Quick seam sealer question (repairing rusty door)

Soldato
Joined
19 May 2005
Posts
18,139
Location
Lancashire
Hi,

Just a quick question regarding the use of seam sealer. One of my rear doors has started to rust on my Focus and Ive found out its due to the seam sealer between the 2 door skins is loose.

The seam has fully come away from the door now so Ive removed all the rust and sprayed it with rust killing primer for now. Ive ordered a tube of PU seam sealer from ebay and not sure exactly how to apply it. Do i apply it to the bare metal or prime it then apply to the primer? I'm hoping its the latter as Ive sprayed 3 coats on today and don't fancy removing it :D.
 
Omniseal 1K-PU car body sealant.

This seam sealer comes in black it is permanent-elastic polyurethane based component sealant, reactive curing, can be painted over with any paint.

we use this seam sealer in our bodyshop and it a very good sealer plus you can bruch it out to make a good job of it.

This is the description of it on the listing, I'm hoping it'll do the job. I'll get the outside of the door sorted by a body shop but the inside needs doing now to stop it getting any worse.
 
Must be possible to remove the door trim and take a look inside?

Yeah Ive had all the door trims off to spray the insides with waxoyl but you can't see down to the bottom as the 2 skins are very close together. From what i could see the insides were coated with something and there was no sign of rust. Its just i read an article on google that said any rust on the bottom of a door will have come from inside?
 
I'll let you know how i get on. I'm not 100% sure thats what caused the rust, it does look that way though.

It sounded like a load of hassle trying to get Ford to do the work so I'm going to have a go myself. Its only on one door at the bottom so hopefully it wont cost to much if this doesn't work.

Oh well next time i buy a car i'll know what to look out for anyway.
 
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