Rubberized undercoating
Thread Starter
Instructor
Joined: Mar 2006
Posts: 119
Likes: 0
From: Albuquerque NM
Rubberized undercoating
I just picked up some 3M Professional Grade undercoating for my frame off rest, does anyone have any experience with any type of undercoating? Recommendations/thoughts appreciated. thx in advance!
Burning Brakes
Joined: May 2014
Posts: 1,094
Likes: 16
From: Los Angeles California
I used it looks cool but where the sun hits it, it turns brown Idk if its just me. But it looks real sweet when first done still looks good but as I mentioned some small areas are baked and on the frame it also discolored a tad.
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
I used undercoating on mine, but ONLY in the wheel wells. Here it will provide a sound barrier and distribute the impact of any road debris you pick up. I have seen where such an impact can put a star of tiny cracks in the paint on the top of the front fender.
I did not apply it to the frame or any metal surface where I was concerned about rust. Undercoating will continue to dry out, lose its flexibility and eventually form small cracks. Water will penetrate and the undercoat will actually hold it next to the metal - giving you the rust you were trying to avoid.
I used POR-15 (inside and out) on my frame and my birdcage. Hopefully this will hold the devil rust at bay.
I did not apply it to the frame or any metal surface where I was concerned about rust. Undercoating will continue to dry out, lose its flexibility and eventually form small cracks. Water will penetrate and the undercoat will actually hold it next to the metal - giving you the rust you were trying to avoid.
I used POR-15 (inside and out) on my frame and my birdcage. Hopefully this will hold the devil rust at bay.
Team Owner
Joined: Sep 2006
Posts: 31,172
Likes: 4,250
From: Westminster Maryland
Hi bmx,
I've used the 3M undercoating and spray some Krylon #1613 over it to keep it very black looking.
I've used it just sparingly in some areas of the wheel wells, and none at all on the frame.
Regards,
Alan
I've used the 3M undercoating and spray some Krylon #1613 over it to keep it very black looking.
I've used it just sparingly in some areas of the wheel wells, and none at all on the frame.
Regards,
Alan
Last edited by Alan 71; Sep 6, 2014 at 07:07 AM.
Racer
Joined: May 2013
Posts: 421
Likes: 6
From: Chicago IL
I love the stuff! Not only did I use it in the wheel wells, but I also use it on the frame (but only after you sand and coat with a protective enamel).
Here is a before photo. I sanded/ground down the frame, cleaned and then painted with a semi gloss protective enamel. After that, I used the rubberized undercoating. Not only does it add extra protection to the enamel, but the sound deadening is unreal.
Before:
After:
Here is a before photo. I sanded/ground down the frame, cleaned and then painted with a semi gloss protective enamel. After that, I used the rubberized undercoating. Not only does it add extra protection to the enamel, but the sound deadening is unreal.
Before:
After:
Thread Starter
Instructor
Joined: Mar 2006
Posts: 119
Likes: 0
From: Albuquerque NM
Nice pics Jartanyon, thx everyone! I'll keep it off the frame and just on fiberglass. I'm a little bummed about discoloration and minor cracking, but looking forward to sound deadening.
Melting Slicks
Joined: Apr 2006
Posts: 2,084
Likes: 14
From: Airdrie Alberta
I used the Black rubberized Rockgard as it is a bit tougher, can be pressure washed, painted etc and is easy to freshen up wheelwells later on.
Been driving with mine for 6 years and is still holding up well.
Been driving with mine for 6 years and is still holding up well.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
did this reduce cabin, or road noise ?
I plan to do this and add the inside floor insulation.
debating if I should use this type of product on both interior, and exterior.
I will only be using this on the Fiberglass areas.
I plan to do this and add the inside floor insulation.
debating if I should use this type of product on both interior, and exterior.
I will only be using this on the Fiberglass areas.