Allied Siding & Windows
5th year as a Best Pick
certified company
A
rated
Based on 369 reviews
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5th year as a Best Pick Call
"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
Company Information
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 patio covers.
Services Not Offered
Allied does not offer repairs.
Warranty
Allied Siding & Windows offers a lifetime labor warranty on all work, and Simonton products come with a transferable double-lifetime warranty.
Company History
Allied has been serving Texas homeowners since 1988. Company president Leonard Courtright has over 25 years in the service industry.
Distinctions
Allied is a Simonton Certified Master Installer and an EPA Lead-Safe Certified Firm.
Additional Information
The company exclusively sells the private-label Generations window line from Simonton in the Houston, Dallas, and Austin areas.
Areas Served
West Houston Suburbs, North Houston Suburbs, Fort Bend County & Southwest Houston, The Heights/Midtown
A selection of 369 homeowner reviews:
“Allied did window work for me. Everybody from the gentleman that did the review to the people that did the actual removal and installation was very professional and courteous. I'm very pleased. The overall experience was A+, and I've recommended them to others.”
“They replaced the front and back doors. The best part of the whole job was that when they found damage, they fixed it. They went above and beyond. It was an A+ experience.”
“They did good, quality work. They did siding and windows for me, and I was satisfied with all of their work. I would grade them as an A. I've recommended them already.”
“It was a great experience. Everything was done properly, and they cleaned up after their work. They did windows and two doors. I'd give Allied an A.”
“It was window work and it was excellent; I have no complaints.”
“They did excellent work. I would recommend them.”
“They did fine. They installed windows and there was stuff that needed to be redone. I like that they did good work. Overall, I'd give them an A+.”
“My windows are working fine as of today. I would say my overall experience was A+.”
“They did siding and windows for me. I would grade my overall experience an A.”
“They did window replacement for me. I had never gotten windows before, so I don't have anything to compare it to, but they're great. I'd give my overall experience with them an A. Everything went great and I would recommend them.”
“They did windows for me. I would grade my overall experience as an A.”
“They did windows for me. I'd grade my experience as an A overall.”
“They did windows for us. I liked that they showed up when they said they were going to come. We did have a problem with one window, but they fixed it. Everything was done as we wanted it to be done. I would grade my overall experience with them as A-.”
“They did windows for me. My overall experience is an A.”
“They did a nice job on the windows. I would grade my experience overall as A.”
“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.”
“They did windows, if I recall correctly. They were great, and we liked the job. I have no complaints, so I would say they earned an A.”
“They were neat, they cleaned up, and they were nice. They put three doors in. I'd give them an A.”
“I got some windows from them. They did a great job. The windows keep out a lot of noise, and they are very secure. They were just what I was looking for. I would say they're an A.”
“I liked the service that they gave me, and I like the windows too. One of the windows was cracked—they fixed it right away, and I'm very happy with it. They replaced all the windows. ”
“They did the job they were supposed to do—they did windows just for the back. They did a good job. I've known about them for a long time. I'd give them an A.”
“Everything they said they were going to do, they did, and they did everything in a timely manner. They worked very professionally. They installed some new windows in the whole house. I would suggest them. They deserve an A.”
“My experience with Allied Siding & Windows was excellent. The product is excellent, and their crews were really good, informed, and very helpful. I have absolutely nothing bad to say about them at all. They installed panel windows upstairs and downstairs, and they installed double French doors in the back. The product is guaranteed for life. I'd rate them as an A.”
“Allied Siding & Windows did a good job. They changed all the windows, and their customer service was wonderful and professional. They deserve an A grade for their excellent work.”
“It was done quickly and professionally, and it was very good quality. They put wall windows in, and their customer service was very good. I'd recommend them highly—they're an A.”
“They did an excellent job, and they were honest. They replaced all the windows in our home, and I would give them an A.”
“Allied Siding & Windows replaced the windows for my whole house, and it was good. They had a good product to begin with, and the people who replaced the windows were very good. They could answer all my questions, and they knew exactly what they were doing. It was 13 or 14 windows, and they did it all in one day. They got it all done to my satisfaction. It was an A+, and I am very picky, so it says a lot that I would rate them highly.”
“They're excellent. I would use them again. They took care of windows and doors for me. I did get some estimates from other companies, but I decided to go with Allied based on some of the things they told me. I think they brought pictures in a catalog, too. My expectations matched the final product, so they get an A.”
“I love my windows. Allied was quick and efficient. They did the windows in the whole house, and they knew what they were talking about—they were knowledgeable. I chose them because my husband's coworker was using them, too, and he had a positive experience. I was referred to them by a trusted friend. I would give them an A rating.”
“Allied Siding & Windows did all the windows in my house—about 15 of them. They broke everything down about the stuff I was buying, and that made it a positive experience. It was cold when they installed, and they helped us keep our house warm. They offered advice on what to do when getting the windows installed. I heard what type of work they do, and I just went with them. I would give them an A+ grade because they did a great job.”
“They did some windows for me. The crew showed up on time, and they finished ahead of time. They charged what they quoted me; there were no additional charges. The windows look like they came with the house. I chose Allied for two reasons. Number one, they have been in business for so long. The other reason I chose them was their product—they had a better window than anybody else. They deserve an A+.”
“They did a front door and a back door. They installed my doors correctly, so they work. I chose them because they did my mom's house. She recommended them, and we just called the same sales guy. I would give them an A+.”
“Allied Siding & Windows was pretty timely. They said they would arrive at a certain time, and they did. They replaced all of the windows. They did a good job in the cleanup. I would grade them an A.”
“They did windows for me. It was a big job—the entire house. They were very thorough throughout their work, and they had good customer service. They were clean and picked up after themselves. I heard about the company from some friends. Allied gets an A.”
“They were responsive, and they had good customer service. I was always able to contact a rep. Even if I had to leave a message, they would return my phone calls. Allied did two windows for me, and I would give them an A.”
“Allied Siding & Windows did the windows on the whole house, and they totally went the extra mile for me. The gentlemen were extremely nice and very professional. They had to break the old windows to remove them, and they cleaned up perfectly; there was no glass anywhere. They certainly did a full service—A+.”
“They were very professional. They installed a sliding glass door and quite a few windows. I had used them before, and they were very dependable, so that's why I used them again. They showed up when they said they would, and they were very excellent. I would give them an A+.”
“Allied did all of my windows, and I thought the men worked quietly and efficiently. I have enjoyed the windows so much because I like the good look of them, and my house is so much brighter. Allied is an A+ company.”

Allied did a fabulous job. They replaced windows for the entire house. We were really impressed with the quality of work, and the windows are fabulous—they’ve held up wonderfully. Allied was the best fit because of the quality. I’d absolutely use them again.

I’m very, very pleased with Allied. They replaced our windows with Don Young windows and did an excellent job. They were on time, they were clean—we couldn’t have asked for a better job. I’d give them the highest grades across the board.

We love the windows. Allied did a really good job—it was excellent. They worked quickly and were all courteous. It was A+ work.

Allied’s work was excellent. I’d give them an A+ because it was very professional—starting with the salesman right on down to the people following up after the work. I was quite satisfied.

Allied did the windows. I have been very satisfied with the windows and with the installation itself. They did a great job; they cleaned everything up. I would tell other people that Allied did a great job, and I would recommend them. In fact, we were referred by a friend of ours that had some windows done by Allied, and we referred another couple, and they're getting windows done right now by Allied. We had an A+ experience.

This was the second time I used Allied Siding & Windows, and I like them. They did a great job; I don't have any complaints about them. The windows were really good. I'm very happy, and I would recommend them to anyone. I think I would rate them as A+.

They were A+. Allied installed new windows in my house. They were conscientious, on time, and did a wonderful job. This is the type of company that I would use again. I chose Allied because I'd heard about them for years, and people have spoken positively about the company. They're A+.

Allied Siding & Windows replaced some windows in my home. This was my first time using Allied. I would give them an A+.

I thought Allied was excellent. They put in windows for me. They're an A+.

They installed my windows. The products were good, and the guys that put in the windows were professional, quick, and they cleaned up after themselves, which was great. I would grade my experience with them an A+.

I got my windows with them. They were wonderful—I enjoyed working with them. I have no complaints—A+.

We were happy with their work. They did windows for us. Their installers were orderly, and they cleaned up after the job. A+.

I thought they were wonderful—they were fabulous. They replaced all the windows in my house. That was my first time using the company. A friend of my husband's had them do windows in their house, so that's how I heard about them. I'd give them an A+; I really would.

Allied Siding & Windows did all my windows for me. It was a pretty good experience. They did a good job. My house stays cool now; it's pretty cool—A/C in, heat out. Perfect. And nice work—they did a real clean job. I would give them an A+.

Allied Siding & Windows put some windows in my house. They did a good job, and they were on time. I would say they're an A+.

I had 22 windows installed, and they did very good work. I liked all aspects of the company and the people I dealt with. I would give them an A+.

The work Allied Siding & Windows did was fantastic. They replaced windows for me. The quality of the windows was excellent. The cleanup was great, too. I would put them at an A+, and I would use them again.

Allied Siding did a good job. They installed a kind of window that keeps the heat out, so I like that. They did a good job. It's a rental house, and I was here during the installation, and I was pleased with it. A+.

Allied Siding & Windows put windows in for us. The quality of the work was very good. They're an A+. I would tell someone looking for new windows that Allied did very good work.

I thought they were great—they did a great job on the windows. I hadn't used them before. I would give them an A+ grade.

They were great. Allied Siding & Windows replaced all of our windows. It makes a mess, but they cleaned it all up, inside and out. They even had a lady that dusted and swept inside, and they were very nice people. I had no problems with them. We had a few little issues after they left; not anything bad—it was just they forgot caulking a couple places and little things like that, but they came back and fixed it all, and they were great. Everything's held up fine. The windows are great, and they shut out a lot of the noise—we noticed that right away. And I don't notice my air conditioning going on as much as it did, which means they are being energy efficient, I think—because I can walk up to the windows now and not feel the heat or the cold. Before, we had single-pane windows that the builder put in, and you could go up to the window in the summer feel the heat and in the winter feel the cold, and I even had somebody power wash my sidewalk, and the overspray came through around the windows. But I don't expect these windows to do that at all. They're easy to clean, easy to pull out—I've already tried them, and they're very nice. And the neighbors all have commented how nice they look. I had three companies come out, and we had three estimates, and we picked Allied because of the quality of the window itself. We plan to use them again to build on a back porch; we have one, but it needs some work. I would give them an A+.

Allied put in my windows. I used them on that job because I'd used them before. Their customer service is fine. I would give them an A+.

They replaced all of the windows in our home. The quality of the work was very good. I would definitely use the company again. I'd have to give them an A+—they were very professional, very quick to call me back when I emailed them about possibly doing a bid. The called me back within probably 15 minutes, put up the estimate, and it was very well in order. As far as the windows, they came on time to install them, had them all done in one day, and did a great job, so I would definitely tell a friend or someone to call them.

I liked Allied's customer service, the quality of the product, and the quality of their work. They replaced windows in my home. They did an outstanding job. I loved it. They did it all in one day. We called them in the spring of this year, and three weeks later they had our windows in, and the work was done. I would give them an A+ grade. I was very pleased with the service and the work that they did.

Allied Siding is a great company. They did all my windows. I heard about the company from a friend that I work with. I would use them again. I would give them an A+ because everything was great.

The two installers from Allied were extremely professional. They took a lot of care with all our belongings. We have antique furniture, and so they were very, very careful with moving anything that needed to be moved, which tickled me. They installed new windows on the entire house. I would give them an A+.

Allied did windows for me. I was very satisfied with their product and the installation of the windows. I would grade them the highest, A+.

Allied Siding & Windows put in windows, and they're working on my doors now. If I had to do windows again, I would call Allied. That was my first time using them, when they did the windows. I probably heard about them from a neighbor. They did excellent cleanup. I'd say they're A+.

They came in and replaced all of my windows. There was a team of guys that came in, and they were very professional, cleaned up after themselves. They did a really good job. They finished job quickly. In fact, they got it all in on a Thursday. All of the windows were in on Thursday. Friday, all they did was came and caulked, cleaned the windows, cleaned up things, and they were out of there. It was a really, really good amount of time, very much so. A friend of mine had told me about them; she used them, so I just went off of her lead, and then I was really pleased with it. So far, everything's held up wonderful. They should be in there for a lifetime, but so far it's really good. They're an A+.

Allied Siding & Windows replaced windows for us. They came out when they said they would and did the job when they said they would, and the guys that did the work did a real good job. It was a good experience. I actually called them just a couple days ago to come out and give me another estimate on some more windows, so it was great—it was no problem. I would grade them an A+.

Allied installed windows for me. Everything was good. I purchased single-hung windows. The cleanup was good. I'd give them an A.

I think they came in here and every day they cleaned up. Whenever they messed up something, they cleaned up, and they are kind of on schedule. It's kind of a new company to us—we got to try it out, and it's pretty good. I would rate them an A.

Allied Siding & Windows did windows for me. They did really good. I'd grade them an A. The workers were great.

Allied did windows for me. I was satisfied with the installation. The cleanup was very good. They arrived on time and completed the work as expected. They're an A.

They seemed to do a thorough job and were quick and knew exactly what they were doing. They put new windows in our whole house. They came and installed the windows, and then they demonstrated how to use them. I'd rate them an A.

They replaced windows, and two workers came out to do my windows. Those individuals were very knowledgeable. The customer service was fine—it was acceptable. The cleanup was fine too. I would grade them an A.

I thought the work they did was excellent. I liked the customer service with the salesman. They replaced all of our windows in the house. It was a lot of windows—20 to 25, something like that. Two to three technicians came out to help with that. They're an A.

Allied Siding & Windows replaced all the windows in one of my houses and half the windows in one of my other houses. I used them for both jobs because they came when they said they would, and they cleaned up their mess when they left, and it looked like they had never been here except for the new windows. It's an A.

Allied did very good work. It was positive because of the quality of work—it's lasted for a long period of time. I had them do windows as well as radiant barrier and insulation. It was two separate incidences. I would give them an A.

Allied did siding and windows for me over the last year. The crew was very efficient and very cooperative. They were very considerate of the property, and the quality of their work was very good. I'd grade them an A.

They did window installation for me. I was satisfied with the products they used and the installation. I would recommend them. They're an A.

Allied did a complete window replacement. This is my first time using that company, and I would reuse them. I'd rate them an A.

We like Allied Siding & Windows. They did great. That was our first time using the company, and I wish we would have gotten them sooner. They took out three windows in our living room and put them in. They also took a garden window out of the study and put a straight window in, and then they took a huge window out of the play room and put a big window back in. We had two windows put in in our bedroom, too. The quality of the new windows is fine. The cleanup was perfect. I would use this company again—they're an A. There were two gentlemen who came and did it. It was raining the day they came, and they made sure their feet were wiped off before they came in. They cleaned up their whole mess. If I hadn't known, I would have never even known they had been here.

Allied Siding & Windows installed ten windows in my house. That was the first time that I used this company. We chose them because somebody referred us to them. I feel this company is recommendable to others.

Allied Siding & Windows was just fine. They put in some new windows, and they're just fine.

I used Allied Siding & Windows for the first time. I would use this company in the future. They replaced all windows in the house. The cleanup was pretty good. I'd recommend them.