ProVia Windows & Siding Contractor — Replacement Windows Long Island

Trusted by Over 5,000 Homeowners for Windows & Siding

Long Island Windows & Siding is a certified ProVia contractor providing replacement windows and siding installation for Nassau and Suffolk County homeowners. We install energy-efficient ProVia windows, including double-hung and sliding styles, engineered to withstand Long Island’s coastal climate. Every project includes a free, no-obligation estimate.

As a window replacement company on Long Island, we combine ProVia’s professional-class products with certified installation, transparent pricing, and a reputation built on over 5,000 satisfied customers.

Why Choose a ProVia‑Expert Contractor?

ProVia is known nationwide for manufacturing some of the most durable, energy‑efficient, and beautifully engineered windows and siding products available today. But to get the full benefit of ProVia’s performance, the installation must be done exactly to manufacturer standards.

As an expert ProVia contractors, we provide:

Manufacturer‑Approved Installation

Every window and siding panel is installed according to ProVia’s strict guidelines, ensuring maximum energy efficiency, weather protection, and longevity.

Access to Premium ProVia Products

We offer the full line of ProVia windows and siding, including:

Aeris™ wood‑interior windows

Endure™ high‑performance vinyl windows

Aspect™ energy‑efficient vinyl windows

CedarMAX® insulated siding

Cedar Peaks® premium vinyl siding

Extended Warranty Protection

ProVia products installed by certified contractors qualify for enhanced warranty coverage — giving you long‑term peace of mind.

Superior Craftsmanship

Our installers are trained, tested, and approved by Suffolk & Nassau County to ensure flawless results on every project.

ProVia Windows — Energy-Efficient Replacement Windows for Long Island

Long Island homeowners face unique challenges — coastal winds, salt air, humidity, and extreme temperature swings. Our energy-efficient replacement windows are engineered to handle all of it, with options including double-hung, sliding, casement, and bay windows.

Double-Hung Window Installation: Classic, versatile design with two operable sashes for easy cleaning and airflow control.
Sliding Windows Installation: Smooth, space-saving operation, ideal for rooms with limited vertical clearance.
Casement & Bay Windows: Additional ProVia styles for panoramic views and maximum ventilation.

Benefits of ProVia Windows

01 Exceptional energy efficiency

ENERGY STAR® certified

02 Multi‑pane glass packages

For insulation and noise reduction

03 Durable frames

That resist warping, cracking, and fading

04 Beautiful design options

To match any home style

05 Low‑maintenance materials

That last for decades

Benefits of Energy Efficient Replacement Windows

Energy efficient replacement windows offer real, measurable advantages for Long Island homeowners:

✓ Lower Energy Bills: ENERGY STAR-certified glazing reduces heating and cooling costs year-round.

✓ Improved Comfort: Multi-pane glass and warm-edge spacers eliminate drafts and cold spots.

✓ Noise Reduction: Insulated frames and glass packages reduce outside noise, especially valuable near busy Long Island roads.

✓ Increased Home Value: Updated, efficient windows are a top-ranked renovation for resale value.

✓ Reduced Condensation: Advanced glazing technology minimizes moisture buildup between panes.

Whether you’re replacing a single window or upgrading your entire home, our ProVia‑Professional team ensures a perfect fit and long‑lasting performance.

ProVia Siding: Strength, Beauty & Lifetime Durability

ProVia siding is engineered to outperform traditional vinyl siding in every category — strength, insulation, appearance, and weather resistance.

Why Homeowners Choose ProVia Siding

Insulated options: for improved energy savings
Realistic woodgrain textures: for a premium look
Fade‑resistant color technology
Impact‑resistant materials
Low maintenance: with no painting required

Our team installs ProVia siding with precision, ensuring tight seams, secure fastening, and a flawless finish that boosts curb appeal and home value.

Why Long Island Windows & Siding Is the Right Choice

With decades of experience and thousands of successful installations, we are one of Long Island’s most trusted home improvement companies.

What Sets Us Apart

Over 5,000 satisfied customers
Licensed & insured in Nassau and Suffolk County
ProVia‑experts installation team
Local, family‑owned business
Transparent pricing & detailed proposals
Top‑rated customer service

We treat every home like it’s our own — and every project like it’s our reputation.

Window Replacement Company Serving Nassau & Suffolk County

As a trusted window replacement company on Long Island, we provide ProVia window and siding installation, including replacement window cost estimates, for homeowners throughout Nassau County and Suffolk County.

We proudly serve homeowners throughout Long Island, including:

Nassau County:

Garden City
Mineola
Rockville Centre
Freeport
Lynbrook
Valley Stream
Floral Park
Rockville Centre
New Hyde Park
Great Neck
Port Washington

Massapequa
Merrick
Bellmore
Wantagh
Seaford
Levittown
East Meadow
Westbury
Hicksville
Syosset

Jericho
Woodbury
Plainview
Bethpage
Baldwin
Oceanside
Island Park
Roslyn
Manhasset
Lake Success

Suffolk County:

Huntington
Smithtown
Islip
Babylon
Brookhaven
Riverhead
Southampton
East Hampton
Patchogue

Ronkonkoma
Stony Brook
Setauket
Commack
Dix Hills
Melville
Bay Shore
Sayville
West Islip

Northport
Kings Park
Holbrook
Holtsville
Medford
Shirley
Mastic
Manorville
Wading River

Frequently Asked Questions

Q. Are you officially certified contractors

Ans. Yes. Our installers are trained and approved by Nassau & Suffolk County to ensure proper installation and warranty protection.

Q. Do ProVia windows and siding come with a warranty?

Ans. Absolutely. ProVia offers industry‑leading warranties, and certified installation ensures maximum coverage.

Q: How much does window replacement cost in Nassau County?

Ans: Window replacement costs vary by size, style, and material. Every Nassau County homeowner receives a free, detailed estimate before work begins, with no hidden fees.

Q: What are the benefits of energy efficient replacement windows?

Ans: Energy efficient replacement windows lower utility bills, reduce drafts, minimize outside noise, and increase home resale value, while withstanding Long Island’s coastal climate.

Q: Are you a trusted window replacement company on Long Island?

Ans: Yes, we are a certified ProVia contractor with over 5,000 satisfied customers across Nassau and Suffolk County, backed by transparent pricing and manufacturer warranties.

Q. How long does installation take?

Ans. Most window projects take 1–2 days. Siding projects vary based on home size but typically take 3–7 days.

Q. Do you offer financing?

Ans. Yes — flexible financing options are available for qualified homeowners.

Q: What is the cost of double-hung window installation?

Ans: Double-hung window installation cost depends on window size, glass package, and frame material. We provide a free, itemized estimate for every project.

Q: Do you install sliding windows and double-hung windows?

Ans: Yes, we install a full range of ProVia window styles, including sliding, double-hung, casement, and bay windows, tailored to your home’s design and airflow needs.

Get Started With a ProVia‑Expert Contractor Today

Upgrade your home with the best products and the best installation team on Long Island.

Contact Long Island Windows & Siding today.

GET A SENSIBLE PAYMENT PLAN THAT FITS YOUR BUDGET

If you know you want to get your home exterior project done, but are feeling stressed about paying for it all at once, we can help.

Our financing partners have sensible payment plans that work for homeowners who prefer to pay in installments. You can also ask your Long Island Windows and Siding sales representative about the details!

SAVE ON LONG ISLAND WINDOW AND SIDING!

Upgrade Your Windows & Siding Today!

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Our Customers LOVE The Results

| can understand why this company has such outstanding reviews. Peter and his crew treated siding my home like they were siding thelr own. They take pride in their work and care about detalls and customer satisfaction. All were professional and courteous. | could not be more satisfied. | highly recommend this company. Thanks Pete!

They addressed all of my concems without hesitation and to my satisfaction. They gave me a fair price. | ; thought the workers were experienced and had a good technique of capping the windows to prevent water leakage. They exceeded my expectations.

Steve Zito, owner explained window features clearly with filustrations of each type, brought actual sample, measured twice, no pressuring, very fair prices, references. Installers Joe and Jesse very professional, knew exactly i what to do, perfect fit, great cleanup, used Hepa vac so no pollution, we are very happy would use this company again!

Hire these guys, they are amazing, Steve |s the best, the crew Is excellent, Cannot be happier with the job. | didn't even expect my windows and garage door to look this much better after a siding replacement, they framed it all, put the white boarders around, perfect.

We were very pleased with the professionalism of Steve, one of the owners, who oversaw the job from beginning to end. His workers were talented, efficient and awesome from beginning to end! Highly recommend this company!! Our home looks beautiful!

Excellent Company Highly recommended

They were professional and got the job done qu ickly. The owner Pete and the Head managing sales Rep Steve constantly inspected the work, Their installation team was professional and worked with me on any changes. Their head installation manager Ivas was professional as well.

These guys did a great job, completed work on time and on budget! That's all you can ask for professional like these guys. Thanks!

All Island is an amazing company! I've renovated 6 homes and they are, without a doubt, the best I've ever dealt with. They're completely professional, fast, neat and generally did a wonderful job. They answered every question | had and handied every concern and did it all at a reasonable price and in half the time | expected, Peter was wonderful to work! I'd hire them again in a minute and | recommend them highly.

Steve was great to work with. He addressed all my concerns, Not an easy task since | was constantly googling every step they took. His team was prompt, knowledgeable, hard working. Great clean/up after they finished, | would absolutely recommend them.

Professional

Stephen Zito the genera) manager was very professional and knowledgeable, He explained things thorough and discussed options. The workers were professional and hard workers, He went the extra mile. My house looks beautiful and | am so happy he did the Job!

All Island did a phenomenal job, start to finish. We felt Steve, the owner, was fair, professional, and willing to work with us. His crew Is great. ;

What a great company to work with - from Sales to install it was seemless. Peter was thorough and communicated with me every step of the way, The 2 guys (Joe & Bill) who installed my Anderson patio door were So clean and neat - they did an outstanding job and I Just love my new door. | replaced French doors with this slider as it is more practical. | have been looking for someone to do this project for about 1 year. Anybody that came to give me an estimate never got back to me - it was really unbefievableil!!! | highly highly recommend All Island Window & Siding. | promise you this will be the best decision you make.

Peter always followed up from day one with any questions. He provided options for replacing all the windows and front door in my condo. He ensured the job was done right and made sure | was satisfied with the work. Very kind person and no high sales pressure. His prices were better than another company | contacted,

Extremely happy with the work done by these professionals. One of the lowest bids, theya ve been in business for a long time, they take pride in their work, high quality materials used and attention to detail. All they do is siding and windows, so they get the job done right and get job done quicker than a general contractor would as they specialize in this area of construction. Steve was onsite everyday, quickly responds to calls and texts and the men working for him are hard-working, respectful gentlemen. The siding came out absolutely beautiful. They even did a litte extra with no added costs. They did a fantastic job cleaning up when they finished, they used magnets daily to keep nails off the driveway and out of my tires. You cana t go wrong with All Island Windows and Siding. Highly recommended! 4 Il recommend them to anyone | know in need of siding, doors and/or windows.

Steve and his company was easy to work with. He was always on time and communicates well. | even hired him to de another smail jab on another property. | gave 4.5 star just because they had to come back to fix something, but they fixed it promptly and without question. They are a five star company. | would hire them again.

Stephen is extremely professional, and does and excellent job for any of your siding needs. | would Hightly reccomend his company to anyone In Long Island. | am highly satisfied with their work.

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