Roof Insulation Preferences/Suggestions - Team Camaro Tech
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post #1 of 11 (permalink) Old May 20th, 19, 05:16 PM Thread Starter
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Brett
 
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Roof Insulation Preferences/Suggestions

I purchased the TMI one-piece Headliner. I am afraid sticking the insulation/sound deadening material up on the inside of the roof as I am concerned the Texas heat would eventually win and the material would start falling. I am leaning towards a spray-applied material. What would you all recommend?

Thanks,

Brett........

1969 SS 396 X66 - RS Conversion - TKO600 - 3.73 Posi - Paint Code 71-LeMans Blue
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post #2 of 11 (permalink) Old May 20th, 19, 05:22 PM
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Don
 
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Re: Roof Insulation Preferences/Suggestions

I am not a believer in sprayed materials. I use Dynamat followed by a layer of Thermozite insulation. Iíve used Dynamat on all of my builds and never had a failure. Just use genuine Dynamat and make sure the surface is properly prepped.

Dynamat really isnít insulation. Itís a vibration dampener. Thermozite is what delivers the needed insulation.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
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post #3 of 11 (permalink) Old May 20th, 19, 05:34 PM
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Re: Roof Insulation Preferences/Suggestions

Quote:
Originally Posted by dhutton View Post
I am not a believer in sprayed materials. I use Dynamat followed by a layer of Thermozite insulation. Iíve used Dynamat on all of my builds and never had a failure. Just use genuine Dynamat and make sure the surface is properly prepped.

Dynamat really isnít insulation. Itís a vibration dampener. Thermozite is what delivers the needed insulation.

Don
Don, how are you attaching the Thermozite overhead to the Dynamat?

Thanks -

Eric

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post #4 of 11 (permalink) Old May 20th, 19, 05:37 PM Thread Starter
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Re: Roof Insulation Preferences/Suggestions

Eric, good question. Don, I will rethink my thoughts then if it has been working for you...

Brett.....

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post #5 of 11 (permalink) Old May 20th, 19, 05:55 PM
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Don
 
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Re: Roof Insulation Preferences/Suggestions

I use 3M spray contact adhesive. Spray both sides and let it dry before applying the insulation.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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post #6 of 11 (permalink) Old May 21st, 19, 03:45 AM
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I like the Lizard skin spray sound/temp control. It really does work, and it also makes the roof more stable. Absolutely no oil canning with this stuff. I too was concerned about the glue in my area. Very hot, and very humid here in the summer.

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post #7 of 11 (permalink) Old May 21st, 19, 08:18 AM
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Re: Roof Insulation Preferences/Suggestions

I just did a layer of dynamat (noise) with a layer of dynaliner (heat and additional noise) over that. Huge difference if I tap on the roof.

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post #8 of 11 (permalink) Old May 21st, 19, 11:43 PM Thread Starter
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Re: Roof Insulation Preferences/Suggestions

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Originally Posted by CDB View Post
I just did a layer of dynamat (noise) with a layer of dynaliner (heat and additional noise) over that. Huge difference if I tap on the roof.
This is exactly what I purchased. Did you apply the dynaliner to the dynamat before you applied the dynamat to the roof? What did you prep the surface with before application?

Thanks,

Brett......

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post #9 of 11 (permalink) Old May 22nd, 19, 03:26 AM
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Don
 
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Re: Roof Insulation Preferences/Suggestions

Quote:
Originally Posted by Brettallen59 View Post
This is exactly what I purchased. Did you apply the dynaliner to the dynamat before you applied the dynamat to the roof? What did you prep the surface with before application?

Thanks,

Brett......
Apply the Dynamat then the dynaliner. Donít stick them together before application.

Don

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
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post #10 of 11 (permalink) Old May 22nd, 19, 06:50 AM
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Larry
 
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Re: Roof Insulation Preferences/Suggestions

I did mine about a year ago. For whatever it's worth ...

I installed the *Cool-It* Heat and Acoustical Control Mat to the metal roof. I wire brushed all the old residue off the metal surface (wire wheel in the pneumatic die grinder). Cleaned it up as good as I could then wiped the remainder with a degreaser ... It was real clean when I applied the mat.

Then I peeled regular fiberglass insulation down to a thickness that would fit in the space between the headliner and the roof and glued it onto the headliner with simple spray adhesive.

This is what my TMI headliner looked like when it went in the car.

There is a thread on the forum here.

I should add, it gets pretty hot here in Las Vegas as well. I had similar concerns about the heat. No problems or complaints so far.

DSC_1379 by Larry Madsen, on Flickr

Edited to add: This is the mat I used. I've used quite a bit if this stuff in the car and experience seems to be telling me that heat makes it even more sticky and gummy. Maybe 20 years of life would make a difference, but I'm not too afraid of this stuff coming off.
DSC_1335 by Larry Madsen, on Flickr

I can't complain, but sometimes I still do.

Last edited by Larry Madsen; May 22nd, 19 at 07:07 AM.
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post #11 of 11 (permalink) Old May 22nd, 19, 07:59 AM
CDB
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Re: Roof Insulation Preferences/Suggestions

Quote:
Originally Posted by Brettallen59 View Post
This is exactly what I purchased. Did you apply the dynaliner to the dynamat before you applied the dynamat to the roof? What did you prep the surface with before application?

Thanks,

Brett......
I agree with Don. Apply to the Dynamat first, then apply the Dynaliner. You'll find the Dynamat is much pickier. It's a foil with tar backing and has to properly be applied and rolled on. It needs to have much more precise cutting. It's kind of a bitch, and you'll likely get a few papercuts from the foil edging. The dynaliner will take you a fraction of the time to apply. It's easy.

1969 RS/SS 350 3.31 4 Speed (All Original)
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