Need advice on finish for outdoor aluminum signs

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Johnstone
Posts: 11
Joined: Tue Sep 18, 2018 9:11 pm

Need advice on finish for outdoor aluminum signs

Post by Johnstone » Sun Mar 15, 2020 6:25 pm

I'm fixing to do my first outdoor aluminum signs and would appreciate some advice.
They will be single layer cut from .125" Aluminum. The customer would like them to be painted matte black. Any considerations regarding surface prep? Is there a special primer I should use to promote adhesion of the top coat? Thanks!

plasmanewbie
Elite Contributing Member
Elite Contributing Member
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Joined: Thu Jul 24, 2008 11:15 am

Re: Need advice on finish for outdoor aluminum signs

Post by plasmanewbie » Mon Mar 16, 2020 12:10 pm

I clean with a auto body type wax and grease remover and a rag, sandblast the material, blow clean with compressed air (don't wipe with rag or fuzz will stick to your part) and paint. Never had a problem and the finish is tough and very resistant to chipping.

Johnstone
Posts: 11
Joined: Tue Sep 18, 2018 9:11 pm

Re: Need advice on finish for outdoor aluminum signs

Post by Johnstone » Sat Mar 21, 2020 8:48 am

Sounds like a plan. Thanks plasmanewbie.

plasmanewbie
Elite Contributing Member
Elite Contributing Member
Posts: 1026
Joined: Thu Jul 24, 2008 11:15 am

Re: Need advice on finish for outdoor aluminum signs

Post by plasmanewbie » Mon Mar 23, 2020 12:31 pm

:Like :Like

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