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So my girlfriend and I have been working on a wallpaper removal and painting project the last month and we're almost done except for one corner inside the room. This corner is one that joins a wall that is an outside wall with one that is a shared wall with the neighboring townhouse.
In this corner, the primer we're using (Zinsler) develops some cracks in it as it dries. We had to apply spackle in the corner due to some cracks we found, but gave that plenty of time to dry before we sanded it down.
Most of my searches only turn up paint cracking due to not using primer properly, nothing like this. So we're wondering if anyone has any insight into why this is happening and how to fix it so we can finish painting. Kind of would like to be able to use my bedroom again after all.
How's the humidity in the house? Very low? I'm assuming you're in pretty cold weather in Maryland, low humidity can cause primer to crack like that. Or high heat, is there a vent/heater nearby?
Other than that, make sure you've taken off all the previous paint/wallpaper, and the wall is in a good state.
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ceresWhen the last moon is cast over the last star of morningAnd the future has past without even a last desperate warningRegistered User, ModeratorMod Emeritus
edited January 2011
My first thought was honestly that you applied it too thickly to that area and then low humidity took it from there, but that probably falls under 'not using primer properly'.
ceres on
And it seems like all is dying, and would leave the world to mourn
There could be oil or dirt stuck in the material youre priming over. Oil or contamination under the surface will cause the paint/primer to crack as it dries.
How's the humidity in the house? Very low? I'm assuming you're in pretty cold weather in Maryland, low humidity can cause primer to crack like that. Or high heat, is there a vent/heater nearby?
Other than that, make sure you've taken off all the previous paint/wallpaper, and the wall is in a good state.
There's a vent nearby, but it's definitely not the heat. The parts of the wall closer to the vent have had no issues. Neither has the rest of the room so I'm not 100% sure if it's the humidity.
I did notice that the wall adjoining the corner that borders the outside was colder than the other walls so I'm wondering if having to go over a colder surface could lead to problems like this.
Alright. So what would be a good way to deal with the current wall and primer cracks to allow for a smooth coat of paint later? I do have a portable heater I can use to hopefully bring the corner up to a more normal temperature.
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Other than that, make sure you've taken off all the previous paint/wallpaper, and the wall is in a good state.
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There's a vent nearby, but it's definitely not the heat. The parts of the wall closer to the vent have had no issues. Neither has the rest of the room so I'm not 100% sure if it's the humidity.
I did notice that the wall adjoining the corner that borders the outside was colder than the other walls so I'm wondering if having to go over a colder surface could lead to problems like this.
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