Rounded Rectangle: DEMAND SPRAY FOAM INSULATION

C N R  INSULATION, LLC

SERVING THE MID-ALTANTIC

To contact us:

 

1290 Bay Dale Drive Suite 294

Arnold, MD 21012

 

443-219-FOAM (3626)

 

E-mail:

info@sprayed-in.com
ENERGY STAR RATEDText Box: NEW HOME CONSTRUCTION New home construction. This is the easiest case: the entire building envelope should be sprayed with spray insulation foam. This includes raised foundations, all outside walls, and the roof assembly. Typically, there are R-value requirements which determine how thick the foam needs to be applied. These R-values are typically determined by the architect. If it is early enough in the design phase, the architect may decide to lower the R-value requirements since the very low ACH of foam insulation will provide the desired efficiency. Typically, foams reach a point of diminishing returns past R-20. The correct ACH value also needs to be passed on to the HVAC contractor, who will consider this value when sizing the HVAC equipment. Typically, the installed HVAC is reduced in size and capacity by about 50%. This saves construction costs up front as well as operating costs once in service. ADDITIONS AND REMODELS Many older homes have no insulation, or old insulation which is failing. Most often, the attic is the easiest area of the house for a retrofit spray foam application. Attic insulation offers the most return on investment, since typical homes lose upwards of 40% of their energy through the roof. In existing homes with vented attics, we recommend removing old insulation such as fiberglass or cellulose from the floor of the attic, and spraying the entire surface area with spray foam insulation. The biggest benefit is the complete elimination of energy-robbing air leaks through the entire roof assembly. In this scenario, no modification of the attic ventilation would be required. We recommend application of approximately 5” (12 cm) of open-cell foam as a very cost- effective solution. This delivers about 20 R-value with a true minimization of ACH, provided there is good access to the entire floor in the attic. The good news: most attic insulations can be done in one day, with minimal disruption of the people living in the house.  This photo shows an attic which was retrofitted from wall to wall for several reasons, the main one being the severe allergic reaction of the family’s children to the previously-installed fiberglass. This family hired an environmentalist to analyze their house for problems leading to the chronic conditions. Among other recommendations, the diagnosis included the removal of all fiberglass insulation from the structure. Another good reason for foam insulation: this attic absorbed a lot of heat, which led to high energy consumption. End result: improved health, smaller energy bills, and a reduced impact on the environment!