Paint crack lines appearing on door frames

icon_boy · 9 Apr 2021

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.

sparkwright · 9 Apr 2021

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.

Chivas69 · 10 Apr 2021

Looks like house movement.

icon_boy · 10 Apr 2021

thanks caulk it is then, Ill give it a light sand, caulk and another coat.

Notch7 · 10 Apr 2021

icon_boy said:
thanks caulk it is then, Ill give it a light sand, caulk and another coat.

ideally you need to widen the cracks a bit with a stanley knife to make them a V, then fill them

icon_boy · 10 Apr 2021

thanks for the tip

Chivas69 · 10 Apr 2021

And remember a lot of caulks can't be sanded. A ready mixed filler on the cracks may be better

sparkwright · 10 Apr 2021

Isn't the caulk more flexible though?

Chivas69 · 10 Apr 2021

sparkwright said:
Isn't the caulk more flexible though?

Caulk all the edges and wood joins but on the main frames slightly dig out the cut and use sandable filler!

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Paint crack lines appearing on door frames

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