ACSI-SIPS,
a superior building material with exceptional strength, joins the
industry
with over 40 years of proven technology, and can be used effectively
and economically with engineered woods, dimensional lumber, or steel
framing for residential, additions, or commercial buildings.
ACSI-SIPS
(SIP is an acronym for Structural Insulated Panel) are made with the
inside and outside walls laminated to a core of structural polystyrene (SPS)
with a special vapor barrier polymer.
ACSI-SIPS recommended themselves perfectly as roofing
systems.

3
days after the addition was built.