boot floor rust - again

When I replaced mine it was raining and all the side panels were removed.....OS rear window was leaking...go figure.

mickt wrote: Poor quality steel (Chinese)I fancy!

+1

This is defo the answer. Especially if the oxidisation started before the steel was used.

2 days after painting - it's started already .......... rusty drops

and no it's not dog wee, she hasn't been in the car since it was done, still a mistery where it's from :huh:

I wonder is it from using pressure washers, many people use them after mud runs.. perhaps the mastic seams are dislodged or broken down by them.

BGBrit.

How about trying that primer/sealer used for painting ships I'll try and find the thread on the forum later

What does it look like underneath the bit you are painting? I am not a fan of hammerite it use to be good stuff but was bought out and like so many products does not seem to contain the "good stuff" it once did, the sub frames on my last car I stripped and sprayed with epoxy mastic (brushes on too) and that appears to hold up well and was good as far as not being damaged easily when reassembling things, got it off Ebay Rust busters epoxy mastic. Underneath my Jimny I intend to wait until next summer when hopefully we will have a long hot summer! and I want to wire brush underneath and paint with waxoyl underseal (it is a mix of wax and underseal) then I use a small pump action bottle(like you get for less than £1 to mist plants) with some cavity wax to wax everywhere hoping the wax will creep into all the places not easily seen, unfortunately the only real way to deal with rust is to cut it out and weld new in.