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.

Cut A.

Shows commencement of first two courses.

If your roof has a pitch of six inches to the foot, or steeper, let the bottom edge of the shingle rest just above the lower gauge line on the top of the underlying shingle, as shown in Cut A. But if the pitch of the roof is less than six inches to the foot, let the shingle entirely cover the lower gauge line, as shown in Cut B.

Cut B.

We advise against the use of our shingles on roofs of less pitch than five inches to the foot, unless the lap is increased. As a rule, we think any roof that can be walked over with safety is too flat for shingles of either wood or metal.

Cut F.