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4.6

(225 reviews)

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Avatar for Long Island Windows and Siding
Long Island Windows and Siding
4.5(
51
)

Serving Islip, NY and surrounding areas

Approved

In business since 1966

Free estimates

Emergency services offered

"Peter and his team did a wonderful job of presenting the product, discussing the job, giving a fair price, constant communication, as well as a wonderful install process. We would absolutely recommend this company for vinyl siding replacement and will be calling them for windows in the future."
Jerichp Tpke. Huntington, NY
Jericho Tpke. Huntington, NY
Jericho Tpke. Huntington, NY
Holbrook, NY
Holbrook, NY

+42

Response time8 hrs
Response rate94%
5 neighbors recently requested a quote
Avatar for Thermo Seal Windows Siding & Roofing
Thermo Seal Windows Siding & Roofing
4.7(
137
)

Serving Islip, NY and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"Great experience from beginning to end. Aaron the sales and service representative was professional, knowledgeable and attentive. The window quality is excellent. The installation was seamless they were on time and all business. They paid attention to details and the clean up at the end was fantastic. It was a pleasure all around I highly recommend Thermo Seal."
Windows Project
Windows Project
Windows Project
Windows Project
Additional Photos

+29

Response time6 days
2 neighbors recently requested a quote
Recommended by99%of homeowners
Happy Remodeling
4.9(
55
)

Serving Islip, NY and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"Sheldon and his crew did a fantastic job installing our staircase banister and making an adjustment to the panel to our bay window shutters. We had new windows installed and despite the installers assurance that the measurements would remain the same the bay window paneling came out smaller than expected. This was a problem because we also ordered shutters and blinds and we told the window installer we needed to ensure the measurements would remain the same. Of course when it came time to install the shutter the bay window measurements came out smaller. I contacted Sheldon and despite his busy schedule during the holiday season he stopped by the house to look over what needed to be done. Sheldon was honest in that he would not be able to get to me until after the holidays which was fine with me. He explained that he needed to obtain a specific bit in order to properly shave down the shutter to fit into the panel. Not soon after the holiday season Sheldon an his crew arrived and began the job. I appreciated the fact that Sheldon explained to me what he was doing and kept me apprised when running into an issue. (He was tenacious in resolving said issue!) Both jobs turned out terrific and I plan on hiring Sheldon again for other projects that I have coming up. After they left I went to grab my broom to clean up and lo and behold they left the job spotless!! Great job ! Quality work at a great rate. I would definitely recommend this company for your projects."
Window replacements
Window replacements
Window replacements
Sliding door and windows
Double Hung Windows with Grids

+7

Response time8 hrs
4 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for FG Window Repair Service
FG Window Repair Service
4.6(
86
)

Serving Islip, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Angelo and his crew did a great job replacing our windows. If you need window or glass service, call Angelo if you want fair pricing and wonderful job result. Thank you so much Angelo."
shower
window
MIRROR
MIRROR
GLASS DOOR REPAIR

+29

Response time1 day
Response rate93%
Recommended by95%of homeowners
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Windows questions, answered by experts

Yes, it is generally better and more cost-effective to replace all your windows at once. Contractors often lower the per-window labor and material costs for larger projects, saving you money in the long run. Installers may also quote a flat rate for overhead, making multiple small jobs more expensive than one large one.

Replacing all windows simultaneously offers other advantages:

  • Aesthetics and Home Value: It creates a cohesive style and uniform energy efficiency, which is appealing to potential home buyers.

  • Efficiency: The entire replacement process, which can take several weeks, is completed in a single, more efficient project.

However, replacing all windows requires a significant upfront investment. While you can replace just a few windows, experts recommend replacing at least five to eight at a time to avoid high overhead costs. An exception is when a single window is damaged; in that case, it can be replaced on its own.

You will need about half of a caulking cartridge to caulk one window. The average home has eight to 10 windows, so you would need about 4 or 5 cartridges to caulk every window in an average-sized house. However, you may not need to caulk all the windows at once. If just one window has a pesky draft, you may only need half of a cartridge to fill in the gaps.

Yes, but professionals use specialized equipment and cleaning solutions to safely achieve streak-free, long-lasting results.

Yes, you can absolutely put a screen on a casement window, and most casement windows come with screens. Unlike with a double-hung, single-hung, or sliding window, the screen in a casement window sits on the inside of the window so that the sash can freely open outward. Screens are especially important for casement windows because the large window opening the window provides leaves your home more open to bugs and outside debris than most other types of operable windows.

Whether you need a permit to install a bay window depends on the project's scope. Replacing an existing bay window typically does not require a permit. However, if you are adding a new bay window, requirements can vary. Adding a new bay window to the front of your house usually requires a building permit, while adding one to the side or back of your house often does not. It's always best to check with your local municipality to confirm the specific requirements in your area. Additionally, if you live in a historic district, you should consult your neighborhood association to ensure your project complies with their construction guidelines. If you're unsure about the process, a professional can provide guidance.

The Islip, NY homeowners’ guide to window services

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