Shake Application

Shakes, like shingles, are normally applied in straight, single courses. The following application details (Figure 6) must be observed.

1. The starter course may be one or two layers of cedar shingles or shakes overlaid with the desired shake. A 15" (381 mm) shake is made expressly for starter and finish courses.

2. Butts of first course shakes should project 1 1/2" (38.1 mm) beyond the fascia.

3. An 18" (457.2 mm) wide strip of No. 30 roofing felt (or No.15 felt depending upon code requirements) should be laid over the top portion of the shakes and extend on to the sheathing. The bottom edge of the felt should be positioned above the butt of the shake at a distance equal to twice the weather exposure. For example, 24" (609.6 mm) shakes laid with 10" (254 mm) exposure would have felt applied 20" (508 mm) above the butt. Thus the felt will cover the top 4" (101.6 mm) of the shakes and extend up 14"(355.6 mm) onto the sheathing. Note that the top edge of the felt must rest on the spaced sheathing.

4. Spacing between adjacent shakes should be a minimum of 3/8" (9.525 mm) and a maximum of 5/8" (15.875 mm).

5. Joints between shakes should be offset 1 1/2" (38.1 mm) over adjacent courses.

6. Straight-split shakes should be laid with the froe-end (the end from which the shake has been split and which is smoother) towards the ridge.

MANSARD ROOF DETAILS

The mansard is particulary well suited to renovation work on pitched roof houses because the upper story can be enlarged without adding extra height to the structure. The conversion of a pitched roof bungalow to a mansard provides a floor area on the upper floor that can be identical to the main floor area.