2016 EBSCO Research Best Pick

Allied Siding & Windows

4th year as a Best Pick

  • A-Rated
  • Verified General Liability

"We install more Generations and Prism Simonton windows than anyone in Texas. We provide great prices for brand-name products installed by manufacturer-trained professionals with exemplary customer service. We're affordable, local, and reliable—three great reasons to choose Allied now and come back in the future."

Leonard Courtright | President

Areas Served:

West Houston Suburbs, North Houston Suburbs, Fort Bend County & Southwest Houston, The Heights/Midtown

  • Services Offered
    Allied specializes in installing brand-name window products for residential customers. Other home improvements include siding and gutter installation, roof replacement, attic radiant barriers, room additions, and custom outdoor patio covers.
  • Services Not Offered
    The company does not offer repair services.
  • Warranty
    Allied Siding & Windows offers a lifetime labor warranty on all work, and Simonton products come with a transferable double-lifetime warranty.
  • Awards & Certifications
    Allied is a Simonton Certified Master Installer and an EPA Lead-Safe Certified Firm.
  • Company History
    Allied has been serving Texas homeowners since 1988 and is currently run by Leonard Courtright, who has over 25 years in the service industry.
  • Product Information
    The company exclusively sells the private-label Generations window line from Simonton in the Houston, Dallas, and Austin areas.

Select Quotes from Customer Interviews

A selection of 342 homeowner reviews:


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The work they did is excellent quality, and they got it done promptly. They did all the eaves and overhang of my brick home, and they worked on a garage door. They did not do any windows. Their customer service was excellent. I didn't have any issues. I would definitely recommend them, and I'd definitely give them an A.
They were very responsive, and they took good care of us. They were very kind and courteous. We put new windows on our house. We chose them after talking to a lot of people. I'd give them an A.
They replaced my windows in pretty much the whole house. Their customer service was good. I didn't have to call them back for anything. I would recommend them, and I'd give them an A grade.
Overall, I had a good installation crew. The crew was really conscientious—if I had any questions, they would explain exactly what they were doing and why. They were very thorough, worked really hard, and cleaned up after themselves. They did replacement windows for all the windows in my house, and they did HardiePlank siding. I'd give these guys an A—they did a really good job. It all depends on the crew you get, but these guys were pretty good. They did a good job.
They took the other windows I had in, and they're supposed to be double-paned windows right now. They were real good. Plus, they cleaned up the back after they finished.
They did a good job. I had new windows put in. I'd give them an A rating.
It went well. They just put our windows in—that was it. I'd grade them an A.
They did the windows for the whole house. Their customer service was pretty good. We had to call back because some of it was not fitting well, and they had to come back. I would recommend them, and I would say they're an A.
We had our windows replaced probably nine months ago. They showed up when they were supposed to, and they did exactly what they quoted us that they would do. They did the whole house. Their customer service was great. I had to call them back to do some more caulking. I'd recommend them; they deserve an A.
I liked their thoroughness and their customer service, and they had a kind work crew that was always nice to my kids and accommodating. They got the job done as scheduled. They replaced all the windows in our house—43 windows. They also replaced our back door and the door jamb. I didn't have to call them back with issues when the work was done. We have already referred them. They get an A.

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