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Find Attic insulation installers in Washington DC

Long Fence
3.88(
226
)

In business since 1945

Free estimates

Emergency services offered

"Initial rep was great and informative. Felt comfortable with initial sale. Hardly had any contact from customer service except for the payments. There were several delays that we were not informed about unless we called to ask. Took 7 months before they showed up to begin project. Only 1 person was sent to build steps. Took a week. Hard worked, hardly took a break. Had to call again to see when they would come to pour patio. Never knew when they were coming, they just showed up. Hardly spoke with the homeowners. Inspection paperwork was just left on porch. Additional paperwork that is "required by the County" had to be completed by homeowner and taken to Court house to be notarized and filed and also provide a copy back to Long Fence. Time sensitive materials which added to homeowners to-do list. Gave this contract to LF on the surface of their history and appearance of a 'good local company' but should have stayed with original contactors in VA. Puddle of water forms when it rains"
Recommended by70%of homeowners
ROSE RESTORATION
4.92(
73
)

In business since 1979

Free estimates

Warranties offered

"After 5 years of self cleaning my stone kitchen floor and not being able to remove all of the dirt and grime buildup, I finally hired Rose Restoration to professional clean my floor. They did an outstanding job. The floor looks new again! The service technician was punctual and worked extremely hard for 6 hours. It was well worth the price and I will have them back in a few years for another spruce up."
Recommended by98%of homeowners
MLB Home Improvements
New to Angi

In business since 1995

Free estimates

Emergency services offered

Free estimates

Avatar for Renovations By Ed
Renovations By Ed
4.76(
17
)

In business since 2007

Free estimates

Emergency services offered

"First experience with Renovations by Ed; a fantastic first experience. Professional, wonderful craftsmanship. He and his contractors hav given me a great sense of trust for future work."
Recommended by94%of homeowners
P. L. Johnson Construction, Inc.
New to Angi

In business since 1997

Free estimates

Emergency services offered

We're a small company of 5 employees, by contracting us I always assure my customers that they would see me (Phillip L. Johnson-President)or a direct employee, day in and day out, doing your work, not a parade of subcontractors you didn't know. My company, as a small, tightly run organization, will avoid these typical contractor problems and give you a peace of mind.

GREEN HOUSE FLOORS
New to Angi

In business since 2008

Free estimates

Warranties offered

Avatar for American Custom Contractors Inc
American Custom Contractors Inc
4.85(
89
)

In business since 1972

Free estimates

"We had a wonderful experience working with Fon Nanudon at American Custom Contractors in Rockville, MD. Fon is friendly, knowledgeable, responsive, and professional. His follow-up and follow-through are outstanding — he truly goes above and beyond to take care of his customers. If you have roofing, windows, gutter, or siding needs, I highly recommend reaching out to American Custom Contractors. You’ll be in great hands!"
Recommended by94%of homeowners
Avatar for Cupboards Kitchen and Bath Discounter
Cupboards Kitchen and Bath Discounter
4.93(
15
)

In business since 1984

Free estimates

Emergency services offered

We have the expertise and experience necessary to undertake all kinds of remodeling projects - from residential additions and decks to kitchen, living room, and bedroom remodeling projects! But we particularly thrive on kitchen remodeling, bathroom renovations, and Hardwood Floor Refinishing Services, we have accumulated substantial experience and skill in remodeling kitchen, and bathrooms of various types, sizes, and complexities. Has your kitchen, bathroom or hardwood flooring acquired annoying characteristics - leaky taps, flaking paint, and yellowing tile, out dated kitchen cabinets with discolored cabinet doors and drawer front worn out hardwood boards finish? Are you tired of the old and decrepitating look? Do you dream of a fabulous hand crafted kitchen or bathroom makeover on the level of something you've seen in a high-end architectural or interior design magazine or TV commercials? Our job is to make that very dream come true! With numerous awards and immensely satisfied clients standing behind us, we will do everything possible to make your kitchen and bathroom remodeling or expansion project a smashing slick marvelous and affordable, success! Some of the kitchen and bathroom remodeling services we offer include, but are not limited to

Recommended by93%of homeowners
Cipriano Remodeling LLC
3.33(
3
)

In business since 1988

Free estimates

"DO NOT give this person any money. Look around other cites for reviews on him, total thief. Takes your money, asks for more, doesn’t do any work, leaves, files for bankruptcy, repeat. Should be in jail."
Recommended by66%of homeowners
Avatar for Start 2 Finish
Start 2 Finish
New to Angi

In business since 2016

Free estimates

Warranties offered

Home Improvement Company servicing the DMV (Washington DC, Maryland, Virginia.)\nWe specialize in interior/exterior home painting, drywall repairs, hanging, and finishes. Lead Renovator Certified. OSHA 30 CERTIFIED. Guaranteed home safety precautions involving lead, asbestos, Covid-19 etc.

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FAQs for attic insulation installation projects in Washington DC, DC

The best attic insulation depends on where you live, the project stage, and your budget. New builds often benefit from structural insulated panels for top-tier efficiency, while homes in very warm regions can see big cooling savings with reflective insulation. Blown-in, loose-fill, and spray foam all excel at filling odd spaces in finished attics. Talk with a certified local pro to match the material to your climate, space, and wallet.

You’ll only need a licensed electrician if the project calls for moving existing wiring or adding new fixtures. For straightforward insulation jobs, your insulation installer can work around current cables. That said, never start insulating until a pro has checked any questionable wiring. If you suspect damaged or outdated circuits, book an electrician first to keep the project—and your home—safe and code-compliant.

Without air sealing, even the best insulation can underperform. Gaps let heated or cooled air leak out, forcing your HVAC system to work harder and driving up energy bills. Sealing those cracks before adding insulation locks in conditioned air, keeps moisture at bay, and helps the new material hit its full R-value. Ask your insulation pro to tackle sealing first so you enjoy consistent comfort and lower monthly costs.

Among readily available options, structural insulated panels and rigid foam boards top the charts with R-values that can reach 8.0. They’re ideal for new construction or very cold climates where maximum thermal resistance matters most. If you live in a milder zone, blown-in or loose-fill insulation may deliver plenty of performance at a lower price. Weigh the upfront cost against energy savings—and lean on a local pro’s guidance—to pick the smartest fit.

The Washington DC, DC homeowners’ guide to attic insulation installations

From average costs to expert advice, get all the answers you need to get your job done.