Dynamat installation

[jmark]

I am leaning towards using the Dynamat like barrier instead of just the plastic vapor barrier. Thoughts?

[hls30.com]

It will work fine-been there, done that, I actually applied it to the inside of the door where ever possable, and put sticky to sticky where the door panel was open-much quieter!, but I also ran a second seal on both sides of the window, to keep water out of the door on the outside and air and noise out of the cockpit on the inside. \

Will

[jmark]

MSA sells the OEM plastic for around a $8/door. I wonder if the door panel will fit OK if you put Dynamat on first then the MSA plastic over the top of that? Should make the door much quieter.

[EScanlon]

....stop that pesky drip that you see at the bottom of the door and on the inside skuff plate after a good rain or washing)...

That you're getting water through the door onto the sill, tells me that your drain (weep) holes on the outside portion of the inner metal (where it comes into contact with the exterior skin) may be plugged. Another item to check is the gasket that is attached to the bottom edge of the door, and lastly, make sure that the top "whale tail" gasket at the top front of the door is in fact making contact with the car's body in order to seal there.

Since I did my car, I've not found water where you mention.

Enrique

[Zs-ondabrain]

Like I said earlier this year, you can use it as a vapor barrier. I do it to cars all the time. Whether its covering the whole door panel or just over the obvious holes in the door panel, It will keep out the moisture, deaden a lot of noise, and keep vibration to a minimum.

Vibration is a MAJOR factor when it come to deteriation of moving parts, welds, plastic joints and basic fasteners coming loose and allowing things to fall off.

Any amount of Dynomat that you use on your doors will be an improvement on the existing condition of the door, noise and vibration.

just remember that tar based acoustical mat (Dynomat) is naturally Heavy and WILL add weight to the car. Not drastic but considerable.

Just remember that you can use it almost anywhere that a panel is larger than 12" X 12" you'd be supprised just how noisy one panel can be.

Dave.

[jmark]

Thanks guys. Good stuff.

[beandip]

There is a co. in canada called B-QUIET b-quiet.com they are in the speaker business and auto as well and they have at least 6 different kinds of sound deading materials to chose from. One that I am , or was going to buy is called '' brown bread '' it is a matt that is like dynamat but is foil covered on one side and peal-n-stick on the other and it is also less money than dynomat. Just a thought Mike , the bone breaker , used it in his 240 . There are three different levels of their similar product B-quiet entreme , lite, and brown bread. All of which will not absorb moisture. When you go with the bread , and buy a roll you save some money . Check with B-quiet for the prices as my contat was over a year ago. But I think you can do the whole car complete , roof and all for about $100.00. Gary

[RAZ1]

You can get 100 sq/ft from Fat Man for $99.00

I have a question to anyone that has done this to their car. How much square footage of material did you use?

[Zs-ondabrain]

think of it in simplest form, you typical door on a Z is 2' X 3'? aprox. thats 6 square feet times 2 doors is 12 sq. ft

your floor is 2 sides at about 2' X 5 or 6' depending on how much you want to cover. thats about 20 to 24 sq.ft

the 1/4 panels and hatch are noisy, as is the fire wall and the roof and the spare tire well.

100 feet should cover most of it but like I said, It all depends on what length or extreme you're willing to go.

I worked for CAR-TOYS here in the N.W. for 5 years and have also been doing car stereo for about 15 years or so.

Dave

[jmark]

Dave,

Is it feasible to put a thin Dynamat sheet over each door & then cover it with a clear plastic? Which Dynamat product would work best for the doors? I don't want to cause door panel fitting problems.

[vercingetorix]

I recently did my wifes Karman Ghia with a double layer of fat mat(originally slated for my '71 Z) and used two rolls, works fine. BUT, I have since found that a roofing material called Peel-N Seal is exactky the same as Fat Mat type dampners and is sold by the manufacturers to some sound companies.

I am going to use this on my Z. You can find it at building supply stores like Home Depot or ask for a distibutor near you at their web site, it costs about half as much as fatmat. Just make sure you dont get some other product that doesnt have the metal skin, some companys put out a window sealer with a shiny plastic skin that wont work.

Best,

H Houghton

[beandip]

RAZ1 , Mike G. , when he did his car If I remember correctly he used 35 sq ft. roll of brown bread. He did the whole floor areas and firewall I don't remember if he did the quarter pannels for sure but I think so . We talked about doing the roof , which I am going to do . If my memory serves me he thought that he had enough to do everything except the roof. Send him a PM . Any way the bread comes in a 3' wide roll and you can cut it with tinsnips or large sissors or a razor knife. He was in the process of doing the car when I last talked with him about this stuff and later he emailed a picture.In fact it may be in his gallery. Gary