- Antrim Northern Ireland
Im stripping my Moggy Truck down for its second restoration in my ownership. I put a new chassis on it back on 89 & the chassis arrived sprayed with hammerite, (yeah i know its junk) Anyway i stripped all the hammerite off as it was too brittle & was chipping off in sheets.
The whole chassis & underside of the car was done with two pack zinc rick epoxy & epoxy pitch made by a local supplier Hamptons paints (long gone). It has protected the truck well but after 29 years its starting to lift here & there, the metal is good underneath It just seems to have gone hard & brittle & chips off easily, stripping with the power scraper is easy.
Now i hear great things about Jotun 87 & am liking the idea of using that. I have used jotun paints on boats several times so am familiar with the stuff
Has anyone used the Jotun zinc rich epoxy as a first coat or is this overkill? Im 59 now & dont want to have to do it again!
They do and I have.
Jotun Barrier 90.
It's great stuff but needs better prep than the 87 / 90 type so ideally grit blasted before application, if that's done it will last 20 years in highly corrosive environments like marine, so should be fine for your job.
If you can't blast or bristle blast which is the recommended mechanical prep, I'd use 87 or 90A which has added aluminium that gets you most of the performance of the epoxy zinc, but is nicer to use doesn't need as much prep (but the better the prep the better the performance) and it's cheaper.
If done right you shouldn't need to worry about doing it again.
It's what I did on my alfa project and the thread gives a reasonable amount of detail on the process.