under coating - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tobins 52 gmc · 01-14-2011, 10:52 PM

What would be a good paintable undercoating

BigJock · 01-15-2011, 03:33 AM

If paintable,you mean 'brushable' I find it hard to see past POR-15.
I've used it extensively on my '50.

If you stick to the manufacturers instructions it works well.
There's the UV sensitivity issue,but you can overcoat it.
It flows out to a real nice gloss,covers well and is as hard as nails.

I painted the underside of my cab and fenders etc, as I figured if the sun gets to them i've got bigger problems to worry about.
I fully intend to keep my truck right side up!

I'm not a huge fan of the textured undercoats,my logic being the rough finish provides a 'key' for the crud and crap to stick too,whereas a glossy finish can be blasted clean with a power washer.

IMO it looks better too.
Just my 0.02c

01-14-2011, 10:52 PM	#1
tobins 52 gmc tobins 52 gmc Join Date: Dec 2007 Location: Holland landing ,ont, Can Posts: 193	under coating What would be a good paintable undercoating

01-15-2011, 03:33 AM	#2
BigJock Registered User Join Date: Aug 2010 Location: Dundonald, Scotland Posts: 120	Re: under coating If paintable,you mean 'brushable' I find it hard to see past POR-15. I've used it extensively on my '50. If you stick to the manufacturers instructions it works well. There's the UV sensitivity issue,but you can overcoat it. It flows out to a real nice gloss,covers well and is as hard as nails. I painted the underside of my cab and fenders etc, as I figured if the sun gets to them i've got bigger problems to worry about. I fully intend to keep my truck right side up! I'm not a huge fan of the textured undercoats,my logic being the rough finish provides a 'key' for the crud and crap to stick too,whereas a glossy finish can be blasted clean with a power washer. IMO it looks better too. Just my 0.02c



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