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Old 12-20-2019, 04:36 AM   #1
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Default Priming old putty

What's the best primer for painting old, sound dried putty?
BiN sealer or oil based primer?
I want to make a water seal as well so I was thinking bin sealer (shellac based primer).
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Old 12-20-2019, 06:00 AM   #2
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Quote:
Originally Posted by mv8710 View Post
What's the best primer for painting old, sound dried putty?
BiN sealer or oil based primer?
I want to make a water seal as well so I was thinking bin sealer (shellac based primer).
BIN doesn't do well outside. I'd say a good oil primer would be best as most of those old puddy's are an oil based product. But even a good multipurpose latex like 123 would surely be fine..
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Old 12-20-2019, 09:22 AM   #3
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hahahaha guess what? I'll just use both.

oil based primer to seal the putty and then a coat of my best friend bin sealer to seal the glass edge.
bada bing bada boom
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Old 12-20-2019, 04:46 PM   #4
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I think I would skip the BIN altogether on exterior windows. Really no need for that. About the only thing I would use BIN on for an exterior is spot priming knots in wood.
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Old 12-20-2019, 10:25 PM   #5
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The BIN will dry and become brittle......thus being the weak link in your window painting project.
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Old 12-20-2019, 10:25 PM   #6
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I think I would skip the BIN altogether on exterior windows. Really no need for that. About the only thing I would use BIN on for an exterior is spot priming knots in wood.
Outside, that's all it's spec'd for at the end of the day.
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Old 12-22-2019, 06:18 PM   #7
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thanks for your answers. so is there an exterior paint that will stick to glass?
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Old 12-22-2019, 08:30 PM   #8
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thanks for your answers. so is there an exterior paint that will stick to glass?
Huh? You're painting glass? I mean if you're talking about the slight overlap onto the glass, well, most paints do fine especially with the oil primer also slightly overlapped onto the glass. You are way, way overthinking this.
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Old 12-22-2019, 08:56 PM   #9
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thanks for your answers. so is there an exterior paint that will stick to glass?
Window glazing (glazing putty)? Use Coverstain.

(Coverstain will stick to glass, but remember everything you paint on glass will show from the other side)

Overlap onto the glass with 100% Acrylic Paint 1/16" to seal and keep water out.
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Old 12-22-2019, 09:57 PM   #10
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Thanks for your replies.
I actually don't do a lot of wooden windows these days. mostly is aluminium.

Yes I mean the overlap to keep the water out. Any paint that I overlap will hold till the payment comes through, so why should I care?
jk
It breaks down quite quickly because
1 its hard to stick to glass
2 the water runs down into the crack between the glass and paint and the paint unsticks.
3 the sun dies up the paint

Are you saying that coverstain sticks to the glass and repels all water getting into the crack? They boast that it does but I'm completely sceptical

I'm looking for a sonofabitch of a paint that will not lift off the glass.

Ok full disclosure, the client is a hot milf and I'm trying to hit that, so I want to impress her with my painting skills. The last guys did some mickey mouse thing and its all peeled off the bottom rail of the window on the putty.
So I will use the coverstain as a primer on the putty because it's oily like the putty.

We have an acrylic adhesion primer that sticks to glass and suchlike. surely you have something like that in the USA? or are all the scientists working on the mars rover, and seedless watermelons? and erection pills.

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Old 12-22-2019, 10:25 PM   #11
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further to my previous post
...paint would probably stick very well to the window if some muppet had scratched it from sanding it previously.
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Old 12-23-2019, 06:08 AM   #12
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Just run a bead of acrylic caulking around to seal the crack. That will surely impress the Milf. You da man!
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Old 12-23-2019, 09:25 PM   #13
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"We have an acrylic adhesion primer that sticks to glass and suchlike. surely you have something like that in the USA? or are all the scientists working on the mars rover, and seedless watermelons? and erection pills."

Just about every OIL primer has bonding capabilities to glass. Zinsser latex 123 sticks to anything and other latex primers like Gripper and FixAll do as well. I primed with Fixall Bonding primer and painted a series of windows 10 years ago and they haven't even hinted that they might peel. It was on a car repair shop's windows mainly for privacy.
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Old 12-24-2019, 12:47 AM   #14
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Thanks for your reply. like I say I hardly ever do wooden windows. now I have a big run of them.
Sorry to hear you live in Ohio. Albeit, eastern ohio so that's not so bad. the problem with Ohio is that it is next to Indiana.
tee hee.
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Old 12-24-2019, 10:11 AM   #15
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"We have an acrylic adhesion primer that sticks to glass and suchlike. surely you have something like that in the USA? or are all the scientists working on the mars rover, and seedless watermelons? and erection pills."
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Old 12-24-2019, 10:14 AM   #16
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I have used Aqualock Plus on glass and good luck trying to scrap it off! Stix would be even better. Both are Insl-X products and IMHO, they make the best primers on the market.
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Old 12-24-2019, 07:17 PM   #17
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thanks for your replies.
we have high adhesion primers in our country too. they got sick of importing zinnser/rustoleum products from Yankeeland so they made their own. tee hee.
I have also sanded a thin bead on the glass so it should stick like poop to a blanket.

okay I know i'm being "difficult" how dare I try to be an expert at my job, but what do you reckon, where will the weakest point be? The paint won't come off between the glass and the primer, but do you think it will unstick between the top coat and the primer?
Also, which do you prefer to use , water based enamel or LP (polyurethane enamel)?
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Old 12-26-2019, 11:08 AM   #18
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Quote:
Originally Posted by mv8710 View Post
thanks for your replies.
we have high adhesion primers in our country too. they got sick of importing zinnser/rustoleum products from Yankeeland so they made their own. tee hee.
I have also sanded a thin bead on the glass so it should stick like poop to a blanket.

okay I know i'm being "difficult" how dare I try to be an expert at my job, but what do you reckon, where will the weakest point be? The paint won't come off between the glass and the primer, but do you think it will unstick between the top coat and the primer?
Also, which do you prefer to use , water based enamel or LP (polyurethane enamel)?

For exterior windows? 100% Acrylic Paint.

the topcoat should not separate from the primer. The primer's function is to create a bond between the two surfaces. Please don't sand the glass, seriously.
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