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Recipient of the NT Windows 
2016 Presidential Dealer of the Year Award



The Best in Windows & Siding in Houston

Allstate Siding & Windows Inc., 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 was 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. The success of this company is measured by the lasting relationships with their customers and the quality of their products and services. They take pride in having the majority of their sales come from previous customers and referrals.

James C. LaGrappe, Sr.

Owner Jim Sr. followed the American dream by fighting for our country. He served in the military for 10 years. After serving our country, he returned home and raised a family of seven children. Today, he is still running a successful business at 82 years old. A vision that Jim Sr. had over 40 years ago never dwindled because of hard work, determination, and believing in the American dream. Jim’s other passions in life are spending time with his family and playing golf.
Jimmy LaGrappe, Jr.
Jimmy has lived in the Houston area since he was 5 years old. He has been in the home improvement industry for over 33 years. This has given him in-depth knowledge of all aspects of this industry. One of the most enjoyable aspects of his job is being able to communicate with customers. His honesty, values, and the choices of products make the transition of remodeling your home stress-free. Jimmy has been married for over 30 years and has three children. He enjoys spending time with his family, friends, and his adopted pets.
Mary LaGrappe
Mary has been in the home improvement industry for over 28 years. She specializes in account management and customer service. The knowledge she has gained over the years has made her an asset to this company. She enjoys staying active in health and nutrition, spending time with her family and friends. The love of her life is her dog, Honey, a Lhasa Apso.
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