The Woodlands, Texas - Spray polyurethane foam (SPF) is being used in a project in Houston which indicates the increasingly wide acceptance of this insulation technology in the US.
Huntsman Corp. and CertainTeed Corp. say that CertaSpray SPFs were selected to insulate one of the first homes in Houston being evaluated for LEED for Homes (LEED-H) Platinum certification.
CertainTeed's CertaSpray open- and closed-cell foam insulation, both featuring Huntsman's technology, were chosen for the insulation of a custom home built by GradCo Structures & Homes llc, designed by Laverne Williams of Environment Associates Architects & Consultants, a pioneer in green building architectural design.
"We strive to implement a sustainable design approach in our construction, and we are proud to have gone above and beyond the LEED-H Platinum requirements," said Sergio Grado, president, GradCo Structures & Homes, LLC. "I consistently utilise building materials and techniques that will conserve energy. The use of CertaSpray SPFs in the GradCo home is a great example of this."
GradCo built the home using insulated concrete forms (ICF) before insulating it with SPF, with open cell SPF used in the attic and rafters to reduce the energy loss due to air infiltration through cracks and crevices, which can significantly lower heating and cooling costs for the homeowner.
A tighter building envelope allows homeowners to reduce the size of heating, ventilation and air conditioning (HVAC) equipment required to maintain comfortable air quality in the home. Typically, a 4000 sq.ft home would require an 8-ton AC unit, but here the homeowner was able to use a 4-ton AC unit.
This is one of the many benefits of SPFs, said Lionel Rossignol, product manager, CertainTeed Insulation, noting that, "It translates into savings in construction costs and ultimately reduced energy costs for the homeowner."
GradCo applied closed cell SPF in the garage apartment attic and on the underside of the roof deck, creating an unvented attic with improved structural integrity.
"We wanted to push the limits and build a nice, tight, sustainable home," said Grado. "Using ICFs along with CertaSpray Open and Closed Cell SPFs was like delivering a one-two punch. It allowed GradCo to build an extremely energy-efficient home, while expanding on the overall structural integrity."
"Based on the energy savings and structural enhancement achieved with SPFs in a building envelope, more and more architects are beginning to specify SPFs as part of their initial green home design plans," said Monica Karamagi, marketing manager, Huntsman Polyurethanes.