duct insulation for truck ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NYC-10 · 01-18-2009, 09:31 PM

what do you guys think about this stuff?If has glue on 1 side and it's kinda like dynamat but lighter.found it at home depot $18 a roll

tcb-1 · 01-18-2009, 09:43 PM

I don't see why it wouldn't work.

However, you may try a piece on piece of sheet metal, heat it up a bit on the backside with a heat gun or torch, and see if it stinks or if the glue gets runny.

but like I said, it should work and your not paying for the Dynamat name!

NYC-10 · 01-18-2009, 09:54 PM

do you think the cab floor would get as hot as a heat duct?

tcb-1 · 01-18-2009, 10:02 PM

more than likely, hotter. especially if your running headers or a modded out mill.

is there a temperature rating on the packaging?

got to remember that ductwork is much thinner sheet steel and can dissapate heat faster. the floor will tend to soak heat up and store it, and in turn gets AND stays hotter for longer.

enough for the metallurgy lesson!

**special-K** · 01-19-2009, 08:50 AM

I think it will get mashed down and not insulate with no loft.It will only serve to absorb and retain moisture...not good.Step away from the duct insulation.

**LockDoc** · 01-19-2009, 09:21 AM

Quote:

Originally Posted by special-K

I think it will get mashed down and not insulate with no loft.It will only serve to absorb and retain moisture...not good.Step away from the duct insulation.

K: Not to rain on your parade so early in the morning but just about anything you put in there will retain moisture if it gets wet and isn't vac'ed/dried out, including a rubber mat with a jute back or carpet, with or without a jute back. I'm not familiar with Dynamat or duct insulation but if both or either are a closed cell product I wouldn't be afraid to use them. They wouldn't absorb moisture as much as the carpet "or" jute backing.. I don't have a clue if, or how much either would mash down.

Just my 2¢ worth.

LockDoc

Gray Ghost · 01-19-2009, 09:26 AM

I've got it in mine. The floor never gets that hot even with headers and pipes right below. It has held up well over the last 3 months without crushing and it helps with road noise considerably. I'll be using it in the stepside as well when it's time.

No doubt that Dynamat is better for sound and insulation, but they are very proud of that product!

Myself · 01-19-2009, 11:30 AM

I also have the "Reflectix" aluminum bubble wrap on the floors of 2 vehicles. It works great for keeping out the header heat.

NYC-10 · 01-19-2009, 01:17 PM

this frost king stuff is not bubble wrap, its 1/8 foam with foil

**special-K** · 01-19-2009, 05:42 PM

Quote:

Originally Posted by Myself

I also have the "Reflectix" aluminum bubble wrap on the floors of 2 vehicles. It works great for keeping out the header heat.

That won`t hold moisture.

01-18-2009, 09:31 PM	#1
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	duct insulation for truck ? what do you guys think about this stuff?If has glue on 1 side and it's kinda like dynamat but lighter.found it at home depot $18 a roll Attached Images __________________ SCREAMIN EAGLE

01-18-2009, 09:43 PM	#2
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: duct insulation for truck ? I don't see why it wouldn't work. However, you may try a piece on piece of sheet metal, heat it up a bit on the backside with a heat gun or torch, and see if it stinks or if the glue gets runny. but like I said, it should work and your not paying for the Dynamat name! __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

01-18-2009, 09:54 PM	#3
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	Re: duct insulation for truck ? do you think the cab floor would get as hot as a heat duct? __________________ SCREAMIN EAGLE

01-18-2009, 10:02 PM	#4
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: duct insulation for truck ? more than likely, hotter. especially if your running headers or a modded out mill. is there a temperature rating on the packaging? got to remember that ductwork is much thinner sheet steel and can dissapate heat faster. the floor will tend to soak heat up and store it, and in turn gets AND stays hotter for longer. enough for the metallurgy lesson! __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

01-19-2009, 08:50 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: duct insulation for truck ? I think it will get mashed down and not insulate with no loft.It will only serve to absorb and retain moisture...not good.Step away from the duct insulation. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

01-19-2009, 09:26 AM	#7
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: duct insulation for truck ? I've got it in mine. The floor never gets that hot even with headers and pipes right below. It has held up well over the last 3 months without crushing and it helps with road noise considerably. I'll be using it in the stepside as well when it's time. No doubt that Dynamat is better for sound and insulation, but they are very proud of that product! Attached Images __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

01-19-2009, 11:30 AM	#8
Myself Registered User Join Date: Oct 2005 Location: Northern Arkansas Posts: 1,166	Re: duct insulation for truck ? I also have the "Reflectix" aluminum bubble wrap on the floors of 2 vehicles. It works great for keeping out the header heat.

01-19-2009, 01:17 PM	#9
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	Re: duct insulation for truck ? this frost king stuff is not bubble wrap, its 1/8 foam with foil __________________ SCREAMIN EAGLE



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