Paint crack lines appearing on door frames

6 Apr 2021
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United Kingdom
Hi Guys,

Anyone able to help, I'm trying to work out why theses paint cracks have appeared on the door frames.

I've previously sanded the wood back (removing layers of paint) then primed the wood and painted with two coats of Dulux satinwood.

Ive not put the doors back on yet.


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I suspect the cracks were there before, then they got painted over, then natural movement has opened them up again.

Those gaps/cracks should have been filled with decorators caulk before painting.
thanks caulk it is then, Ill give it a light sand, caulk and another coat.
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