About Allstate Windows & Siding
The success of this Allstate Windows & Siding, LLC as a company is measured by the lasting relationships with our customers and the quality of our products and services. We take pride in having the majority of our sales come from previous customers and referrals.
Allstate Windows & Siding was founded in Houston, Texas, by James C. LaGrappe, Sr. In the 1970s, Jim began his career selling windows and vinyl siding by walking door to door. Jim’s experience and knowledge were handed down to his son, Jimmy LaGrappe, Jr., and daughter, Mary LaGrappe. Together, the three of them are the driving force behind this family-owned company.