HVAC ducts are placed
in the stick-built parts of the PorterSIPs home
HVAC Notes
In the event plumbing or HVAC ductwork is to be
run along a SIP wall, a chase can be built that will both conceal and
protect the run. See drawing 38-701. Wherever possible, ductwork can be routed through the
stick-built (interior) sections of the home.
To help prevent, and to reduce the rate of
spread of, fire, the inside surface of SIP panels, which face living areas,
must have ½" or thicker gypsum board OR equivalent installed. Code requires
a 15 minute thermal barrier on the inside surface of panels in residential
structures. Local code requirements vary and may require additional fire
prevention measures.
W.H. Porter, Inc. also manufactures a one-hour
rated panel which carries the UL Classification Mark and is listed as Design
Co. U532. This panel is a 6 1/2" (5 7/16" EPS core), Type A ( 7/16" OSB face
both sides).
