A presentment of the merits of metal shingles and metal tile for the roof ... (1921)
National Sheet Metal Roofing Company · National Sheet Metal Roofing Company · leaf 56
The high point ofthis lock extends much higherthan the lock used on any othermake of Metal Spanish tile. Incomparison with ether locks, ourlock stands above the top side ofthe tile, while on all other makes,the lock is on the under side. Thispermits moisture to enter the lock. No water can possibly…
Roofing · Metal roof tile
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