the Lightwell (Shaft)
Construction of the shaft requires some planning, but
basically it is a straight forward job.
The main guildelines are:
- Joists. At the perimeter on the ceiling opening
and those which are cut off have to be braced and
- Rafters. Along the skylight opening and those which
are cut off have to be braced and doubled up properly.
- To allow some light penetration, and eliminate the
box or chimney effect, it is highly recommended that
at least two walls on the shaft be flared.
A typical shaft installation has two vertical walls
and two opposite walls flared. (See illustration)
- All walls are dry-walled, taped and a vapour barrier
installed together with proper insulation to prevent
condensation and heat loss.
- The shaft walls are finished with white paint or
stucco to allow maximum reflection of incoming light.
It's easy to do, you're going to love it.
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