HomeAdvisor screened and approved seal

HomeAdvisor Screened & Approved

This service professional has passed the HomeAdvisor screening process.

Learn about our screening process
Learn about our screening process

17 Years In Business

Company Details

  • Verified Licenses


8630m Guilford Road
Columbia, MD 21046


  • Mon: Open 24 Hours
  • Tue: Open 24 Hours
  • Wed: Open 24 Hours
  • Thu: Open 24 Hours
  • Fri: Open 24 Hours
  • Sat: Open 24 Hours
  • Sun: Open 24 Hours
View All Details & Credentials


Service Details

  • Residential Work
  • Small Jobs Welcome

Areas of Expertise

  • Roofing
  • Gutters
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered
  • Credit Cards Accepted


41 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 41 results
5.0 Peter W. Rockville, MD

Showed up on time. Explained what is being done. Did not try to sell extra services

5.0 Charles H. Chevy Chase, MD

Moses and his crew of Walter and Cesar were outstanding. Walter and his brother Cesar have deep knowledge about roofs and the flow of water and leaks. They did a great job helping to service our 100 year-old original slate roof quickly, professionally and kindly. I am no contracting them to seal my original steel and lead bay windows. Reasonably priced, very timely and responsive, and high quality work.

5.0 Scott D. Bethesda, MD

Great work, quick service and reasonable price.

5.0 Amanda M. Silver Spring, MD

We were worried about some leaking from our gutters and Moses rearranged the schedules so they could come out the same day.

5.0 Douglas F. Silver Spring, MD

Emergency repair. They came promptly and fixed the problem in one visit. Pleased with the quality of service and the price.

5.0 Alisa T. Bethesda, MD

They cleaned our entire roof and covered gutters. It's a complicated design and job.

5.0 John H. Bethesda, MD

Very professional and knowledgeable

5.0 Caleb P. Silver Spring, MD

Very courteous, helpful and efficient.

5.0 J M. Pittsburgh, PA

I hired Moses Williamson to clear my gutters and downspouts. His crew noticed cement debris laying on the roof. Moses inspected the damage and it turned out I had a damaged chimney crown that required replacement. In addition, the brick chimney needed tuckpointing in several places to refill the mortar joints. His crew replaced the cement crown, tuckpointed the chimney, and applied a clear sealer over the entire surface. Based on Mosesâ recommendation I agreed to have the brick facade spot tuckpointed and sealed. In truth I had previously noticed small spots of missing mortar on the brick front but had simply put off addressing. I found Moses to be knowledgeable, professional and friendly. He showed me photos of the crown damage, and patiently answered my many questions. And yes, the gutters and downspouts were cleared. I highly recommend Moses Williamson for gutter and roofing maintenance and repair services.

5.0 Trish F. Alexandria, VA

Excellent service and crew!!!

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.

To find more licensing information for your state, visit our Licensing Requirements page. Note that some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

**Only for U.S. service professionals

Final Step - Confirm Your Appointment:

Confirm your appointment with on , - Change


By clicking Confirm Appointment, you affirm you have read and agree to the HomeAdvisor Terms & Conditions, and you agree and authorize HomeAdvisor and its affiliates, and their networks of Service Professionals, to deliver marketing calls or texts using automated technology to the number you provided above regarding your project and other home services offers. Consent is not a condition of purchase.