If the gap is on the inside of the window anything up to about 10 mm can be filled will decorators caulk decorators caulk is fast drying and slightly flexible making it perfect for filling smaller gaps around windows frames where seasonal expansion is possible.
Best way to fill gaps in door frames.
Water leaking around the door or water leaking under the door or door bottom.
As long as the gap is even on an interior door it shouldn t be why a door isn t closing properly.
A visible door gap between the door and door frame.
Best for use with drywall wood and masonry.
Water leaking from the top of the door frame.
Seal a door frame in place and seal the subfloor at the bottom of a door frame.
Polyfiller is used for repairing small cracks in plaster work.
Instead there s usually a small gap.
If by this you mean where the door frame meets the wall then if it was a small crack i would recomend using decoraters cork to fill it.
How to fill gaps around a door frame.
The door frame which builders call the jamb shouldn t fit tightly to the studs and header that form the door opening.
Use latex painter s caulk inside of doors and windows or to quickly fill cracks and holes in drywall.
A door gap resulting in light under the door or peeking around the edges of the door.
There are many places where you may need to fill gaps before you paint.
On door window frames and baseboards etc.
In your question you mention down the side of a door.
If you have gaps wider than 1 4 the best practice is to fill them first with a foam backer rod such as this c r.
Be careful not to overdo it and seal the door so that it can t settle with the rest of the house.
Filling gaps with decorators caulk.
On an interior paint job you could find them where walls meet ceilings on inside corners of walls where wood trim meets walls on inside corners where wood trim meets other wood trim i e.
Woodfiller is used for repairing and filling holes in wood.
If you have a large gap at the bottom of your door that may be helping the door to stay plumb.
How to fix a gap in an outside door.
If you have gaps around an outside door you could be losing up to 15 percent of the money you spend heating your home by allowing heated air to blow outside.
A drafty door with chilly drafts air blowing through your entryway.
Use to install wood paneling without nails.
Https amzn to 2qzgks0 quick tip for closing a gap in a door frame after install this door in this older building.