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TRUSTED BY CENTRAL ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon217
    Verified window services reviews

Top-Rated Window pros in Central Islip - Updated Nov 2026

Avatar for Long Island Windows and Siding
Long Island Windows and Siding
4.5(
51
)
New Windows - 6 +

Serving Central Islip, NY and surrounding areas

Approved

In business since 1966

Free estimates

Emergency services offered

"They addressed all of my concerns without hesitation and to my satisfaction. They gave me a fair price. I thought the workers were experienced and had a good technique of capping the windows to prevent water leakage. They exceeded my expectations."
Our Reputation
Reinforce Your Home
Expert Craftsmanship
Response time8 hrs
Response rate94%
36 neighbors recently requested a quote
Avatar for FG Window Repair Service
FG Window Repair Service
4.6(
86
)
Window Glass - Install or Replace

Serving Central Islip, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"I canâ t say enough about Angelo and his worker. They came here on Wednesday to give me an estimate and they were back here the next day repairing my window. They were professional, courteous and affordable. I will be recommending them to all of my friends and family."
shower
window
MIRROR
MIRROR
GLASS DOOR REPAIR

+29

Response time1 day
Response rate93%
Recommended by95%of homeowners
Happy Remodeling
4.7(
57
)
New Windows - 6 +

Serving Central Islip, NY and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"I hired 5 Star Home Improvement to install 5 new Andersen windows and an exterior door. The price was reasonable. Freddie and his team worked diligently to make sure windows and the door are installed properly. They covered furniture and floors during installation and cleaned up after the job was done. Overall, Iâ m satisfied with the job."
Window replacements
Window replacements
Window replacements
Sliding door and windows
Double Hung Windows with Grids

+7

Response time8 hrs
3 neighbors recently requested a quote
Recommended by88%of homeowners
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Windows FAQs, answered by experts

The best thing to clean windows with is a mixture of white vinegar, warm water, and dish soap. This will remove dirt, pollen, and grime without destroying any tints or protective films on your glass. You can also use a commercial window cleaner, but make sure to choose one that doesn’t have ammonia in it, as this can damage window coverings and frame materials over time.

In short, it depends. After 20 years, the glass in your windows is less energy efficient, which can cause increased electricity bills. You might also see signs of water damage or natural wear and tear over the years. However, with proper maintenance, some window frames can last up to 50 years, so you may only need to replace the glass to save on energy. 

At the same time, window replacement is a major investment, so replacing the glass in rooms most impacted by outdoor temperatures is one way to avoid going all-in to replace your windows.

Yes, triple-pane windows are more resistant to condensation. They help to reduce interior condensation that forms as a result of warmer temperatures inside your home than outside it. This makes them a good fit for cooler climates, particularly with newer, well-sealed homes that retain higher levels of moisture in the winter months.

It is legal to put bars on windows in most places, but it depends on the type of bars you choose and the regulations in your area. For example, there are building codes in Mississippi, California, and Texas that forbid the use of permanently closed burglar bars on windows due to concerns about people getting trapped inside during fires.

Windows last between 15 and 30 years on average. The glass tends to last for around 20 years, while the frames last up to 50 years. This varies by the type of window frame material, glass quality, location, and level of maintenance. Wood frames have the shortest lifespan and require repainting or resealing every couple of years, while fiberglass has one of the longest lifespans.

The Central Islip, NY homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.