Practical hints to builders and those contemplating building / Facts worth considering relating to foundation, cellar, kitchen, chimney, cistern, brick-work, mortar, heating, ventilation, the roof, and many items of interest to builders.

by National Sheet Metal Roofing Co.

ATTENTION, ROOFERS!

Our Broad Rib Roofing and Steel Plate Shingles are not protected with a coat of richer metal like those made of tin or terne plate, and consequently their durability depends upon the paint with which they should be covered.

For this purpose nothing, so far as we know, is equal to a mixture of pure unboiled linseed oil and the oxide of iron. The Shingles should have two coats, one before they are put on, on both sides (this we do), the other immediately after they are laid. This last coat should be repeated every four or five years.

Remember, it is the rust-preventing qualities of linseed oil, combined with the oxide of iron, that makes steel or iron sheets resist the corrosive action of oxygen, which is ever present in the atmosphere. ([See page 101.])