Boris, there are two schools of thought on this.

Gap between window and trim. They look nice, it really improves the look of my home. Take a can of expanding foam and use it to fill the gaps around the window frame. This type of gap does not occur without one of those.

They have a nail flange which prevents water from entering the. Remove the trim carefully, check the framing areas behind for potential moisture and air penetration. It’s kind of hard to see in picture.

Now remove this adhesive cover part from the seal strip and enter it into the joint. Here are few simple steps that should be followed when fixing this issue. Hello, with a flanged window, what size gap should i leave between the trim and the window frame?

Apply a generous amount of caulk to the sealant gun. Cut the tip off the sealant cartridge above the screw thread. I see… hello, with a flanged window,.

But there should not be a gap between the bottom of the sill and the. And that may have extended to the edge. On most of the windows (including the new construction) there is a gap, from about 1/16th to over 1/8th of an inch between the window frame and the trim boards all the way around the window.

My hypotetical question is for exterior. Reveals are nearly essential unless you are perfect and or have a boat lot of time to get everything just right. If there is a gap, won’t the flashing tape show?