NISI Home Improvement Inc.

4.9(249 reviews)

Services NISI Home Improvement Inc. Provides

Roofing

Cedar Roofing, Coating, EPDM, Flat Roofs

8 more

Gutters

Gutter cleaning, Gutters installation

Siding

All kind of Siding

Windows

All kind of Windows

Garage Doors

All kind of Garage Doors

About

Protect and enhance your home with expert roofing, siding, windows, doors, gutters, and skylights. Serving Nassau & Suffolk with solutions that add value, beauty, and peace of mind. Find us easily for trusted, lasting results – NISI Home Improvement...

Griffin Rosen

5.0

Edited a month ago

The best in the business. Everyone that goes past my house when I’m outside compliments it. Changes mid project were easy and Rey was super accommodating. I’d only recommend NISI for exterior projects. Clean, respectful, hard working crew. Nobody can compare to these guys...

Lori Wist

5.0

a month ago

I found NISI through Google Maps, searching for contractors who were nearby. They had good reviews. When Rey came to talk to us we liked him right away and did not even bother getting any other estimates. He was very patient in explaining everything and gave us very good advice on all the details of the job. We felt that the price was fair and Rey was very patient with us as we made minor changes along the way.  He even had his crew work on a Sunday because we made a change that was going to require more time.The crew was hard-working and efficient, cleaning up every day before they left. I can’t find a single flaw in the work that they did. I recommend NISI highly...

Diane Fish

5.0

8 months ago

Higly recommend this well run, quality company.  I had Anderson 400 line windows installed plus my front door and storm door replaced.  The installation was impeccable, the crew very polite and efficient, and all work, from the first meeting for a quote to the completion of the job, was done in a timely manner.  Clean up was also carefully attended to in all rooms and outside.  Thank you Ray for managing and for your care in communicating with me whenever appropriate-an area where many in this business slip up, as I know, since my husband used to run a contracting company.  I love the beautiful windows, and it will be a warmer house this winter.  Thank you Nisi Home Improvement...

Michael Wahmann

5.0

2 months ago

I will only use NISI for my major home projects. Marvin, Ray and the team are incredibly professional, courteous and do incredible work. They put my windows in many years ago and now they just did my roof. I couldn’t be happier. A+++ service! I’ll be calling them again in a few years to do the siding on my house as well. Yes, “a few years,” because they’re a company that has lasted the test of time! I know they’ll be there for many years to come...

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