PaulJLLD 0 Posted September 3, 2009 Hi Finish seam welding the under side of my car now and will be getting it sandblasted to take off any rusty bits off soon then sprayed with etch primer, should i go around sealing all the seams up before or after i have sprayed it with etch primer? Thanks Paul Share this post Link to post Share on other sites
boombang 2 Posted September 3, 2009 I'd have thought it was important to seal the paint before putting on any sealer - sealer could trap moisture in now or in the future and cause monster rust. On my car I cut out, sanded back, and treated anything rusty, then primed, painted and undersealed. Share this post Link to post Share on other sites
MerlinGTI 3 Posted September 3, 2009 Etch then seam sealer it Share this post Link to post Share on other sites
DamirGTI 327 Posted September 3, 2009 Me thinks that the acid based etching primer underneath the seam sealer is likely to cause lifting of the seam sealer id use epoxy primer or zinc rich primer on all areas where the seam sealer will be applied on top .. anyway , what ever you do , try to avoid sealing surfaces of bare metal with the seam sealer (OE , factory , method is applying seam sealer on top of the base -> e-coat ) Damir Share this post Link to post Share on other sites
PaulJLLD 0 Posted September 5, 2009 Me thinks that the acid based etching primer underneath the seam sealer is likely to cause lifting of the seam sealer id use epoxy primer or zinc rich primer on all areas where the seam sealer will be applied on top .. anyway , what ever you do , try to avoid sealing surfaces of bare metal with the seam sealer (OE , factory , method is applying seam sealer on top of the base -> e-coat ) Damir O.k il etch it then gp from there, thanks guys Share this post Link to post Share on other sites
