Plaster may be a durable material, but over time it tends to develop stress cracks. To repair cracks in plaster walls, simply apply self-adhesive fiberglass mesh drywall tape over the crack, then cover the tape with a few coats of joint compound to seal the crack for good.
Gianfranco came to the appointment as promised and fixed our front door. He clearly explained what was wrong and what was needed to fix the problem. Thank you