Another Wurth stone guard question!!
 

I am preparing to repaint some of the underside of my car and want to do some stone guard repairs. I am referring to the rubberised paint not the decals that stick to the rear guards.

It seems that the 'correct' way to do this is use an SKS gun (which I have access to), screw in some Wurth Stone Guard and spray on - following some good prep of course.

In a few spots the original stone guard has peeled off or been slightly damaged by general wear and tear. The peeling is only minor and rust does not seem to have crept in. There are actually only a couple of places where the peeling is not much bigger than 1/2 inch circle. Sorry no pics of this but I'm sure you get the idea.

The question I have though is that the original stone guard appears to be beige whereas I expected it to be grey. Can anyone confirm that beige was used by the factory? My car is an 83 Euro 911SC. I know it will be covered by body color but I would prefer to stay as true as possible.

I have also been told to lightly spray top color as this is what the factory did.

porsche uses beige chip guard for there lower oe color . 3M makes the color your looking for .

Just the answer I needed - thanks very much. Can you confirm which is the right product as there appears to be a range of similar applications?

The Wurth Underbody seal # Art.# 0892 091 Beige appears to be what the factory used NOT the Underbody Seal, Black which is a Bitumin/rubber product and don't use the SKS Schutz gun as it makes a different texture more for bed liners.


Lorne M.

Thanks Lorne. I'll try and get hold of some of this stuff.

If the paint on your car was a darker color you could always use the Wurth Underbody Seal in Black rather that Beige (not to confuse you but Wurth makes an UnderBody Seal in Black, Grey and Beige as well as an Underboy Seal Black which is the wrong product completely)

If you are going to paint over the Wurth product any ways, I have a unopened litre the Underbody Seal in black


Lorne M.

Thanks Lorne. I'll try and stick with Beige but I appreciate the offer.

FYI, Beige is NLA from Wurth. They have grey and black only.

Here is a link:
Texture and Rocker Coatings

Hi everyone,

I'm very interested in this too as I'm restoring my 930. The Wurth products are confusing because there are 3 options and all say they protect from stone chips. But according to the various car shops and Wurth sites, as far as I can work out, neither the wax nor underbody seal black are what were used originally. Neither are paintable and Art # 0892072 Underbody Seal Black is made from bitumen/rubber resin.

I have a rubberised coating underneath and inside on my floor. Both are thick and I think they're Art # P0892071 Stone Guard Black. See this link

https://shoponline.wurthusa.com/wurthusa/servlet/CyberVendor/category/G0292781/catalog/group.jsp/

Grey I can't find in the UK so I'll have to paint over black (my car is white). Does htis help or confuse and am I right in my assumption that Wurth Stoneguard was used on both sides of the floor?

I've emailed Wurth for clarification on classic Porsches. If they reply I'll let you know.

Wurth under body coating AKA Stone guard is available in three formats

SKS Stone guard a newer water based formula that creates a rougher/ more pebbled texture.

SKS is a version of the OEM product used on later model European cars ( 80's on) and is usually available in the three colors Black, Grey and beige.

There is also a Stone Guard Spray that is Paintable and Bitumen free.

Underbody Seal is a PAINTABLE body coating with similar results as the SKS but is solvent based and is the type of coating used on older European cars. this product is used by those who are looking for Historical accuracy.

Underbody Seal is usually available in the three colors Black, Grey and beige.

The Underbody Seal, Black is a totally different product and is that rubberized Bitumen that was usually applied by the Dealer to appease the North American market.

Most of the correct info was sent to me and posted earier by Matt DuBois AKA Islandman PA who was at the time a Manager for Wurth Service Supply

I have used the Underbody Seal on the bottom of my floor panels and where I applied it well, I couldn't tell it from the original coating from the factory.

Lorne M.

I contacted Wurth today and they informed me that they no longer have any Beige product. I specifically asked about SKS, Stoneguard and Underbody Seal. The most recent product they had was art#0892070 (Aerosol Stoneguard Beige) but this was NLA 6 months ago.

At least this is what Wurth told me.

I will try to source the 3M option as I am only looking at touching up some spots underneath and not doing a complete respray - this is why I am trying to get the factory beige.

It is likely that I am going to do a full spray on the wheel arches though so I'll be happy with the grey option. I will be spraying body colour over the top. Any advice on this process (ie. primer, clear coats) will be welcome.

I am dealing with 27 years of road grime that is very hard to remove so without blasting the wheel arches it looks like hours and hours of elbow grease!

Finally got to applying the SKS. Would have been easier with the body on a rotisserie but still managed. I was surprised how easy it was to spray and adjust the gun.

Quite happy with the result so far but I know it's going to look a lot better once I get some body colour on it.

http://forums.pelicanparts.com/uploa...1285034810.jpg

D911SC,

I know it's been a few years since you posted the results (which look great), but I was curious which product you ended up using. Were you able to find the Wurth SKS in Beige, or did you use the 3M product? And what did you use to apply it?

I also have some factory beige SKS I would like to match.

Thanks

Sks
 

I am interested too d911sc ;)

Below is the official line from Wurth Australia...



From: Rowan Storey [mailto:Rowan.Storey@wurth.com.au]
Sent: Tuesday, 12 November 2013 2:51 PM
Subject: Enquiry regarding the Underbody Protection Range

Thank you for your visit to Würth today. I have discussed your enquiry with my colleagues and can confirm the following:

- The Gravel Throw Protection Aqua – 0892 070 100 and 0892 070 200 have replaced SKS 0890 030 and 0890 031;

Hugely late reply I know - I actually didn't see these questions until now.

I never found the beige so went with grey instead. As I was doing the whole underside of the car it looks OK.

I'm now recoating a 964 and once again been looking for a beige product. Spoke to 2 restoration shops and both said that they just use the grey Wurth product (one applies 2 pac clear or colour over the top).

It's a pity beige doesn't seem to be available anymore but I guess grey is ok, or black on early cars.

Cheers,
Darren

Hey Darren

Where you still able to get the gray wurth product in Melbourne? If so where?

I believe the product is still available but under a different name Wurth Gravel Throw. Available for a schutz gun and also aerosol.

Give Wurth a call - they should be able to confirm it:

Melbourne Trade Counter
2/1 Healey Road Dandenong South VIC 3175
Toll Free: 1300 657 765
Fax: 1800 032 396

if you can't fine wurth then you can get U-POL . U-POL is who makes it for wurth so it's the same product .
in the states we can get U-pol at a lower cost them wurth being it's the same thing it's kind of a no brainer to just by the u-pol .

962,

Have you derived or is there a way you know of to tint the U-pol to mimic the Wurth beige?

we use the limco single stage and mix a dark beige color we then add it to the white u-pol and get the color of the old solvent chip guard light beige .
it will not look as yellow as what is on most car because the chip guard on the cars for years will turn more yellow .
it should be just a light beige color (no yellow look to it ) .
the beige mix along with the mix for the fuel tanks I will not tell just what the formulas are .