About Us

Brief History / Office Personnel Profiles

Roofing Services Co., Inc. was started by Gary Nasalroad in 1985 while attending Oklahoma State University and after serving in the U.S. Army. At that time we did both Residential and Commercial roofing in the Stillwater area only, Stillwater is still our main distribution center, but now we service all of Oklahoma and several neighboring states.

In the early 1990’s we began installing guttering, vinyl siding, replacement windows, and began doing business as Roofing Services Co., Inc. dba RSI  (Roofing, Siding, and Insulated Windows) to better represent our changing company. In 2000, we added metal patio covers, carports, enclosed sun-rooms, screened room enclosures as well as miscellaneous carpentry work.

OLYMPUS DIGITAL CAMERAOn most days our trucks and crews can be seen throughout Oklahoma and the central U.S. doing both residential and commercial projects. We have completed roofing  projects in Washington state, Galveston, TX and as far south as Georgia. Our Commercial division does both new and re-roofing  projects and we specialize in the the installation of EPDM, TPO and PVC membrane systems and are certified by several manufacturers to give labor and material warranties from 15 to 30 years depending on system type.  Send us your blue prints and/or I-Sq project number for a complete take-off and quote.

Our residential crews install all types of asphalt roofing, wood shakes, tile, slate, and metal roofing. The metal roofing crews install R-panels, standing seam, and stone-coated metal shingles.

Call for expert installation of siding, seamless guttering and leaf covers, metal patio covers, carports, overhead canopies, insulated sunrooms, screened rooms, and miscellaneous carpentry work.

RSI has completed projects for Federal, State, and City municipalities. Also commercial builders, residential contractors, and home owners.

RSI is fully insured with Contractors General Liability and Worker’s Comp (See Insurance Certificate Tab on this website). We have bonding capability for most projects.  We are listed on Angie’s List and we  are members of the National Roofing Contractors Association.

We offer free estimates and roof evaluation reports for anyone who has experienced high winds, hail, or has purchased a home and would like an honest roof appraisal.

Call or email RSI today for a free estimate.


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  • President
    Derwin (Gary) Nasalroad – Construction Management
    Oklahoma State University
    Certified with several Mfg. / Oklahoma Roofing License / Kansas Roofing License / Arizona Roofing License
  • Office Manager
    R. Matthew – Business Administration
    Northern Oklahoma College
  • General Superintendent
    Mark Cline – Roofing, Siding, Carpentry / 26 yrs experience OSHA Certified / Certified with several Mfrs.
  • Construction Design / Estimating
    Ben James – Former Architectural Business Owner, 27 yrs experience
  • California Building Code Expertise / Certified with several Mfrs.
    Kansas Roofing License / OSHA Certified
  • Sales / Estimating
    Douglas Lawhead- 30 yrs experience
    OSHA, Mulehide, Versico, Genflex, Firestone Certified

Animated Roof GIF


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Call For Free Estimates

Stillwater: (405) 372-7645 – Toll Free: (800) 475-2612

Our Location

  • 524 S. Hafner
  • Stillwater, OK 74074
  • Local: (405) 372-7645 or call us Toll Free: (800) 475-2612