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TRUSTED BY LLOYD HARBOR, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon383
    Verified window services reviews

Top-Rated Window pros in Lloyd Harbor - Updated Nov 2026

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

Serving Lloyd Harbor, 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."
Our Reputation
Reinforce Your Home
Expert Craftsmanship
Response time8 hrs
Response rate94%
34 neighbors recently requested a quote
Avatar for Duraglass
Duraglass
5.0(
45
)
New Windows - 2Window Glass - Install or ReplaceNew Window - Single+1 more

Serving Lloyd Harbor, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

"Emil from DuraGlass installed new glass on my windows. He was extremely professional, completed the work in a timely manner and neatly. I will definitely hire him for additional work. I highly recommend him."
Shower doors
Shower doors
Shower doors
Shower doors
Shower doors

+6

Response time2 hrs
Response rate95%
4 neighbors recently requested a quote
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Windows FAQs, answered by experts

If your windows are drafty, fogging up between panes, or hard to open or close, it might be time for a replacement. Unexplained increases in your energy bills, rotting frames, broken seals, and noticeable noise from outside can also indicate it’s time for new windows. In addition, if you find yourself frequently needing to repair your windows, it’s probably more cost-effective in the long run to replace them.

The rough opening refers to the framed space in the wall where the window will be placed. That means the full size of the space will be filled with both glass and frame once the new window is installed. For a standard window, a rough opening adds 1/2 inch to 3/4 inch to both the length and width.

Actually, condensation can mean that your windows are more energy efficient because the seal keeps cold air out and warm air in. In some cases, windows with poor seals can lead to more condensation, but they may allow the cold and warm air to mix and reduce condensation. If you’re worried about whether or not your windows are properly insulated, have a pro assess them.

Replacing basement windows can be worth the cost if replacement is necessary. If your windows are leaking and leading to water damage in your basement, it’s absolutely worth replacing them. Similarly, if your basement windows are no longer insulating your basement or pose a security risk, you need to replace them.

In some cases, you may be able to save money by repairing a window instead of replacing it. A contractor can help you decide the right course of action.

Vinyl windows have a few cons to consider before installing. For instance, while vinyl windows are energy efficient in terms of maintaining your home’s temperature, the actual process of making vinyl windows involves chemicals that are harmful for the environment. Vinyl windows are also less customizable than some other types of windows.

The Lloyd Harbor, NY homeowners’ guide to window services

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