Spray Foam Insulation in Raleigh, NC

Spray Foam Insulation in Raleigh deals with the same Piedmont summer we see in Durham, since both cities share the Raleigh-Durham airport weather station. Wikipedia's Raleigh page counts about 48 days a year at or above 90F. The city sits on the fall line, where the Piedmont meets the Atlantic Coastal Plain, with rolling hills sloping east, and its neighborhoods run from early 20th century houses near downtown to newer homes outside the I-540 loop.

Older neighborhoods

Houses inside the Beltline often have plaster walls, small attics with old insulation, and crawl spaces on brick foundations. We start under the floor and overhead, sealing and insulating where the payoff is largest, and handle walls during renovations or with dense-pack where wiring allows.

North Raleigh and outer neighborhoods

North Raleigh has been one of the fastest-growing parts of the city. The two-story homes there often have bonus rooms, attic air handlers and vented crawl spaces. Hot upstairs rooms and musty crawl spaces are the common complaints, and both are fixable with sealing and the right insulation.

Wet years

September 1999 brought more than 21 inches of rain to Raleigh with Hurricanes Dennis and Floyd, the wettest month on record there. Tropical systems are most likely from late summer into early October. Crawl spaces that flood even occasionally need drainage fixes before encapsulation or new insulation, and we check for water marks and wet wood before quoting.

Ducts in the attic

Many Raleigh houses built from the 1970s on have the air handler and ducts in the attic, where summer temperatures run far above the outdoor air. Sealing duct joints and either burying ducts in deep loose fill or spraying the roof deck are both options. Foam on the roof deck costs more, $1,500 to $9,000 in HomeGuide's national range, but keeps the whole duct system inside the insulated space. We price both when both would work.

Older plaster homes

In older Raleigh neighborhoods, dense-pack cellulose can fill closed plaster walls through small holes. We check for knob-and-tube wiring first and leave live wiring to an electrician.

Code and targets

Wake County is in IECC Climate Zone 4A. North Carolina's 2018 energy code lists R-38 for ceilings, and ENERGY STAR suggests R-60 for an attic with nothing in it. Raleigh is at the east end of our area; call to confirm scheduling for your address. Get a free estimate