Rubberized Undercoating
09-23-2010, 12:57 PM
#1
Rubberized Undercoating Do people coat the underside of their cars with this coating to prevent rust on the underbody? I want to prevent rust from developing anymore then it already has. Can I coat the whole underside of my car with this or is their other options?
09-23-2010, 03:46 PM
#4
You can do what I've been doing on my '69 Charger: sanding, grinding down as much of the rust away as possible and then treating it with an anti-rusting paint like Zero-Rust or POR-15.
Undercoatings are bad because at some point the coating will start to develop small leaks, cracks, etc. which will have the ironic effect of allowing moisture in and then sealing it in, allowing corrosion and rust to take place and then you won't even be able to see it happening...
Undercoatings are bad because at some point the coating will start to develop small leaks, cracks, etc. which will have the ironic effect of allowing moisture in and then sealing it in, allowing corrosion and rust to take place and then you won't even be able to see it happening...
09-23-2010, 10:07 PM
#5
I cleaned up and sanded down any rust on my undercarriage, then coated the whole thing with rubberized undercoating. The undercarriage looks awesome, looks like a new car! Ive seen my new cars come to my shop with this stuff already applied. Im still gonna get the car Krowned, so I think with those 2 things done she will never rust!
09-23-2010, 11:24 PM
#6
I cleaned up and sanded down any rust on my undercarriage, then coated the whole thing with rubberized undercoating. The undercarriage looks awesome, looks like a new car! Ive seen my new cars come to my shop with this stuff already applied. Im still gonna get the car Krowned, so I think with those 2 things done she will never rust!
09-24-2010, 09:49 AM
#7
I personally did not rubberize the brake and fuel lines... just in case those did start rusting id like to see it before they spring a leak. I just sprayed the lines with Krown, there is good shape already so I don't think they will deteriorate much more with rust proofing on them.
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09-24-2010, 11:08 AM
#9
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You can do what I've been doing on my '69 Charger: sanding, grinding down as much of the rust away as possible and then treating it with an anti-rusting paint like Zero-Rust or POR-15.
Undercoatings are bad because at some point the coating will start to develop small leaks, cracks, etc. which will have the ironic effect of allowing moisture in and then sealing it in, allowing corrosion and rust to take place and then you won't even be able to see it happening...
Undercoatings are bad because at some point the coating will start to develop small leaks, cracks, etc. which will have the ironic effect of allowing moisture in and then sealing it in, allowing corrosion and rust to take place and then you won't even be able to see it happening...
+2 on cracking and allowing water to sit in
09-24-2010, 11:14 AM
#10
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It doesn't seem to make much difference really. I've had cars both ways, and if you drive them in the snow/salt, they will rust, undercoating or not. These cars are low to the ground and the undercarrige picks up enough salt spray to be harmful with or without the undercoating.
My solution was to just buy another F-body that someone else had already driven in the salt and use that for daily driving. Keeps my garage queen in mint condition.
My solution was to just buy another F-body that someone else had already driven in the salt and use that for daily driving. Keeps my garage queen in mint condition.
