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900 Front St. Uniondale NY 11553 NYC & Long Island

Residential Roofing

Residential roofing and repair services

Windows & Doors

Residiential window installation & repair

Commercial Roofing

Commercial roofing installation and repair

Residential Siding

Residential siding installation & repair

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Roofing Contractor | Roofing, Siding and Window Installation

Alexander improvement is a family owned and operated establishment founded in 2000. We are one of the most trusted name in the city for home improvement. We are famous for our quality work and quality products. We give the best service in affordable price. We always try to give the best service that you deserves. Our quality service and dealing with customers is our strength. We communicate with respect and try to give you all information that you need.

Why Choose Us?

√ Flawless A+ BBB Rating

√ Licensed & Insured

√ 0% Financing Available

Call (516) 986 3600 for a free estimate

Need An Estimate?

We provide free estimates for your residential and commercial projects needs!

Need Financing?

Finance your home improvement project!

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No Interest

What Sets Us Apart?

“For over 15 years we have been providing our customers with quality work at affordable prices”

What Our Clients Are Saying

Alex and Marvin You will never find a better team to do work on your. They are the best on all of long island. The are honest and no surprise add on. The roof and the skylights look great. I would recommend them to all.


Merrick, NY

Thanks so much for working so well with me. Your expertise and suggestions helped so much. From beginning to end, the service from all of you has been excellent. Isis adds to your staff with her friendly & caring way. Your workers are diligent and cleaned up so well, you would never know they were there. A fabulous job done in one day, amazing. I would not hesitate to recommend you to others. I have already recommended you. Again, I thank you. I am very happy with my new roof.


Freeport NY / 3.26.2015

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