Spray Foam Insulation in Rockville, MD

Spray foam insulation in Rockville mostly deals with suburban homes and townhouses. Rockville was incorporated on March 10, 1860, and is the Montgomery County seat. It is now the fourth most populous incorporated city in Maryland, with 67,117 residents in 2020 and 27,953 housing units, 4.8 percent vacant. Housing grew quickly: the city had 25,199 units in 2010.

Postwar and newer houses

Many Rockville houses date from the postwar decades on. Even with insulated walls, they often have thin or uneven attic insulation, unsealed top plates and recessed lights, and rim joists with batts stuffed in rather than sealed.

Townhouses

Townhouses share walls but have their own attics and basements. Air sealing at the attic and foam at the rim are common upgrades.

Bonus rooms

Rooms over garages are frequent complaints. Foam in the garage ceiling and knee walls usually fixes them.

Recessed lights and ceilings

Many Rockville homes built in the 1980s and later have recessed lights in the top-floor ceiling. Older cans that are not airtight leak a lot of attic air. We check whether they are rated for insulation contact and seal or cover them as appropriate before adding insulation.

Scheduling

Attic work in a typical Rockville house is usually a one-day job. Spray foam jobs need the house empty for 24 hours or more while the foam cures, so we plan those around your schedule.

Townhouse attics

Townhouse attics are often small and reached through a hatch in a closet. We protect the closet and the path to it, and we seal and insulate the hatch itself so it is not the weak spot.

Code

Maryland adopted the 2021 IECC in 2023; Montgomery County is in Zone 4A. ENERGY STAR suggests R-60 for an uninsulated Zone 4A attic. Get a free estimate