How to buy the perfect front door: what to take into account

Insulation of the outer walls leads to the purchase of a new entrance door with good thermal insulation. If you make such a repair and leave the door to the old one, there will be little use. And if the interior doors play only a functional role, the input should have a number of other advantages. First of all, it should be qualitatively collected: without backlash, curvature, cheap fittings, and so on. After all, she is also a protection against crackers.