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babablacksheep

Mower Deck Undercoat

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gravey72

I use por 15 on the underside and have even done the whole thing. It holds up really well, a quart is about $40 and you can apply with a cheap brush and it levels out pretty nice(not that it matters much on the underside). 

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jackcobb

Glad to hear you have good luck with the POR 15. I did it to the underside of two rusty push mower decks and then posted along with pictures on the Briggs Facebook site. Got blasted by a couple users saying it won’t hold up. I will say the supplier I bought the POR from said it MUST be rusty. It won’t work applied over paint. I did have to remove a couple runs out of the tops of both decks. The run over the painted deck that has been waxed at times, basically peeled off with my fingernail. The run on top of the rusty deck, I had to sand off. And I mean really sand!

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TomSchmit

Over the years on this site, many people have reported good results with the POR product. For myself, I do not find it necessary to coat the decks with expensive stuff. I do not cut wet grass so there is very little accumulation under my decks. Simply scrape a little and paint with used oil is all that has been needed to keep then rust free. If it is a very dry year, that is not even necessary. Of course, if you are starting with a rusty unit, it will be a different story!

Tom

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gravey72

Biggest thing I found with the por15 is you need the 2 coats as stated in the directions. I still cheat with the directions as far as their pre cleaner goes etc. I used years ago and didn't add the second coat and it did not adhear well. I've had great luck with it, there are different products available for different applications such as applying to bare metal, top coat etc. I'm glad the fluid film was mentioned also, you can use that stuff on just about anything, I've sprayed it right over paint to fight off the salt, lube hinges etc

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