Sealer before or after zinc primer?

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resto_d1

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As some may have followed I've just started chopping and welding. I have the bilt hamber electrox 90 zinc primer. My initial thoughts were to flappy wheel my welds and surrounding area to get all clean, panel wipe or similar then prime, seal then my epoxy mastik. Is this the correct order as on the lr it seams the seam sealer has been applied prior to any paint I.e to bare metal? I can't guarantee a like new surface so thought I was better off primer first as it has anti corrosive properties. Cheers
 
resto_d1 said:
As some may have followed I've just started chopping and welding. I have the bilt hamber electrox 90 zinc primer. My initial thoughts were to flappy wheel my welds and surrounding area to get all clean, panel wipe or similar then prime, seal then my epoxy mastik. Is this the correct order as on the lr it seams the seam sealer has been applied prior to any paint I.e to bare metal? I can't guarantee a like new surface so thought I was better off primer first as it has anti corrosive properties. Cheers
Click to expand...
LR are not renowned for their rust protection. I once crawled under a brand new Defender in a showroom and it had the first indications of rust on the chassis.
 
resto_d1 said:
As some may have followed I've just started chopping and welding. I have the bilt hamber electrox 90 zinc primer. My initial thoughts were to flappy wheel my welds and surrounding area to get all clean, panel wipe or similar then prime, seal then my epoxy mastik. Is this the correct order as on the lr it seams the seam sealer has been applied prior to any paint I.e to bare metal? I can't guarantee a like new surface so thought I was better off primer first as it has anti corrosive properties. Cheers
Click to expand...

IMHO, only seal where essential - I don't use sealer unless it's a really exposed area like wheel arches... I prefer to let a cavity wax ( BH Dynax S-50 ) do its stuff and penetrate a seam... and retreat the seam regularly.....:)

Seams which need sealing I would definitely prime beforehand - I either use brake cleaner or panel wipe ( whichever is cheaper ) to degrease, and then etch primer...

I'm a big fan of BH products, and have used them for many years with great results. from what I have seen, Dinitrol stuff is comparable ;)... the rest I wouldn't waste my money on!:D

I might suggest that LR's original "corrosion protection", er, "efforts" would be better termed "corrosion promotion", after all, they want you to buy a new one .....:rolleyes:
 
Thanks. It's primarily for over my welds at the moment so I just wanted to seal off the weld. I too am a big fan of their stuff. I haven't cracked open the epoxy yet - not far enough into repairs. Will be at the weekend though fingers crossed. I was planning to get dynax in everywhere which is the bh cavity wax. I just bought some paintable pu sealant for it
Screenshot_20180620-100331.jpg
 
Just painted it all up with electrox! Where I'm welding in sections It's probably easier to paint as I go to prevent rust creeping back in and more surface prep. I guess anything is better than the bran flakes that the sections have replaced!
 
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