Cortright metal tile shingles
If your antique tin shingles look like this……
|Cortright metal tile shingle with flaking and rust|
Probably your underside of these same shingles, sitting on slats, look like this……
|Underside of same shingles still rust-free and original color|
The old tin shingles were dipped in a finish, thereby covering both sides. On the top side, rain, sunlight, snow and ice wear away the finish. In this instance, a paint without the proper elasticity was used.
The underside, protected from outside influences, still retains it original appearance. These shingles are excellent candidates for preservation with coating applications that approach the life-expectancy of the old lead paints.