6 replies to this topic

[smyrk]

Hi all i am going to be starting a project soon and i have been reading through some projects on here for inspiration i was jusrt wondered how to replicate the texture finish on the underisde of the car befroe spraying the colour coat. thanks for your time

[TA2DMAC]

That rough texture is undercoat or rockguard. It prevents rusting and chipping. It can be painted over.

[ibrooks]

There are a couple of options (and a couple of variations of each).

Bituminous coatings generically called underseal or schutz (or incorrectly schultz). Personally I'm not a fan of these as they tend to harden with age and come away from the body - then water gets between the coating and bodywork with predictable results.

Rubberised coatings - stonechip is the most common generic name. Well "rubberised coatings" sort of says it all really doesn't it? They tend to stick a bit better and age better. You use pretty much the same equipment and methods to apply them so for me it's a bit of a no-brainer. The only possible gotcha is that they are caried in a solvent rather than oil base so you can have more reaction problems with other paints.

Iain

[smyrk]

There are a couple of options (and a couple of variations of each).

Bituminous coatings generically called underseal or schutz (or incorrectly schultz). Personally I'm not a fan of these as they tend to harden with age and come away from the body - then water gets between the coating and bodywork with predictable results.

Rubberised coatings - stonechip is the most common generic name. Well "rubberised coatings" sort of says it all really doesn't it? They tend to stick a bit better and age better. You use pretty much the same equipment and methods to apply them so for me it's a bit of a no-brainer. The only possible gotcha is that they are caried in a solvent rather than oil base so you can have more reaction problems with other paints.

Iain

Cheers mate can The stonechip be sprayed over then, is there any particular one you use?

[ibrooks]

Yes - most stonechips are designed to be overpainted. As for brands - I've used Tetrosyl and it seems good. It has a shelf life though and some of the stuff in it settles out to the bottom of the bottle so whilst it'll still slosh when you shake it some of the stuff is actually in a lump at the bottom of the can/bottle. Make sure there's a date code on the stuff you buy and that it's within the last six months or so. Don't be tempted by cheap cans of old stuff.

It comes in aerosols too - not sure how similar these are.

Iain

[smyrk]

Yes - most stonechips are designed to be overpainted. As for brands - I've used Tetrosyl and it seems good. It has a shelf life though and some of the stuff in it settles out to the bottom of the bottle so whilst it'll still slosh when you shake it some of the stuff is actually in a lump at the bottom of the can/bottle. Make sure there's a date code on the stuff you buy and that it's within the last six months or so. Don't be tempted by cheap cans of old stuff.

It comes in aerosols too - not sure how similar these are.
O you
Iain

Sorry for al the questions mate do you spary it out of a proper soray gun? What size tip do you use (im just gettin into spraying) cheers

[ibrooks]

You spray it with a "schutz" gun the same as you would with underseal. The name is a bit of a mis-nomer as you can use them for several things.

http://www.ebay.co.u...=item53eb5bfe05

Iain