To thin or not to thin? (Exterior Oil Paint Question)

[McPuccio]

Bought an exterior grade oil paint and was wondering if we should thin the paint before it goes on?

We are done sanding the bus, planning on Ospho-ing the rusty bits and sealing some of the looser looking seams before a full rub-down of mineral spirits. Just wondering if we should thin the paint?

Thanks.

[Rusty]

Where are you? What is the weather like? How are you applying the paint? What brand is it? What color is it? How thin is it?

[McPuccio]

We're in Texas. Weather is pretty clear, but also like mid-50s. We're planning on rolling it on. Color is sage green ("coastal crush").

[Twigg]

Originally Posted by McPuccio

We're in Texas. Weather is pretty clear, but also like mid-50s. We're planning on rolling it on. Color is sage green ("coastal crush").

Paint is usually thinned for spraying. If you are rolling it, it should be fine straight from the tin.

[Rusty]

When I painted my bus, I power washed it w/ phosphate detergent, such as TSP.

Then sanded w/ 220 grit, some use deglosser liquid.

Quick wash, then wipedown with lacquer thinner.

Then primed entire bus.

Then sprayed w/ compressor powered HVLP gun from harbor freight (purple)

You's be wise to use hardener in your paint. Many who roll-on say they wish they'd sprayed.

[Twigg]

I will roll the roof, spray the rest.

[spenceronehalf]

Originally Posted by Rusty

When I painted my bus, I power washed it w/ phosphate detergent, such as TSP.



Then sanded w/ 220 grit, some use deglosser liquid.



Quick wash, then wipedown with lacquer thinner.



Then primed entire bus.



Then sprayed w/ compressor powered HVLP gun from harbor freight (purple)



You's be wise to use hardener in your paint. Many who roll-on say they wish they'd sprayed.



Attachment 16909

How much hardener, Rusty? One can per gallon or something?


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[Rusty]

Originally Posted by spenceronehalf

How much hardener, Rusty? One can per gallon or something?


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No, not much at all. Just mix it it the paint you are spraying immediately in the hour or so.

https://www.youtube.com/watch?v=2uMmNFOH6EY

[spenceronehalf]

cool. I'll just order one can