Civil Engineering Reference
In-Depth Information
The advantage of the roof window over the dormer, if additional floor space is not the cri-
terion, is that because the glazed area is angled directly at the sky, significantly more light
is admitted to the room. The manufacturers of the proprietary roof windows also claim up
to 70% saving in cost over a comparable dormer construction.
Additional Design Considerations
New houses constructed under the control of the
National House-building Council
must
further conform to the requirements of the
Registered House-Builder's Handbook
, Volume
