Under Carpet insulaltion
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by I'm Batman
AAARGH! Reflectix is a heat barrier! Dynamat (and comparable products) are primarily sound deadeners! They do different things! They work TOGETHER to improve the quality of life in the cabin! 
You cannot compare the two. Dynamat and the similar companies' products all make a sound deadener, designed to take the sound wave and 'muffle' it so the panel does not vibrate, and it dissipates it in the form of backwards irradiated heat, which serves a dual purpose...a heat shield. It's like pushing a north magnet to a north magnet. The underside of teh dynamat is expelling heat, so it prevents the absorbsion of heat. That's why someone would want to use Dynamat. Waterproof. Self adhesive. Thin. Sound deadening. Heat prevention.Nuff said?
Now, if all you want is a heat barrier, yes, Reflectix is a prime choice.
Le Mans Master
Joined: Oct 2005
Posts: 9,429
Likes: 44
From: Macon, GA
Great info guys. I'll opt for no sound control. I love to hear the small block.
Reflective insulation for use in a crawl space, attic, wall, metal buildings, and post and frame structures. Fiber free, environmentally safe, easy to install, and it is lightweight. No protective gear needed to install. Reflects 97% of radiant energy.
• Reflects 97 percent of radiant energy.
• Nontoxic/noncarcinogenic.
• Does not require protective gear to install.
• Does not compress, collapse or disintegrate
• Class A Class 1 fire rating
• Durable and lightweight
• Fiber and formaldehyde free
• Controls condensation
• Environmentally safe.
• Does not promote nesting of insects or rodents.
• Lowers heating and cooling costs year round.
• Easy to install.
• Prevents mold and mildew.
• Vapor and radon retarder.
• Not affected by moisture or humidity.
Average Customer Rating
5 out of 5
Reflective insulation for use in a crawl space, attic, wall, metal buildings, and post and frame structures. Fiber free, environmentally safe, easy to install, and it is lightweight. No protective gear needed to install. Reflects 97% of radiant energy.
• Reflects 97 percent of radiant energy.
• Nontoxic/noncarcinogenic.
• Does not require protective gear to install.
• Does not compress, collapse or disintegrate
• Class A Class 1 fire rating
• Durable and lightweight
• Fiber and formaldehyde free
• Controls condensation
• Environmentally safe.
• Does not promote nesting of insects or rodents.
• Lowers heating and cooling costs year round.
• Easy to install.
• Prevents mold and mildew.
• Vapor and radon retarder.
• Not affected by moisture or humidity.
Average Customer Rating
5 out of 5
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
That looks great...justa word of warning from someone who's been there. Be careful about moisture getting under that stuff. It may say it's:
• Vapor and radon retarder.
• Not affected by moisture or humidity.
...but it's still a sealed barrier. Moisture under it will cause all kinds of issues.
• Vapor and radon retarder.
• Not affected by moisture or humidity.
...but it's still a sealed barrier. Moisture under it will cause all kinds of issues.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
That's why, in my car, it's going on top of the Dynamat-type material. If any water does get under it it won't be on any metal. With infinate time and parts cars, I'd install the older fiberglas floor pans in my 77 and never worry about it again. I just need an infinate number of monkeys to do my homework for me... 
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by I'm Batman
That's why, in my car, it's going on top of the Dynamat-type material. If any water does get under it it won't be on any metal. With infinate time and parts cars, I'd install the older fiberglas floor pans in my 77 and never worry about it again. I just need an infinate number of monkeys to do my homework for me...
I know a guy who has guys that will work for minimum...and do it all day long so long as I can keep them busy.
I'm considering it for my next frame off, and let them do all the body sanding, 1500 sanding, and wet-sanding.
Anyway, I'm gonna bed line my floor pans, and then apply some sound deadening...fatMat...and then get some of the new Second Skin Heat Barrier stuff. Good to go.
Instructor
Joined: Jul 2006
Posts: 159
Likes: 0
i put that stuff under my carpet, double thick in some places. honestly i cant tell a difference at all. but with the texas heat and my a/c not working its still gonna be hot. as of now i think it was a waste of time (about an hour). but thats just what i think
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by arctic74vette
i put that stuff under my carpet, double thick in some places. honestly i cant tell a difference at all. but with the texas heat and my a/c not working its still gonna be hot. as of now i think it was a waste of time (about an hour). but thats just what i think
When I drive, the outside air temp is much lower than the oven my feet sit in. I'm gonna do the heat shield mod, and couple that with no back window. Big helps me thinks.
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Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
I have Nuprene to go down over cleaned and painted floor pans, then Reflectix over that. Wrapping the exhaust behind the Ceramic coated headers. Also verifying the heater shutoff valve
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by SIXFOOTER
I have Nuprene to go down over cleaned and painted floor pans, then Reflectix over that.
I've heard lots of good things about Nuprene. Do some pics and testimony stuff with a Nuprene install. I think others would be very interested.
Drifting
Joined: Sep 2004
Posts: 1,625
Likes: 4
From: Miami FL
Yeah....I am seriously thinking about going with Nuprene. The previous owner of my car used something like refletix with foil on each side and plastic air bubbles for insullation. Well....after 10,000 miles of use....all the air bubbles have popped....99% of them in the high traffic foot areas and about 30% of them in the non-high traffic foot areas. My fear is that if I use something like Refletix again that after a couple of years all the air pocket bubbles will be busted and I will have to redo it again. The Nuprene stuff should last a very long time without breaking down and take abuse from my feet stomping on the gas.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by carpedm
Yeah....I am seriously thinking about going with Nuprene. The previous owner of my car used something like refletix with foil on each side and plastic air bubbles for insullation. Well....after 10,000 miles of use....all the air bubbles have popped....99% of them in the high traffic foot areas and about 30% of them in the non-high traffic foot areas. My fear is that if I use something like Refletix again that after a couple of years all the air pocket bubbles will be busted and I will have to redo it again. The Nuprene stuff should last a very long time without breaking down and take abuse from my feet stomping on the gas.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Will do, got to get all the suspension back on it first
Nuprene seems to be good stuff, I guess the plan is to glue it to the pans, firewall etc after cleaning and por15. Will take some time, but it streatches some so a nice smooth custom fit will be possible.
I have the precut pices in there now from ecklers, not even a close fit so thats coming out.
Nuprene seems to be good stuff, I guess the plan is to glue it to the pans, firewall etc after cleaning and por15. Will take some time, but it streatches some so a nice smooth custom fit will be possible.
I have the precut pices in there now from ecklers, not even a close fit so thats coming out.
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
You can put the heat shield under the rug, but I'll bet your "feet in the oven" effect is caused by engine heat coming in thru the passenger vent...I had the "foot oven", I blocked that vent with styrofoam and sealer, installed heater hose shutoff and it's a cool 
ride now...cheap and effective
ride now...cheap and effective
Burning Brakes
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
I assume he's talking about the stock replacement jute/foil insulation that goes under the carpet.
http://www.ecklers.com/product.asp?p...dept%5Fid=1628
they used to sell some other stuff, but i can't find it online this am
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Originally Posted by Durango_boy
You mean the carpet you ordered doesn't fit?
I just looked on the site and can't find it anymore
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Originally Posted by S489
or he could be talking about this stuff:
http://www.ecklers.com/product.asp?p...dept%5Fid=1628
they used to sell some other stuff, but i can't find it online this am
http://www.ecklers.com/product.asp?p...dept%5Fid=1628
they used to sell some other stuff, but i can't find it online this am
I think the nuprene and reflectix is cheaper and a better fit
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by kb2fzq
I blocked that vent with styrofoam and sealer, installed heater hose shutoff and it's a cool.
So you put a stop between the water pump and the heater core? Doesn't that affect flow?
And by doing that, would I still need to block the vent? I'd assume with no hot coolant going through the core that the air blowing past it would be outside temp.
Last edited by Durango_Boy; Aug 25, 2006 at 12:20 PM.