A gap between the bottom of the front door and the threshold is easily fixed with a door sweep.
Fix gap on side of door between lock and door.
Place the shims between the hinge leaf and door at the bottom and middle hinges.
Frost king corner guards.
Http bit ly frostkingcornerguards ks door corner seals white.
If that doesn t work shim the hinge side.
Remove the frame screws from the hinge you identified but leave the.
If the screws are loose in the casing replace them with larger ones to create a tighter fit.
This will shift the top half of the door upward.
Door clearance is too tight at the top lock side of the opening.
Open the door and place a support or wooden wedge under the door to relieve tension.
Open the door and place a wooden block or hardback book under the outer corner of the door to hold it in place while you work.
Remove the trim and cut the nails holding the frame to the studs.
Door sweeps reinforce the seal between the bottom of the door and the door jamb meaning you get extra protection from dirt bugs moisture and wind.