Allstate is Houston's family-owned windows, siding, and door company. Texas-made, TDI windstorm-rated products, expert installation, and honest pricing — with 12 months no payments, no interest.
From whole-home window replacements to fresh James Hardie siding and new doors, everything is installed by our own experienced crews — not subcontractors.
Energy-efficient vinyl, impact, and Texas-made Vistamark windows that cut your electric bill and stand up to the heat.
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James Hardie fiber cement, LP SmartSide, and Mastic vinyl — durable, low-maintenance siding built for Gulf Coast weather.
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Patio doors, entry doors, and replacement doors that boost curb appeal, security, and efficiency.
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For more than 50 years, the LaGrappe family has installed windows and siding across Greater Houston. When you call, you reach people who actually run the company and stand behind the work.
A few recent Houston-area window and exterior transformations.
Homeowners across Houston, Sugar Land, Katy, and beyond.
“Had Allstate redo the siding on our house and they did a wonderful job. They removed the old vinyl and put up Hardie planking. The guys were very respectful of the property and did a very thorough job.”
“The Allstate crew did a great job with our windows. Their sales guy Patrick helped us pick the right windows — Vistamark, made here in Texas — for our budget, and the price was very fair and thousands below the high-end options.”
“Allstate installed 22 windows in my home. The quality of the entire process was excellent — the owners and installers are professional, on time, and the cleanup was perfect. I noticed a savings on my electric bill right away.”
A new set of windows or fresh siding shouldn't wait. Qualified homeowners can get started now and pay nothing — with no interest — for a full year. We'll walk you through the options during your free estimate.
See Financing Options…and surrounding Gulf Coast communities. Not sure if we cover your area? Just ask.
Allstate Windows & Siding has been improving Houston homes for more than half a century. Founded by James C. LaGrappe Sr. back in the 1970s and still family-owned today, we have spent 50-plus years learning exactly how homes here weather the heat, the humidity, the coastal wind, and the storms that roll in off the Gulf — and how to build them back stronger.
We are a one-stop exterior company. New energy-efficient windows, a full siding replacement, a statement entry door, a wide patio slider — it all comes from the same family company, installed by the same trusted crews, and stands behind the same reputation. That is a rarer thing than it should be, and it means you are not juggling three contractors and three warranties to get the front of your home right.
From our home base we serve homeowners across Houston, Sugar Land, Katy, The Woodlands, Cypress, Pearland, League City, and out to Galveston. Wherever you are in the greater Houston area, the estimate is free, the advice is honest, and the work is handled start to finish by people whose name is on the truck.
Old windows, siding, and doors do not just look tired — they cost you comfort and money every single day. There is a real payoff to getting them handled, and Houston's climate makes that payoff bigger than in most places.
Low-E, double-pane glass and insulated frames and siding stop the relentless summer heat from pouring into your home. When the AC is not fighting a losing battle every afternoon, the bill goes down — often noticeably, and every month for years.
Living on the Gulf Coast means planning for wind and windborne debris. TDI windstorm-rated impact windows and durable, moisture-resistant siding harden the home against exactly what our storm season throws at it — protection that is in place before the forecast turns.
Few upgrades change how a home reads the way a fresh exterior does. New siding, crisp windows, and a striking front door lift the impression on the street and the standing on the market — the things buyers and appraisers notice first.
There is no shortage of companies that will quote you a price on windows or siding. What sets a project apart is who actually shows up, what they install, and whether they are still around to stand behind it. On all three counts, Allstate has spent five decades earning Houston's trust the slow way.
We run our own crews rather than farming the work out to whoever is available that week, so the people at your home are trained on our standards and accountable to our name. We install products chosen for this climate specifically: James Hardie fiber cement with its ColorPlus 15-year no-paint finish, LP SmartSide engineered wood carrying a 50-year warranty, insulated Mastic vinyl with a lifetime warranty, Texas-made Vistamark windows, NT Presidential vinyl, and TDI windstorm-rated impact glass for coastal homes. And because a whole-home exterior is a real investment, we offer 12 months with no payments and no interest, so you can do it right and all at once instead of piecemeal.
We do. Every estimate is free and done in person, because you cannot properly measure windows, siding, or a door off a photo. We come to your home, measure carefully, talk through your options, and leave you with a clear, itemized price the same visit — no pressure and no obligation.
We serve the greater Houston area, including Houston, Sugar Land, Katy, The Woodlands, Cypress, Pearland, League City, and Galveston. If you are anywhere in the metro and not sure whether you are in our range, give us a call at (832) 204-1936 and we will let you know.
Yes. We offer 12 months with no payments and no interest, which makes a whole-home project far easier to take on all at once. We explain the terms plainly at your free estimate so there are no surprises.
We are a fully licensed and insured, family-owned company founded by James C. LaGrappe Sr. and serving Houston for more than 50 years. That longevity is not marketing — it is decades of homeowners who trusted us and referred their neighbors, reflected in our 4.7-star rating across nearly 200 Google reviews.
For siding, James Hardie fiber cement, LP SmartSide engineered wood, and insulated Mastic vinyl. For windows, Texas-made Vistamark, the NT Presidential single-hung vinyl line, and TDI windstorm-rated impact windows with Low-E double-pane glass. We also install NT sliding and French patio doors along with entry, replacement, and wrought-iron-and-glass doors.
Get honest pricing from a Houston family business that has installed windows and siding for over 50 years. No payments and no interest for 12 months.
Fill out the form and we'll reach out to schedule a time that works for you. No pressure — just honest advice and clear pricing.
Or call now: (832) 204-1936