Gaps between door casing and laminate flooring are common and manufacturers have designed a wide variety of special pieces for this purpose.
New flooring door jamb and trim too short.
Prior the carpet was plusher and made the gap in this one door jamb less obvious.
I ve recently replaced carpet with hardwood floor.
Pull the casing and plinths both sides.
You simply describe the gap take a picture of it or.
If the painter can t then pehaps making them hire a good trim carpenter to replace your moulding and then a good painter to paint it.
This helps keep the cut at the perfect height.
First of all the installation video for the laminate said to allow 1 4 for the laminate to breathe but the surprising part to me was that it said to allow 1 4 of gap in height between the laminate and the bottom of the door jamb trim.
The door jamb and molding are now too short.
Door jamb molding i m pretty sure i am going to replace the molding anyways to a more modern style.
Works great with a tool like you used a handsaw and even a door casing flush cut saw.
Either way i think if your floor contractor did not take care to make clean flush jamb cuts then the expense of fixing it will keep it from happenig to the next guy and will train another floor contractor to not.
When cutting the door trim you can take a piece of scrap flooring hold it in from of the trim and let the saw blade sit on top of it while you cut.
While in the process of installing laminate flooring i undercut one of the door frames too high.
Repair anything that s revealed at the top from lowering the head casing.