dynamat or reflectix???
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,198
Likes: 0
From: staten island new york
St. Jude Donor '10
dynamat or reflectix???
i'm in the middle of a interior upgrade and before i go to install the new carpets i want to know which is better for keeping the heat out??? also how much do i need and how much$$$ mine is a 79dd
Le Mans Master
Joined: Apr 2004
Posts: 7,106
Likes: 38
From: Newark DE
keep in mind the main differences between the two products.
Reflectix is a foil based product that is designed to be a heat barrier.
Dynamat is an asphalt based product with a primary function of a sound reducer. This is why dynatmat is very popular in the car audio industry. They do offer products that also offer heat barrier properties but the primary design of Dynamat products is for sound dampening.
Based on that, although Dynamat is the best product for what it's designed to do, a product such as Reflectix will be better if your primary goal is reducing heat. Reflectix is also much less expensive although that should only be a secondary criteria for you.
I just helped a friend redo the carpet in his '79 Greenwood and we used Reflectix as a heat barrier under the carpet. He purchased 2 of the 16" wide rolls for a total of approx $38-$40. We used all of one roll and only a little of the second roll.
you will also need approx 1 can of the 3M spray adhesive to put down the reflectix. The 3m spray glue will run you approx $10 a can.
Reflectix is a foil based product that is designed to be a heat barrier.
Dynamat is an asphalt based product with a primary function of a sound reducer. This is why dynatmat is very popular in the car audio industry. They do offer products that also offer heat barrier properties but the primary design of Dynamat products is for sound dampening.
Based on that, although Dynamat is the best product for what it's designed to do, a product such as Reflectix will be better if your primary goal is reducing heat. Reflectix is also much less expensive although that should only be a secondary criteria for you.
I just helped a friend redo the carpet in his '79 Greenwood and we used Reflectix as a heat barrier under the carpet. He purchased 2 of the 16" wide rolls for a total of approx $38-$40. We used all of one roll and only a little of the second roll.
you will also need approx 1 can of the 3M spray adhesive to put down the reflectix. The 3m spray glue will run you approx $10 a can.
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by BarryK
He bought it at Lowe's.
I think it was in the Heating supply section
I think it was in the Heating supply section
One roll did my car with plenty to spare. It's still noisey as hell inside but at least the car is cool to ride in now.
Melting Slicks
Joined: Apr 2004
Posts: 2,008
Likes: 38
From: Space Coast Gator Territory
For added insulation from sound and heat, you could put down Frost King first. It is available at Lowe's and HD, but more expensive per sq ft than Reflectix. FK is about 1/8 inch thick self adhesive foam with foil on one side. The foil provides a good surface for the Reflectix to stick. I covered the underside of my trans tunnel with FK and it worked real well.
Melting Slicks
Joined: Jan 2005
Posts: 3,347
Likes: 9
From: Salinas Ca.
I just ordered 2 box's of Dynamat from Summit 72sq.ft. @ 409 bucks! Summit has the best deal. I already installed Zero Clearance http://www.coolandquiet.com/ under the body, Tunnel & floor. Gonna be cool and quiet!... 
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Pro
Joined: May 2005
Posts: 745
Likes: 0
From: Miami Florida
do it right the first time and use both! i went banannas when i redid the interior. multiple layers of insulation and dynamat. it makes a huge difference. recently, while doing the rear suspension i applied more dynaamat on the outside of the battery/storage area and it got rid of alot of rear and tire hum. spend alot of time when you do it and go up on the firewall as high as you can. multiple layering throughout the tunnel area. have fun
Le Mans Master
Joined: Apr 2004
Posts: 7,106
Likes: 38
From: Newark DE
Originally Posted by 79vetter
Does anyone have some pics of these materials being put down?
the silver stuff is the reflectix
http://69.253.166.197/page1/page104/page75/page75.html
Melting Slicks
Joined: Jan 2005
Posts: 3,347
Likes: 9
From: Salinas Ca.
Here is the Zero Clearance
On the inside: I'g going to install Dynamat and then instead of Jute for the carpet, I'm going to install Lytherm Max from http://www.coolandquiet.com/, should be nice...
On the inside: I'g going to install Dynamat and then instead of Jute for the carpet, I'm going to install Lytherm Max from http://www.coolandquiet.com/, should be nice...
Le Mans Master
Joined: Nov 2004
Posts: 7,186
Likes: 45
From: detroit area
i used extreme dynomat for my whole interior..... it's a sound/heat barrier.... asphalt/foil..... if u use it, make sure u clean the surface from dust/debris and when u lay it all out, go back over it with a heat gun and heat it up and press harder.... it'll soften the ashpalt/rubber and you get a better stick...... i need a few more layers on my rear deck (due to my audio setup)...... check ebay or some smaller shops for it.... the audio stores will charge u an arm and a leg...... i think i ended up spending around 100 bucks (at cost) for 72 square feet i think and i had some left over....
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b
Last edited by onaqwst; Feb 20, 2006 at 10:56 PM.
Team Owner
Joined: Jun 2004
Posts: 20,216
Likes: 4
From: Smile, it's just the internet.
Carpet out, glass prepped:
After Dynamat everywhere and paint in the rear compartments:
After the Dynamat, I laid down a layer of Reflectix on the footwells, firewall, and tunnel.
After Dynamat everywhere and paint in the rear compartments:
After the Dynamat, I laid down a layer of Reflectix on the footwells, firewall, and tunnel.
Pro
Joined: Jun 2005
Posts: 540
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St. Jude Donor '09, '24
I use nuprene for sound deadener. Far superior to asphalt Dynamat and a lot lighter also. Boeing uses this material in jets for sound deadening and 1 sheet weighs less the 1.5 lbs. 1/8" nuprene equals 3/4" of Dynamat for sound suppression, houstonvett
Le Mans Master
Joined: Jan 2000
Posts: 8,721
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From: Canada
Originally Posted by houstonvett
I use nuprene for sound deadener. Far superior to asphalt Dynamat and a lot lighter also. Boeing uses this material in jets for sound deadening and 1 sheet weighs less the 1.5 lbs. 1/8" nuprene equals 3/4" of Dynamat for sound suppression, houstonvett
I like this idea as neoprene . is far easier to work with then the asphalt based deadeners.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Dynamat Xtreme is a great product.
For those worried about added weight and costs, the Frost King works well considering it's lighter weight and low cost:
http://mikemercury.home.att.net/sound.htm
I also lined the inside of the wifes 1973 with this. Made a very noticeable difference. There's a lot of products out there - to fit each persons individual goals.
.
For those worried about added weight and costs, the Frost King works well considering it's lighter weight and low cost:
http://mikemercury.home.att.net/sound.htm
I also lined the inside of the wifes 1973 with this. Made a very noticeable difference. There's a lot of products out there - to fit each persons individual goals.
.
Last edited by Mike Mercury; Feb 21, 2006 at 08:33 PM.
Instructor
Joined: Jan 2003
Posts: 188
Likes: 2
From: Flowermound Tx
Hey guys, dense question here, but when you installed dynamat/reflectix did you glue it down with 3m and then glue the carpet onto the dynamat/reflectix ? I guess I'm asking if each layer is glued to the previous if you have multiple layers ..?
Thanks!
Thanks!
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
another question,
when all that went down, did anyone have trouble with gettingt the console and various interior parts to fit right?
tim
when all that went down, did anyone have trouble with gettingt the console and various interior parts to fit right?
tim