insulation/noise reduction

T

trussman

Junior Member
This is my first model A restoration. Having been in construction all my life I am wondering about several ideas. I see some people are using the foil insulation inside the body panels. This is a product we sell for metal roofing, however the foil should be placed outward to reflect the thermal heat from entering the car..
(b) has anyone ever used spray foam to fill voids between the wood and the body panels to reduce the amount of noise and viberation.
c also where can I find pictures or information on placement of the lower door trim and rubber on a murray 155-c.

thanks
Ronnie
 
I have used the foam spray in the seams. I liked it. I used dynomat all over the inside of the body. Makes a huge difference. Comes in big silver sheets.
 
Aluminum foil requires an adjacent air space to become effective.

Aluminum foil works both ways; i.e., to reflect approximately 97% of radiant energy when it faces the heat source, & also equally stops the emission of 97% of radiant energy when it faces in the opposite direction of the heat source.

With no adjacent air space it does not work to halt the transmission of radiant energy. For example, if one places a layer of aluminum foil between two pieces of plywood with no air space, the foil does not provide heat reflection, nor reduce heat emission.

In door spaces & other vehicle spaces, aluminum foil can help to keep heat in a vehicle in winter & reflect outside heat in the summer when provided with an adjacent air space.

Spray foam in doors could collect moisture when driving in rain whereby rain hits side windows & trickles down inside the door void -- a lot of moisture retention in insulation depends a lot on whether a vehicle is in a humid region or in an arid region.

Many vintage vehicles had thick, non-absorbtive sound deadening materials applied to the in-side of the outer sheet metal that would not retain moisture.
 
On my Tudor I found a product at Menards that has foil on both sides with plastic in between that has air bubbles my thought is that it cant trap or hold water like fiberglass. I used 3M #77 spray glue to attach it. So far it seems to have really helped with noise and heat gain / loss. Up north here heat loss can be a bigger deal than gain.
 
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