of the "testing area" where the products will be applied.

testing_06.jpg

On the backside of the testing area is where the pickup (in this case a highly sensitive accelerometer) will be placed.

testing_07.jpg

I then mounted the whole shebang to my 8 0/20 built table.

testing_08.jpg

Now onto the testing!

With the transducer mounted to the panel, an audio signal was then fed into it, thus causing the panel to vibrate. I used the 20Hz to 250Hz Sine Sweep from Realm of Excursion. I ran the test a total of three times and took the average of the three and used that as my baseline. Here is the graph for the baseline.

bare_metal.jpg

The pink horizontal lines represent the highest peaks.

U-Seal/Peel & Seal

Once the baseline was set, I started off with the U-Seal and covered the whole bottom portion of the panel. I left a little bit of space around the edge for easier removal. With a typical install this would be classified as 100% coverage.

testing_09.jpg

I then repeated the same testing procedure, took the average of the three tests and that became the 100% U-Seal results.

Blue = the bare metal baseline.

Red = the U-Seal run.

useal100.jpg

The pink line represents the peak while testing 100% U-Seal coverage.

So to make things fair, I also ran U-Seal @ 25% coverage.

testing_10.jpg

And the results of that after three runs and taking the average.

useal25.jpg

FatMat XXX

After several minutes of scrubbing the panel and getting all of the crap off (the most enjoyable part of testing... ::)), I applied some FatMat XXX to the panel, 25% coverage.testing_11.jpg

Three runs and taking the average.fatmat.jpg

CLD

Next up was the CLD. Once again the joys of cleaning off this stuff set in...:(

Once clean, I applied the CLD.

I went with a well known product hovering around the $3-$3.50 price point. I will not disclose which one I used (I don't want to get sued by any company), but it measures around 1.8-2 mm thick and has a foil thicker than 4 mils.

testing_12.jpg

Once again, ran the same three tests and took the average.

cld-1.jpg

I am not going to comment on how each product did but simply post the data I collected and you can make up your own decision.

Also to make comparing everything easier, here are the peaks of all of the products laid over the baseline.

compiled-testing.jpg

And here is the 100% U-Seal overlaid with the 25% CLD:

useal_v_cld.jpg

So I hope everyone appreciates the time, effort, and money involved with doing this and hopefully this will help put to rest (or at least lessen) the idea of using Peel & Seal as sound deadener.

And as always, if you have any questions about any of this, just ask.

CLICK HERE FOR PART 2 - two layers of U-Seal vs. 25% coverage with a CLD

CLICK HERE FOR PART 3 - 100% coverage with a CLD vs. 100% coverage of U-Seal vs. 25% coverage with a CLD

Edited by Second Skin Rep Jon
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so, peal and seal still sucks, man, i was hoping for a miracle i guess

My current 95 Jetta Build w/

pioneer h/u

2 RD Sonance 10's with flatwind coils

2 Audiopipe apsm 1500.1s

1 Hifonics Brutus Elite 60x4

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1 Stinger spv35

1 1000 amp lead acid

50 ft of 0/1 ofc from Audiotechnix

all powerbass components, and coaxils, 4 sets

buildlog = http://www.stevemead...2-rd-10s-build/

My build for my wife. http://www.stevemead...01-f-150-build/

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This is bullshit. There is no fucking way that peel and seal is not hte shit. You rigged this. Fuck your transducer and all that scientific testing equipment mumbo jumbo. Peel and seal and spray foam for life.

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Stinger

Tsunami Wiring

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Nate,

I know... I like to rig stuff just to prove my point and to sell a product. You know how much money the roofing industry is STEALING from us by having people use their product?

Main thing for me to do is to move product and SELL SELL SELL!

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:lol:

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Peel and seal FTW. Got around 4 layer on my trunk :)

and from what this test shows you could have gotten better results with only one layer of cld mat :pardon:

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