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HomeAdvisor Screened & Approved

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Learn about our screening process

38 Years In Business

Company Details


  • 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

    Areas of Expertise

    • Roofing Install/Repair
    • Gutter Roofing/Repair
    • Inspection Roofing
    View All Offerings and Cities Served

    Cost Information

    • Free Estimates
    • Warranty Offered


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

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-10 of 40 results
    5.0 E C. South Ozone Park, NY

    JJ was professional and responsible and he explained the process every step of the way. He did a thorough job.

    5.0 Ron H. Little Neck, NY

    John gave me a good price. They did the entire job in 1 day. Neat, clean and professional.

    5.0 Pat M. Maspeth, Ny, NY

    Were on time, cleaned up after the job, brought all the materials. They were very polite!

    5.0 Angela W. Columbia, MD

    John Johnston Contracting is a great company with excellent customer service and a rapid response time. We were always kept up to date on the progress of the gutter cleaning. Everything was fixed by the technician very properly.

    5.0 Karen M. Woodstock, MD

    They repaired the shingle roofing at my place as there was a little leak on the roof. I was pleased with the service I received from John. They were quite professional and did an excellent job.

    5.0 Kylie S. Woodstock, MD

    I called the John Johnston contracting to seal the driveway. They arrived on schedule and gave me a call before they arrived. The work went off without a hitch, and the overall product was good.

    5.0 Faith J. Parkville, MD

    I had used their house roofing and gutter installation services a few times before, and they had always done an excellent job. Also, they are very neat and pleasant to work with.

    5.0 Lily J. Columbia, MD

    The JJs roofing had affordable prices, and making an appointment with them was effortless. I called them for the new seamless gutter job and they did great work.

    5.0 Audrey M. Ellicott City, MD

    On Saturday evening, JJs entire team arrived at my house to repair the shingle roofing, and I am grateful that these roofing professionals were able to fix the problem.

    5.0 Cathy P. Brooklyn, NY

    Provided professional service. Left work area clean. Gutter now working properly.


    JJs Roofing

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    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.

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