Spray Foam for Alexandria, VA

Alexandria’s housing—from 19th-century brick rowhouses in Old Town to duplexes in Del Ray and newer builds near Eisenhower Avenue—loses comfort through thin roof decks, leaky party walls, and rooms over garages. We install spray foam that expands in place, closing the fine pathways around framing, ducts, and penetrations so conditioned air stays inside. With the shell tightened, upstairs rooms hold steady temperatures during muggy Potomac summers and chilly nor’easters, and daily life sounds calmer even under the Reagan National flight path or along Duke Street and I-395.

Two Foam Chemistries, One Tight Envelope

Open-cell foam excels at deep air sealing and sound softening, which makes it a strong choice at the roofline and in living areas where aircraft and street noise are part of the backdrop. Closed-cell foam packs more R-value per inch and resists moisture, ideal for masonry basements, rim joists at the perimeter, crawl spaces that run damp near Accotink and Holmes Run, and garage lids beneath bedrooms. On flat or low-slope roofs common to rowhouses, we design unvented assemblies that meet code and tame the temperature swings that make top floors hard to live in. Each area gets the chemistry and thickness it needs—not a one-size-fits-all blanket.

Historic-District Friendly, Code-Aware Execution

In Alexandria’s historic core, we work from the interior to preserve exterior fabric, coordinate ventilation so moisture has a controlled path out, and document assemblies to align with local permitting and IECC requirements. During application we protect finishes, ventilate the workspace, verify thickness, and add ignition or thermal barriers where the code demands (attics, crawl spaces, and utility areas). Bath fans, recessed lights, and attic hatches are detailed so the new performance is not defeated at common weak points, and clearances to flues or chimneys are respected for safety.