MANSARD ROOF DETAILS (Cont'd)

The low downward slope of the mansard roof line acts visually to reduce the scale of a buliding and helps to eliminate a boxy appearance. This technique is used frequently on large commercial projects, particularly those near residential neighborhoods. It is also a common solution to the problem of avoiding a monotonous appearance on flat roofed frame apartment buildings.

Properly used, a mansard roof can strengthen the design without substantially increasing construction costs. If raised up above the level of a built-up roof the mansard can screen out roof penetrations or mechanical equipment.

The variety of mansard roofs is practically infinite. One of the most widely used (and misused) roof designs, its proportions and scale are very important and care should be taken to avoid a mansard roof line that is either too skimpy or too generous.

Two of the most widely used roofing materials on the mansard roof are Western Red Cedar shingles and shakes. Cedar shakes, with thier heavier texture and solid appearance, are perhaps more frequently specified for mansards although shingles are also used, particularly when a lighter scale is desired.

The light weight and ease of application of shingles and shakes contribute substantially to economical construction. They can be installed over light framing-usually spaced battens-thus affording a considerable saving in both materials and labor as opposed to cladding that requires a solid base.

This cost saving factor, combined with their excellent insulating qualities and attractive appearance, contributes to the increasing popularity of shingle and shake mansard roofs.

Construction details for typical mansard roofs are shown in Figure 7, page 9.