What is the easiest way to remove old undercoating? Thanks!
How to remove old undercoating? (1 Viewer)
- Thread starter Megadiesel
- Start date
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well this is just one guy talkin' but i think the answer might be;
1, a bottle of whiskey...i know any booze will do but whiskey seems both sophisticated and low-brow at the same time
2, white zombie.....or any music that makes you wanna be aggressive
3, hours of time... need i say more
now in addition to any of the above mentioned items a wire wheel might do wonders.also... i'm going through the same thing. i couldn't help notice that where the P.O. had let all kinds of stuff leak( oil, maybe brake fluid,who knows) the undercoating was softer and a scraping tool went through pretty easy.
if you do find a quick and easy method let me know!!!
good luck!!!
P.S. it seems that undercoating is a blessing and a curse....
if it does have any,i mean any opening it will trap moisture and make things rust faster. but does do an acceptable job of protection if sealed properly, anyone out there have anything to add?
1, a bottle of whiskey...i know any booze will do but whiskey seems both sophisticated and low-brow at the same time
2, white zombie.....or any music that makes you wanna be aggressive
3, hours of time... need i say more
now in addition to any of the above mentioned items a wire wheel might do wonders.also... i'm going through the same thing. i couldn't help notice that where the P.O. had let all kinds of stuff leak( oil, maybe brake fluid,who knows) the undercoating was softer and a scraping tool went through pretty easy.
if you do find a quick and easy method let me know!!!
good luck!!!
P.S. it seems that undercoating is a blessing and a curse....
if it does have any,i mean any opening it will trap moisture and make things rust faster. but does do an acceptable job of protection if sealed properly, anyone out there have anything to add?
I would look for a marine stripper. Apply let set, then powerwash it off. It should work fine.
I just went through this and I found the stripper to be only partially useful, and it ended up just being a sticky mess half done.
buy an angle grinder and a few wire wheels, get a mask, some goggles and enjoy.
buy an angle grinder and a few wire wheels, get a mask, some goggles and enjoy.
thecrazygreek
A.K.A. TheCraftyGreek
heat gun ( a real good one) and scraper are the best..
Damn...that's a good tip re. the heat gun!
Thanks!
Thanks!
Make the coating get cold like wait until Feb. or get some dry ice. Once the coating is hard you can wack at it with a hammer and it will come off in chips like old pealing paint. Least that worked for me when I lived in Boston...
x2 on the Harbor Freight heat gun being a good tool. I have not tried to remove undercoating with one though...
Nick
x2 on the Harbor Freight heat gun being a good tool. I have not tried to remove undercoating with one though...
Nick
None of those. Use dry ice. Place the dry ice chunks on the undercoating for a couple minutes and it scrapes right off with a scraper with little elbow grease and it comes off in big chunks. Learned this on a restoration forum. I was amazed at the ease. It is difficult if the undercoat is upside down (underside) but it still works.
Two posts from my trailer build:
https://forum.ih8mud.com/4789544-post79.html
https://forum.ih8mud.com/4789553-post80.html
Two posts from my trailer build:
https://forum.ih8mud.com/4789544-post79.html
https://forum.ih8mud.com/4789553-post80.html
down to the co op and rent one of these
High powered pressure washer with a 0 degree tip worked for me.
sand blasting 
I agree w/ texx and crazy geek just a heat gun and some time, tried it today on mine and worked alot better than abrasives or chemical strippers
sand blasting
Have you actually tried this? Sand blasting rarely does anything more than scuff the surface of undercoating unless you have some SERIOUS equipment.
Heat Gun undercoating remova;
Yea tried it and works great, did some more tonight after I removed my tub, Captain Morgan helps keep you company since this is DIY and takes more time compared to paying a sandblaster a lot of $$$ for some fun in the sun, (disclaimer rum and heat guns do not mix but maybe Shiner Bock is more forgiving) anyways get more intimate with my rig and time well spent
Yea tried it and works great, did some more tonight after I removed my tub, Captain Morgan helps keep you company since this is DIY and takes more time compared to paying a sandblaster a lot of $$$ for some fun in the sun, (disclaimer rum and heat guns do not mix but maybe Shiner Bock is more forgiving) anyways get more intimate with my rig and time well spent
The heat gun or even a propane torch works well. If you heat up the metal from the back side rather than the undercoating itself it relases the undercoat extremely well. This works for seam sealer as well if you ever have to replace a welded on panel.
Are you talking the tar or the sealer?
I scrapped the entire bottom of my 60 including the inner fenders to find any hidden rust, we used a 1 1/2" scraper.
I found like the others have said, the colder the better.
I scrapped most of the tar off first, then used lacquer thinner and or varsol on a rag to get what was left.
Went back after and got the sealer that was left, again with the scraper, but for that the varsol didn't work, just the lacquer did.
Took my son and i over four days.
MANY HANDS MAKE LIGHT WORK. Take it to heart!
I scrapped the entire bottom of my 60 including the inner fenders to find any hidden rust, we used a 1 1/2" scraper.
I found like the others have said, the colder the better.
I scrapped most of the tar off first, then used lacquer thinner and or varsol on a rag to get what was left.
Went back after and got the sealer that was left, again with the scraper, but for that the varsol didn't work, just the lacquer did.
Took my son and i over four days.
MANY HANDS MAKE LIGHT WORK. Take it to heart!
