Wurth High Build UnderBody UnderSeal- Review and How-To

Quick update. I gave my Speed3 a much needed bath and decided to blast the undercoating with 1800 PSI, scrub with Meguiar's Degreaser (and a stiff brush) and pressure wash clean.

Absolutely nothing came off. I would assume that durability is going to be limited by the quality of the prep-work as this stuff really seems bulletproof.
 
I have been using this product for a while. I find that if you soak the can in a bucket of hot water before use, it helps with the disbursement of the product and keeps the spray nozzle from clogging. This stuff is thick and zesty! Keep shaking the can often.Works great.This stuff actually dries unlike the cheaper undercoatings. All wurth products are top quality.
 
thanks todd this sounds like a wurthy product. but now i'm torn between this and cg bare bones... which is preferred for longevity.
 
thanks todd this sounds like a wurthy product. but now i'm torn between this and cg bare bones... which is preferred for longevity.

This is a rubberized coating. It will easily outlast barebones by years.... I am planning to use this to re-finish my whel wells as Todd has and then use barebones after washes to darken everything back up.
 
I have been using this product for a while. I find that if you soak the can in a bucket of hot water before use, it helps with the disbursement of the product and keeps the spray nozzle from clogging. This stuff is thick and zesty! Keep shaking the can often.Works great.This stuff actually dries unlike the cheaper undercoatings. All wurth products are top quality.

Thanks for sharing your experience. I agree with your comment about Wurth products, EVERYTHING I have used of theirs is top notch.


This is a rubberized coating. It will easily outlast barebones by years.... I am planning to use this to re-finish my whel wells as Todd has and then use barebones after washes to darken everything back up.

So far (although its fairly new) it hasn't dulled down to the point of needing any dressing. I will keep this thread updated as time goes bye though.
 
Another quick update: I just wash the car last night (after a long drive home) and the UnderBody Under Seal is holding up perfectly with zero wear.
 
Hi Todd,

How does the underseal look like now?

Does this underseal wear away like the traditional undercoats? - does it melt away in kerosene?
 
Hi Todd,

How does the underseal look like now?

Does this underseal wear away like the traditional undercoats? - does it melt away in kerosene?

To be honest I don't have any kerosene handy to test.

I will take some pictures today. It still looks like I just applied it, I couldn't be happier. I still haven't done the other wheel wells, but it sounds like I have a project to complete!!!!
 
I look forward to your update Todd.


I went a different direction on my wheel wells. I got a small can of "roll on" bed liner. I taped off the parts I didn't want to mess up and went to town. Did it all in one day and it looks great. I will have to post some pictures.
 
To be honest I don't have any kerosene handy to test.

I will take some pictures today. It still looks like I just applied it, I couldn't be happier. I still haven't done the other wheel wells, but it sounds like I have a project to complete!!!!

thanks, worth to be included in your tests imo :). petrol based solvents in traditional undercoats are like hot knife in stone cold butter.

I look forward to your update Todd.


I went a different direction on my wheel wells. I got a small can of "roll on" bed liner. I taped off the parts I didn't want to mess up and went to town. Did it all in one day and it looks great. I will have to post some pictures.

actually i am already leaning towards using a roll on bedliner for the under body until i've read about this wurth high build underseal.

the thing that i hate about the traditional undercoats is that while it looks good and black at first, it attracts everything to the point that it becomes dull. one will have to rely on heavy cleaning and dressing just to bring out the original "blackness." in addition, the traditional undercoats don't like petrol based solvents even if fully dried for several years.
 
I'm bumping this thread for todd to follow up on, I've heard its still going strong!

I bought a new truck and the rear wheel wells are bare, no plastic and no coating. I recalled this thread and thought this wurth might work well for this application.

If I spraying it on bare metal, I know I need to prep and super clean the metal. However do I need to apply anytype of prep coating before the high build underbody? Like a primer.......

Cheers,
Greg Nichols
 
Products like this work very well and are not limited to fender wells. Any area, except for the exhaust system, that's prone to rust benefits from rubberized sealers.....

Nice results Todd!! :bigups
 
I'm glad this thread came up today because I was just about to pull the trigger on some rustoleum underbodyc oating over the weekend for the truck. I'll probably just give this stuff a try but quick question on coverage. How much coverage do you think you could get out of a can? Like 4 wheel wells with only 1 medium sprayed coat, more or less?
 
I'm bumping this thread for todd to follow up on, I've heard its still going strong!

I bought a new truck and the rear wheel wells are bare, no plastic and no coating. I recalled this thread and thought this wurth might work well for this application.

If I spraying it on bare metal, I know I need to prep and super clean the metal. However do I need to apply anytype of prep coating before the high build underbody? Like a primer.......

Cheers,
Greg Nichols

Hey Greg!

My understanding is you do not need a primer of any type. However you would want to clean the surface extremely well with Wurth PrepSolve or a similar paint prep spray.

Take lots of pictures!
 
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