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I also am also confused by the mention of the
addition, but will assume the living roof is going on the flat
roof.
above the insulation, whether it be in the
joist or above ( i would suggest both as heat loss on a roof like this is extra
damaging) and above a membrane roof, I would put an engineered fabric that is
designed for that situation. It is a fabric that has a facing
to keep dirt out but allows water and air flow underneath. The company I use, I
forgot the name, has a product called PLAZAMATE and is made for earth roofs
or earth on top of plazas, tunnels ect. One other fabric is called ENKA
matt .......... This is a very tricky detail especially where the roof
meets the wall. You will need excellant, preverably soldered flashing, and
a membrane roof.....ect.....sounds like fun good luck
Tim McCarthy, Architect
----- Original Message -----
Sent: Saturday, August 24, 2002 10:46 AM
Subject: Re: [GBlist] Ventilating a Shed Roof
In a message dated 8/24/2002 8:14:28 AM Eastern Standard
Time, snizort@netzero.net
writes:
The rafters are basically flat (1/8"
per foot), sloping up to
connect to the existing 2-story house. The new
1-story space is
finished and conditioned, and there will be a living roof
on the
addition. The goal is to vent the new roof where it attaches to
the
existing house so there is continuous airflow above the
insulation.
if you are going to put a living roof, why
don't you insulate above the roof and under the earth, then you can have a
wonderful exposed roof structure below Linda Lloyd
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