Retroanaconda Posted June 30, 2021 Share Posted June 30, 2021 Morning all, Will be starting work on preparing the galvanised bulkhead for painting this weekend. As part of the pre-galvanising preparation I had to remove all the seal sealer and I would like to reapply, but am unsure what stage in the process it is best to do this. My assumption at the moment is: 1 - clean and degrease 2 - t-wash 3 - seam sealer 4 - etch primer and paint Any recommendations for seam sealer itself? There seem to be brushable types and ones applied with a skeleton gun. Quote Link to comment Share on other sites More sharing options...
L19MUD Posted June 30, 2021 Share Posted June 30, 2021 I can't comment on the seam sealer but that is the exact order I would do it in Quote Link to comment Share on other sites More sharing options...
MichaelE Posted June 30, 2021 Share Posted June 30, 2021 I see no harm in using the etch primer before the seam sealer. The primer is thinner and will seep in to crevices that sealer will not. Even paint over the primer too before using sealer, and paint the sealer afterwards. I've used brushable seam sealer from Buzzweld. If you use a gun you're still going to want to smooth it down and force it in to gaps so you may as well just use brushable. A tin may be better value. I avoid guns where possible because of the hassle of trying to seal the nozzle and stop it hardening when left for a while. Quote Link to comment Share on other sites More sharing options...
Maverik Posted June 30, 2021 Share Posted June 30, 2021 So I just looked back at my photos when I replaced my bulkhead in 2019, I can't find any pictures of me seem sealing it, memory serves I might have put a wee bit in a few obvious holes, but the galvy has pretty much done the job of the sealant and closed up most of the awkward gaps. Will be 2 years since doing it and I've had no leaks etc. Quote Link to comment Share on other sites More sharing options...
Litch Posted June 30, 2021 Share Posted June 30, 2021 Likewise, I had my bulkhead galvanised back in 2013 and I have never noticed any ingress between seams. Quote Link to comment Share on other sites More sharing options...
mat2495 Posted June 30, 2021 Share Posted June 30, 2021 If you stick with your planned order of operations, I would test the etch primer on a bit of seam sealer, just on some scrap or something. I only mention it as the last time I did something similar the seam sealer didn't like it very much, and the whole lot stayed kind of tacky. Not sure what sealer that was however, as it was on something I bought. As for a specific seam sealer I've been using a Tetrosyl brushable one, pretty happy with it so far, but its only 6 months to a year old. Quote Link to comment Share on other sites More sharing options...
oneandtwo Posted July 1, 2021 Share Posted July 1, 2021 I used brushable tetrosyl and similar specific seam sellers ten or so years ago and wasn’t that impressed with it, seemed to shrink over time. Best thing I have found is Soudal Carbond, not sold as. Assam sealer as such but is excellent - I have done a number of bulkhead with this now with no issues and completely overpaintable. Quote Link to comment Share on other sites More sharing options...
smallfry Posted July 1, 2021 Share Posted July 1, 2021 Bit late, but etch prime first then seam sealer. All new vehicles are done this way. As said , galv will seal most small gaps, but seam sealer stops dirt and grit as well, and looks "proper" Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted July 1, 2021 Author Share Posted July 1, 2021 Ok, thanks folks. If some of the painting process needs to happen first then I’ll have to speak to the guy doing the painting and see what his thoughts on it are. Quote Link to comment Share on other sites More sharing options...
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