Method of restoring standing seam and like lapped metal roofs consisting of side-by-side panels having side edges which overlap

A method of restoring degenerated, no longer weather-tight or moisture-proof, standing seam and like lapped panel metal roofs incorporating adjacent panels having edges lying in different planes which overlap to form lapped edge joints wherein the terminal edge of one sheet is an exposed edge which extends over and overlies the edge of an adjacent panel to form a joint and wherein fasteners extend through said panels into a roof support structure, and fasteners extend through the lapped edges of said panels to secure them together, comprising the steps of:

• (a) replacing any defective fasteners;
• (b) applying flexible elongate elastic strips to span and overcover said exposed, lapping edges of the panels along their lengths, and adhering them to said panels forming the joint, the strips being stretchable at least 100% with temperature-induced movement of the panels;
• (c) applying covering sealants over certain of said fasteners;
• and
• (d) applying a substantially non-elastic asphaltic coating over said sealants and roof panels which bonds to both said sealants and said roof panels and forms an overall outer cover for said roof, thereby permitting said coating to crack and with stretching of said strips at said joints to produce separated edges in said coating due to temperature induced panel edge movement, and the cracked and separated edges to return with said sealants to abutting or near abutting relation with temperature-induced reverse movement of said edges of the panels.