Using a framing square measure the depth of your door jamb by sliding the square under the newly cut gap until the tool hits the door frame or stud.
Floating floor door frame.
A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.
If there s a gap under your door casing and also a gap between two rooms under a door where two different installations of laminate flooring join you can install t molding to hide both gaps.
During the flooring installation laying laminate in a doorway perfectly is not so difficult when you start laying the floor boards at the wall that has the door in it.
Some newer homes have manufactured i beam shaped joists.
Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.
Try not to cut higher than the gauge block or a gap will appear between the flooring and the jamb.
I made a quick video on how to undercut door jambs for laminate flooring it is a diy job most people could undertake themselves if the have some basic tools.
If your flooring runs parallel with the door you ll likely have only one piece of laminate to trim.
Cut the door s molding and the jamb behind it while keeping the saw on top of the gauge block.