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Painting Interior Roof Sections

Started by john108, December 10, 2007, 06:34:19 PM

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john108

I don't know if the following question should be here or placed in the Interior section??

The interior metal roof had some rust.  I sanded the 3 "flat" areas with a sanding disk attached to a grinder. 
The automotive paint supply that I went to suggested painting the metal with POR-15.  I also called POR-15 and was told that things won't stick to POR-15 unless it is well sanded.
I just painted the roof exterior with POR-15, where the replacement vinyl roof will be installed.  It has been less than a full day and the POR-15 doesn't sand well (probably not fully cured and is too soft now).
My Question here is:  Should I paint the 3 interiot "flat" areas with NAPA's Zinc-Rich Primer or POR-15 or Epoxy Primer or ??? .
John

Charger-Bodie

unless the metal is spotless clean the por-15 is the best bet . do you plan on paint the inner roof skin or are you asking that part more about the ext. of the roof?
68 Charger R/t white with black v/t and red tailstripe. 440 4 speed ,black interior
68 383 auto with a/c and power windows. Now 440 4 speed jj1 gold black interior .
My Charger is a hybrid car, it burns gas and rubber............

john108

1-hot68:  Just protecting the interior metal skin, which will be covered by the headliner.
John

Charger-Bodie

Quote from: john108 on December 10, 2007, 07:28:01 PM
1-hot68:  Just protecting the interior metal skin, which will be covered by the headliner.
John

John, in that case id go with the POR-15 or any rust encapsulator. :Twocents:
68 Charger R/t white with black v/t and red tailstripe. 440 4 speed ,black interior
68 383 auto with a/c and power windows. Now 440 4 speed jj1 gold black interior .
My Charger is a hybrid car, it burns gas and rubber............

hemihead

Quote from: john108 on December 10, 2007, 07:28:01 PM
1-hot68:  Just protecting the interior metal skin, which will be covered by the headliner.
John
Did that to mine
Lots of people talkin' , few of them know
Soul of a woman was created below
  Led Zeppelin

bill440rt

Quote from: hemihead on December 10, 2007, 11:30:10 PM
Quote from: john108 on December 10, 2007, 07:28:01 PM
1-hot68:  Just protecting the interior metal skin, which will be covered by the headliner.
John
Did that to mine


Me too! POR-15 on the inside, PPG DP epoxy on the outside.
"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough." Sir Henry Rolls Royce

Shakey

Quote from: john108 on December 10, 2007, 06:34:19 PM
I don't know if the following question should be here or placed in the Interior section??

The interior metal roof had some rust.  I sanded the 3 "flat" areas with a sanding disk attached to a grinder. 
The automotive paint supply that I went to suggested painting the metal with POR-15.  I also called POR-15 and was told that things won't stick to POR-15 unless it is well sanded.
I just painted the roof exterior with POR-15, where the replacement vinyl roof will be installed.  It has been less than a full day and the POR-15 doesn't sand well (probably not fully cured and is too soft now).
My Question here is:  Should I paint the 3 interiot "flat" areas with NAPA's Zinc-Rich Primer or POR-15 or Epoxy Primer or ??? .
John


I covered mine with red oxide primer so the Lizard Skin would stick to it.  I had to do some sanding to remove the glue that held the original insulation up there and to scuff it so the primer would apply nicely, other than that, pretty straightforward.

gasoline_24

Have you already applied the lizard skin?  What did you think of it?  I am thinking of shooting the entire passenger compartment with Lizard skin, but didn't know how it went on or if it was better than dynamat. 

Shakey

Quote from: gasoline_24 on December 14, 2007, 09:39:19 AM
Have you already applied the lizard skin?  What did you think of it?  I am thinking of shooting the entire passenger compartment with Lizard skin, but didn't know how it went on or if it was better than dynamat. 

If you utilize the advanced search feature using key words like interior insulation with my username in either the paint and body or interior sections, you should find a thread where I posted some photos of the application.

john108

I have already hand painted the interior roof area with POR-15.  I know I will need to sand it well for anything to stick to it.
John

bill440rt

Quote from: john108 on December 14, 2007, 02:40:10 PM
I have already hand painted the interior roof area with POR-15.  I know I will need to sand it well for anything to stick to it.
John

No you won't John. POR-15 makes 2 different primers designed to go directly over cured POR-15 for topcoating without sanding. You can use either their Self-Etching Primer or Tie-Coat Primer.

http://www.por15.com/products.asp?dept=3

I used their Self-Etching Primer when I painted the undercarriage on the '69 I'm building, & also on other small parts. It worked great, & the stuff sticks like glue.
:Twocents:
"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough." Sir Henry Rolls Royce

john108

Bill
To glue the insulation to the underside of the roof, I wasn't planning on using primer.  Just sand it and glue the insulation with 3M spray adhesive.
John

bill440rt

You don't need to sand it for the glue to stick either, John.   ;)
Just use 3M's Super-Trim Adhesive in a spray can. Give a coat or 2 each to the roof & the insulation, let it tack up for a minute or 2, then press the insulation to the roof. It will stick.
"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough." Sir Henry Rolls Royce

john108

Bill - When I phoned POR-15, the guy I spoke to said that NOTHING will stick to POR-15, after it has cured, unless you sand it to break the shine.  Even if you want to coat POR-15 over POR-15.  If it hasn't fully dried yet, than you can apply a second coat.  For Safety, I plan on sanding slightly and then follow your recommendation.
John

Shakey

Sanding may be the wrong term being thrown around.  Scuffing would be more appropriate.  True?

john108