Fiberglass Insulation in Tysons Corner, VA

Fiberglass remains the most cost-effective insulation system for many Tysons Corner projects, and we install it in three forms: cut-to-fit batts for tenant fit-outs and new construction, blown-in loose-fill for residential attics in Pimmit Hills and Idylwood, and BIBS netted dense-fill for hard-to-reach walls in older single-family homes. The choice depends on the assembly. For a Class A office build-out along Westpark Drive where speed and code R-value are the priority, batts beat any other system. For a 1960s split-level near Westwood Village with closed walls full of wires and pipes, BIBS reaches every corner without lifting drywall.

BIBS for Closed Walls, Loose-Fill for Attics

The Blown-In Blanket System (BIBS) is the right answer for Tysons-area homes built between 1955 and 1985, where original wall insulation was either skipped or installed poorly. Our crews staple netting to the cavity face, then blow fiberglass to a verified density of 1.8 to 2.0 pcf. The result is a custom layer that touches every surface, surrounds wires and outlets, and delivers the rated R-value across the entire wall — not just where someone remembered to fit a batt. In attics, blown loose-fill at 14 to 16 inches reaches R-49 evenly across joists, eliminating the cold spots that come from compressed batts at the eaves.

Code R-Values, Ventilation, and Tysons Documentation

Fairfax County aligns with Climate Zone 4A under the IECC, which sets minimums of R-49 in attics, R-13 to R-15 for 2x4 walls, and R-21 to R-23 for 2x6 walls. We meet or exceed those targets, with documentation submitted for the IECC inspection. Bath fans are confirmed to vent outdoors, recessed lights receive rated covers or safe clearances, and soffit baffles maintain attic ventilation channels so assemblies dry as designed. For commercial fit-outs, we provide IECC compliance forms and Virginia VEES energy reports. Low-VOC and formaldehyde-free fiberglass is available on request for indoor air quality sensitive projects.