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Old 03-22-2017, 05:27 PM   #1
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Default Primer not adhering

I am doing this bathroom re do. It was a more beat up not taken care of bathroom if you know what I mean.

I cleaned all the walls with krud kutter, let dry for a week. Sanded all the walls and then primed with Dulux Xpert Primer.

A day later it is not adhering to the walls, and easily scratches off with a fingernail. I have not used much Dulux yet, and I have heard people say it will stick better with time. but I have never waited long enough to actually find out before sanding the walls back down.

Do you think there will be a chance it will adhere better over time?

Thank you
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Old 03-22-2017, 07:12 PM   #2
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I believe that dulux expert primer is a drywall primer/sealer....for unpainted drywall. Sounds like you are priming over an existing finish..and if its old gloss oil or something of that nature you would have been better with Dulux Gripper as a waterborne bonding primer, if you don't want to use something like Coverstain or Bin. I don't think that you will get satisfactory adhesion with the expert primer.
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Old 03-22-2017, 07:25 PM   #3
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Quote:
Originally Posted by Painter-Aaron View Post
I am doing this bathroom re do. It was a more beat up not taken care of bathroom if you know what I mean.

I cleaned all the walls with krud kutter, let dry for a week. Sanded all the walls and then primed with Dulux Xpert Primer.

A day later it is not adhering to the walls, and easily scratches off with a fingernail. I have not used much Dulux yet, and I have heard people say it will stick better with time. but I have never waited long enough to actually find out before sanding the walls back down.

Do you think there will be a chance it will adhere better over time?

Thank you
Krud Kutter is a degreaser. It has a high pH. I suspect there is some residual residue left on the wall that is burning the primer or softening the bond. Did you rinse the KK?
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Old 03-22-2017, 07:32 PM   #4
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Quote:
Originally Posted by Painter-Aaron View Post
I am doing this bathroom re do. It was a more beat up not taken care of bathroom if you know what I mean.

I cleaned all the walls with krud kutter, let dry for a week. Sanded all the walls and then primed with Dulux Xpert Primer.

A day later it is not adhering to the walls, and easily scratches off with a fingernail. I have not used much Dulux yet, and I have heard people say it will stick better with time. but I have never waited long enough to actually find out before sanding the walls back down.

Do you think there will be a chance it will adhere better over time?

Thank you
Here is a link to the technical data sheet for Dulux Xpert Primer.

https://www.dulux.ca/ppg/dulux/media...n.pdf?ext=.pdf

What type of paint is already on the walls?

futtyos

Last edited by futtyos; 03-22-2017 at 07:33 PM.. Reason: left out something
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Old 03-23-2017, 08:23 AM   #5
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"do not use on aged alkyd surfaces" could be a clue right there.
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Old 03-23-2017, 11:15 PM   #6
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Quote:
Originally Posted by PACman View Post
"do not use on aged alkyd surfaces" could be a clue right there.
I guess it could be?

Or the other smart thing might be to know that Xpert has two primers. One for new drywall and one for alkyd paints

I used the one meant to go over alkyds. And it was recommended by the paint store.
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Old 03-23-2017, 11:17 PM   #7
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Quote:
Originally Posted by PACman View Post
"do not use on aged alkyd surfaces" could be a clue right there.
I guess it could be?

Or the other smart thing might be to know that Xpert has two primers. One for new drywall and one for alkyd paints

I used the one meant to go over alkyds. And it was recommended by the paint store.

https://www.dulux.ca/ppg/dulux/media...s.pdf?ext=.pdf
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Old 03-23-2017, 11:18 PM   #8
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Quote:
Originally Posted by northcountrypainter View Post
I believe that dulux expert primer is a drywall primer/sealer....for unpainted drywall. Sounds like you are priming over an existing finish..and if its old gloss oil or something of that nature you would have been better with Dulux Gripper as a waterborne bonding primer, if you don't want to use something like Coverstain or Bin. I don't think that you will get satisfactory adhesion with the expert primer.
No That is the other primer sealer xpert has

I used the alkyd one

https://www.dulux.ca/ppg/dulux/media...s.pdf?ext=.pdf
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Old 03-23-2017, 11:19 PM   #9
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Quote:
Originally Posted by futtyos View Post
Here is a link to the technical data sheet for Dulux Xpert Primer.

https://www.dulux.ca/ppg/dulux/media...n.pdf?ext=.pdf

What type of paint is already on the walls?

futtyos
No wrong primer

This one

https://www.dulux.ca/ppg/dulux/media...s.pdf?ext=.pdf
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Old 03-23-2017, 11:20 PM   #10
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Krud Kutter is a degreaser. It has a high pH. I suspect there is some residual residue left on the wall that is burning the primer or softening the bond. Did you rinse the KK?

I have just started using KK Recently. I thought it would not have to be rinsed.

Spray on wipe off allow to dry. Which I did.

I suspect you are right, and It left a residue. Also maybe I did not sand thorough enough. Next time I will rinse it for sure.

Thank you for your response
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Old 03-24-2017, 04:56 AM   #11
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Recently I've been using this kk without rinsing. Haven't had a problem yet...
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Old 03-24-2017, 08:20 AM   #12
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Old 03-24-2017, 09:14 AM   #13
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If the Alkyd formulated primer performs like Advance, it will take awhile to cure before it doesn't scratch so easily. I would also imagine that a bathroom painted with an alkyd formulated primer, or finish, would need good ventilation, and proper temps to help evaporate the solvents. It's definitely not one of those coatings where you paint it on thick then shut the doors and let it quietly cure. The environment for those coatings need to be bolstered with air flow.
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Old 03-24-2017, 12:51 PM   #14
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Quote:
Originally Posted by Painter-Aaron View Post
Is this the primer you used?

https://www.dulux.ca/ppg/dulux/media...n.pdf?ext=.pdf

At any rate, it seems as if you did everything correctly except rinsing the Krud Kutter off. There also could have been an invisible residue from some previous cleaner that you are not aware of like TSP or Fantastik. You would not be the first painter that this has happened to, unfortunately. I remember a post here at PT not too long ago about someone painting lots of trim that ended up peeling. He inquired and found that the homeowner had washed it with some new-paint-unfriendly cleaner before he got to the job and did not tell him. I would actually hope that this is your problem, because you seemed to do everything else right. Either that or the primer is not working as expected for some reason.

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