Your Home's Best Defense Against Moisture, Pests & Weather
100% Guaranteed Services
If pests reappear, we’ll re-treat at no additional cost or provide our money-back guarantee.
Flexible Scheduling
Pests don’t keep business hours — we offer same-day service and Saturday appointments.
Waterproofing and Insulation in the DC Metro Area
The health and efficiency of your home often depend on its hidden spaces. In the attic and crawl space, issues such as moisture, outdated insulation, and even wildlife can lead to a range of problems, including high energy bills and poor air quality.
At Century, we offer comprehensive services to protect your home as a complete system. From crawl space encapsulation and foundation crack repair to removing old material and installing new, high-efficiency blown-in or spray foam insulation, we have the solution to create a cleaner, safer, and more energy-efficient environment for your family.
Waterproofing Solutions:
- ✓Basement & Foundation Sealing
- ✓Crawl Space Encapsulation
- ✓Vapor Barrier Installation
- ✓Drainage Systems
- ✓French Drainage System
- ✓Foundation Crack Repair
Insulation Solutions:
- ✓Old Insulation Removal
- ✓Blown-In & Cellulose
- ✓Spray Foam Sealing
- ✓Batt & Fiberglass
- ✓Performance Upgrades
Get a Free Inspection
Same-day & Saturday appointments available
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Expert Insulation Services in the DC Metro Area
Control your home's comfort and lower your energy bills with our professional insulation services. We upgrade attics and crawl spaces with the right materials to protect your home from the DC area's hot summers and cold winters, ensuring year-round efficiency.
Our Insulation Services include:
- ✓Blown-In & Cellulose Insulation: Ideal for attics, blown-in cellulose insulation fills every gap to create a seamless thermal blanket, improving your home's efficiency and reducing outside noise.
- ✓Spray Foam Insulation: For maximum performance, spray foam creates an airtight, waterproof seal. It's perfect for crawl spaces, stopping drafts and preventing moisture problems at the source.
- ✓Batt & Foam Board Insulation: A trusted and cost-effective solution, batt and rigid foam board insulation are excellent for protecting your home's floors and crawl spaces from ground temperatures.
- ✓Insulation Removal & Upgrades: We safely remove old, contaminated, or ineffective insulation, giving your home a fresh start. An upgrade is crucial to enhancing your home's health, safety, and energy efficiency.
Our Waterproofing Services
A damp basement or a musty crawl space is more than just a nuisance; it's a threat to your home's structural integrity and your family's health. We offer a comprehensive range of waterproofing services designed to prevent moisture problems at their source, protecting your home from the humid summers and wet winters of the DC metro area.
Our Waterproofing Solutions Include:
- ✓Basement Sealing & Foundation Crack Repair: We find and professionally seal cracks in your foundation walls, stopping water intrusion before it can cause serious damage.
- ✓Crawl Space Encapsulation: We transform your damp, dirty crawl space by lining it with a heavy-duty vapor barrier. This creates a clean, dry area that improves your home's air quality and prevents wood rot.
- ✓Vapor Barriers: A crucial defense against ground moisture, our professionally installed vapor barriers stop water vapor from seeping into your crawl space or basement.
- ✓Drainage Systems: For homes with significant water issues, we design and install custom solutions, such as French drains and drain fields, to actively channel water away from your foundation.
Our Detailed Inspection Process
We don't just treat symptoms; we identify the root cause of the problem. Our comprehensive inspection process ensures we get a complete picture of your home's health.
- ✓Exterior Evaluation: We start outside, meticulously checking your foundation for cracks, signs of standing water, and any holes or decay that could allow water or pests to enter.
- ✓Interior Moisture Assessment: Inside, we look for the tell-tale signs of water intrusion, including moisture damage, staining, and mold or mildew growth in your basement or crawl space.
- ✓Attic & Pest Inspection: Since water and pest problems are often linked, we also inspect your attic for signs of wildlife intrusion (like raccoons or squirrels) and any related damage to wiring or structures.
Benefits of a Dry, Secure Home
Investing in professional waterproofing and insulation is an investment in your family's health and your home's value.
Key benefits include:
- ✓Lower Energy Bills: A dry, well-sealed home is more efficient to heat and cool, resulting in lower monthly energy costs.
- ✓Improved Air Quality: By eliminating dampness, we prevent mold and mildew from growing, resulting in a healthier living environment.
- ✓Increased Cleanliness & Safety: Our services remove unsanitary conditions left by wildlife and prevent future damage from pests, such as chewed wiring.
- ✓Peace of Mind: Knowing your home's foundation is secure and your family is protected from moisture-related issues provides invaluable peace of mind.
Serving the Entire DC Metro Area
Our expert waterproofing and insulation services are available to homeowners throughout the entire DC Metro Area, including communities in Washington D.C., Maryland, and Northern Virginia.
Get Started Today! Call us at 703-904-1813
Get a Free EstimateAreas We Service in the DC Metro Area
As a locally owned pest control company in the DC metro area, we’ve proudly treated 60,000+ homes since 1993. When you partner with us, you’re guaranteed a pest-free home in no time. To see if we service your specific city, check out our local Virginia and Maryland service area pages:
*Note that we do not service DC Proper.
Maryland
All Maryland areas →- Adelphi
- Aston
- Beltsville
- Bowie
- Capitol Heights
- Chevy Chase
- Clarksburg
- Clinton
- College Park
- Damascus
- Derwood
- District Heights
- Fort Washington
- Germantown
- Hyattsville
- Kensington
- Lanham
- Laurel
- Montgomery Village
- North Potomac
- Olney
- Oxon Hill
- Rockville
- Springdale
- Temple Hills
- Upper Marlboro
Virginia Office
All Virginia areas →- Alexandria
- Annandale
- Arlington
- Ashburn
- Berryville
- Bethesda
- Burke
- Centreville
- Chantilly
- Clifton
- Dale City
- Fairfax
- Fairfax Station
- Falls Church
- Front Royal
- Gaithersburg
- Great Falls
- Hamilton
- Haymarket
- Herndon
- Hillsboro
- Leesburg
- Lorton
- Manassas
- Manassas Park
- McLean
- Middleburg
- Middletown
- Oakton
- Occoquan
- Potomac
- Purcellville
- Reston
- Round Hill
- Silver Spring
- Springfield
- Stephens City
- Sterling
- Triangle
- Vienna
- Winchester
- Woodbridge
$50 Off
Initial Service
New customers only. Must mention when scheduling.
Expires: 09/30/2026
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$100 Off
Termite Service
New customers only. Must mention when scheduling.
Expires: 09/30/2026
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What Our Customers Say
4.6 Star Rating432 Reviews on Google
Showing 5-star reviews from Google
“Raymond was polite. He thoroughly explained the treatment process and gave clear instructions on how to care for the area afterward. He advised not to seal the hole the bees were using until the treatment had fully taken effect, which was very helpful. I appreciated the time he took to answer my questions and ensure I understood the next steps. I would definitely recommend his services.”
“Jeron, with Century Termite and Pest was very knowledgeable about where the mice were getting in. He went to check all areas that I had concerns and showed me areas I didn’t consider. He patiently explained what he was doing and took him time. It did not feel like a rushed job.”
“I’m very satisfied with the service. The technician did a great job removing two wasp nests from my car quickly and professionally. My car had been parked unused for several months and the nests hid in difficult to reach places in it, and the technician came in time, very friendly, and did an excellent job. The scheduling process was smooth and efficient, and the price was very reasonable. I highly recommend the service of the company.”
“We recently had Century Termite inspect for termites and install termite bait/monitoring stations as well as removing and installing new insulation in our attic. Gerald, Ronald and team did an excellent job on the work, they were polite and thorough with good communication and provided all around great service. After this experience we plan to continue going to Century Termite for any related services that we need in the future.”
Get a Free Inspection
Same-day & Saturday appointments available