Fiberglass Insulation in Chevy Chase, MD

Fiberglass remains the most cost-effective insulation system for many Chevy Chase projects, particularly rental properties, secondary residences, and the budget-conscious upgrades where homeowners want measurable improvement without premium-tier investment. We install it in three forms: cut-to-fit batts during framing-stage remodels and additions, BIBS netted dense-fill for closed walls in mid-century homes outside the Village historic district, and blown loose-fill for attic top-ups across the full Chevy Chase housing inventory. The choice depends on the assembly. For a basement finish or addition where speed and code R-value matter most, batts are the right answer. For a 1960s ranch with closed walls full of wires, 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 Chevy Chase mid-century homes built between 1950 and 1985, where original wall insulation was either skipped or installed inconsistently. Our crews staple netting to the cavity face, then blow fiberglass to a verified 1.8 to 2.0 pcf density. The result is a custom layer that touches every surface, surrounds wires and outlets, and delivers the full rated R-value across the entire wall. 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.

Maryland Code R-Values and Rebate Documentation

Chevy Chase sits in 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. Maryland code matches these IECC baselines. We meet or exceed all targets, with documentation submitted for the Montgomery County DPS 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. We provide all the documentation needed for Pepco EmPOWER rebates and federal IRS Section 25C tax credits, and low-VOC and formaldehyde-free fiberglass products are available on request.