seam sealers!

[Swifty101]

Hi guys. Im restoring my car at the moment. I meed a seam sealer that i can stone chip over.

Ive read not to use silicon as its bad and paint wont stick to it?

Ive read that polyurethane is the best!

Help. Im confused. Any links or recommendations of products you have used would be great. Id like to use cartridge.

Al

 

[philhilluk]

I was reading this in a Forum tutorial last night, hope it helps. http://www.mig-welding.co.uk/seam-sealing.htm

 

[Chipper]

'Polyurethane adhesive sealant' or seam sealer, a completely different thing to silicone. You'll find loads of it on the net and your bodyshop supplies place in cartridge form, and brushable form. Sticks fine to bare metal. Can smooth it with thinners if you like, I prefer white spirit, more 'oily' and won't attack paint.

 

[mike 109444]

Swifty101 If you are stuck to find somewhere to get it try Toolstation (bit like screwfix) I've used there pu30 (I think it's called) it's the only polyurethane one they do (comes in tube for gun) about £3-4 ish. Can't say yet how well it stands up to use as still doing my restore

 

[Swifty101]

Thanks mike

 

[Weldinator]

Ive used Tiger seal and it sticks very well, very strong, very flexible and goes on top of stonechip, dont stonechip on top of any sealant because like me you will find it cracks and peels off. Then i used upol clear adhesive on the plastic type stonechip and PU sealant so the paint sticks better, Tiger seal says it can be simply over coated no worries, but i wanted some flex in the coatings.

I got the white coloured tiger seal, so if the paint ever chipped off for any reason then i can top it over.

 

[ColourweldUK]

Also worth considering the Mipa PU400 Sealer, it comes in Grey, White and Black and is generally better priced than Tiger Seal

 

[Chickenjohn]

I've managed to stone chip coat over seam sealer. The key is not to apply too wet a coat at any one time to the seam sealed areas. That way the solvents in the stone chip coat can evaporate before they can break the adhesion. I have a car that was restored three years ago and the stone chip coating and sealer is still fine.

What is important is to over coat the stone chip as this coating is a primer and is porous. I tend to use chassis black paint over stone chip. Seems to work well!