How Do You Fix a Sagging Dining Chair Seat?
A sagging dining chair seat comes down to one of three causes: stretched or broken webbing, collapsed foam, or springs whose tying cord has failed. Turning the chair upside down and looking at the underside tells you which one you are dealing with in a matter of seconds. This guide walks through diagnosing the problem, then replacing webbing properly with the correct weave and tension, choosing foam with enough density to survive daily dining use, and knowing when sprung seats are better handed to an upholsterer. It also explains why the popular plywood quick fix creates as many problems as it solves, how to check and reglue a loosening frame while the chair is already upside down, and the habits that cause seats to fail early....