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Overview
of Panels
(Source: NAHB Research
Center)
SIPs are manufactured by
combining structural board (OSB or plywood)
or other facing with foam. In many cases,
the SIPs use a preformed foam core and the
facing is applied with an adhesive. Rigid
foam cores are typically composed of either
expanded polystyrene (EPS), polyurethane, or
polyisocyanurate.
SIPs typically range in
thickness from 4 to 12 inches and can be up
to 24 feet long. Roof spans are typically
between 12 and 14 feet, and floor spans
typically range between 8 and 16 feet.
Panels may be generic without penetrations,
and openings for windows and doors can be
cut on the jobsite. SIPs can also be ordered
as a packaged system that typically arrives
at the site precut with all window and door
openings installed. Electrical chases may be
preformed at the factory or cut in the
field.
Two structural skins give
panels the necessary strength to withstand
axial, bending, and racking and shear loads.
Manufacturers state that SIPs can be
designed to withstand winds in excess of 160
mph and meet seismic Zone 4 requirements.
SIPs have excellent thermal
performance-manufacturers state that buyers
report energy saving in excess of 50
percent.
For more
information on Structural Insulated Panels,
visit the Frequently Asked Questions
Section.
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