Door & Window Replacement

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Door Replacement

Whether you need replacement doors or old doors repaired at a home or business, we’re the company to call. Doors are the first point of entry into any home or business and having the right door makes your home feel more inviting not to mention secure. Our team works around the clock on Long Island, NY to meet your door replacement and repair needs.

Types Of Replacement Doors We Install

  • Entry – The main front entrance to your home, usually facing the street.
  • Hinged Patio – Panels made mainly from glass that swing in or out.
  • Sliding Patio – Panels made mainly from glass, one panel slides horizontally to open and close.
  • Storm – Used with an entry door for added protection from the elements. Provides energy efficiency, light and ventilation.
  • Custom – Hinged doors available in a variety of sizes and shapes such as the Springline or Full Arch Head.​

10 Most Popular Replacement Door Types

Wood Doors

  • Widely used—and the material of choice for custom and luxury installations—wood doors may be found in designs and finishes to fit virtually any home style, including Colonial, Craftsman, and Victorian among many others.

Metal Doors

  • Sturdy, low-maintenance, and affordable, steel is a leading choice among exterior doors. Most feature an insulating foam core covered by a durable layer of steel, which in turn can be painted to complement any color palette.

Fiberglass Doors

  • Fiberglass doors are a popular choice for installation in entryways. Energy efficient, durable, and affordable, they are available in a variety of styles and finishes, including embossed grain patterns, which emulate the appearance of wood.

Flush Doors

  • Solid doors with no decoration are known as having a flush style. Most commonly used as interior doors, they can be painted, stained, or even covered with wallpaper.

Panels Doors

  • Also called stile-and-rail doors, panel doors typically come in 4-, 6-, or 8-panel configurations. Whether used in exterior or interior applications, they feature smooth, framed sections that surround deeply embossed panels. Often, one or more panels will feature a window insert, or lite.

Dutch Doors

  • Dutch doors are divided horizontally, so the top half can be open while the bottom half remains closed. Dating from the 17th century, this style originally was designed to admit light and air while keeping out wild animals and livestock.

French Doors

  • Highly decorative, French, or casement, doors usually come in pairs, with each door featuring a frame around one or more window panels. French doors typically are installed to introduce formal living areas or to provide access to outdoor living areas.

Barn Doors

  • With reclaimed wood furnishings and country decor becoming more popular, barn doors have left the farmyard and entered our homes. Genuine or reproduction, barn doors are often characterized by rough-hewn wood embellished with classic “z” or “x” designs in wrought iron.

Pocket Doors

  • These clever space-saving interior doors are designed to disappear into the wall when closed. Ideal for areas with little room for the swing of a standard door with hinges, pocket doors travel on rollers suspended from an overhead track. Often, they have a hollow core and are constructed of lightweight materials to facilitate handling.

Patio Doors

  • Typically constructed of full-size glass panels, patio doors may feature a hinged or sliding construction. Designed to draw the eye, they allow for an easy, attractive transition between indoor and outdoor environments.

Window Replacement

If you’re interested in cutting energy costs, lowering utility bills, and enjoying a more comfortable home, you may want to consider replacing your windows with more modern and efficient models. Our Long Island, NY area professional roofing contractors can help you find the right solution for your aging windows and rising energy bills. Conlon Exteriors has been installing replacement windows and skylights in the Long Island, NY area for over 20 years. We offer a variety of beautiful wood and vinyl windows.

Our difference is that we really care how your new windows look, and we will do whatever it takes to make sure that you are highly satisfied with your new windows.We offer window replacement from a variety of Vendors like Alside, Anderson, Pella, Jeldwin, etc., which not only aesthetically improve your home but help you save energy and money. Each window is manufactured for easy cleaning. If your windows are showing their age, inefficient, or simply unattractive, we can help you find the ideal window replacements to fit your needs or budget.

Window Replacement Benefits Include:

  • Lower HVAC costs
  • Energy efficiency
  • Improved comfort
  • Reduced condensation
  • Increased light and view
  • Reduced fading

Why Choose Window Replacement?

Whether your windows are visibly damaged or you suspect there may be structural issues, you should never put off replacing the windows in your home. Here are a number of clear advantages to choosing to replace your windows:

  • Modern vinyl windows will not scratch, warp, rot, or degrade over time.
  • Up to a third of the energy loss in a home can take place through the windows. Installing more efficient windows is an easy way to save money.
  • High quality windows let more sunlight into the house, improving mood and work efficiency.
  • New window models can be seen and tested first-hand. Before we install, we do a one-on-one consultation with our prospective customers and show them what is currently available.
  • Our Long Island, NY area experts are fully certified to do professional window replacements.
  • Our workmanship and materials come with a 100% satisfaction guarantee.

​What to Expect During a Window Replacement

The process of replacing your windows is surprisingly easy! Our experts will come to your house, place down drop cloths, protect the area, remove the old windows, install the new ones, and do a thorough inspection and quality check before cleaning up every bit of debris from the installation process. We offer a range of payment and financing options, making a wide selection of new windows affordable for almost any homeowner. If you ever have questions or concerns about your replacement windows, our team of experts on window installation and roofing can always be reached by phone or email.

Window Condensation

What Is Condensation?
Is your glass “sweating” – is water beading or ice forming on the inside surface of your windows and skylights? Don’t be too quick to blame the windows! There’s a good chance that what you are seeing is condensation, a sign that there is excess humidity in your home. Humidity – water vapor mixed with air – is drawn to the coolest surfaces, such as your window. Cool air cannot hold as much moisture as warm air, so windows and doors often collect this moisture and make it visible. A surface that is cooler than room temperature is more likely to show condensation.

​What Causes Condensation?
Indoor moisture is caused by a variety of factors, including cooking, showering, running dishwashers, storing firewood, pets, fish tanks, plants, clothes dryers that are not vented properly, even breathing. Your new windows or skylights are most likely showing condensation more than your old ones because they are more airtight – less air is entering your home from the outside. The air leaking from older windows/skylights evaporated the moisture before it could collect.

While some humidity is necessary for health and comfort, chronic and excessive condensation should be tipping you off to take some action before serious, costly damage, such as decay, mold, paint problems, and even major structural damage occur.

What about condensation in between the panes of glass? This may indicate a seal failure, and you should contact your Window dealer, as this is covered by your warranty.

Why is condensation forming at the bottom of the window/skylight? Each insulated unit is a sealed atmosphere, and the air in this atmosphere becomes layered, just as in any closed space. Warm air rises, and since humidity is attracted to cooler air, condensation will often show near the bottom of the glass.
Temporary Condensation
There are several ways to tell if the condensation on your windows/skylights and doors is temporary. When and where does condensation usually form:

  • During baths and showers, cooking, dishwashing, laundry, or other steam producing occasions?
  • During the start of each heating season? Houses absorb moisture during humid summers. This will dry out after a few weeks of heating.
  • During sharp temperature changes? Sudden drops in temperature, especially during the heating season, can create temporary condensation.
  • During new construction or remodeling? Building materials contain a great deal of moisture. When the heat is turned on, this moisture will flow into the air inside the home. It usually will disappear after the first heating season.

Problem Condensation
Excess moisture in your home may eventually cause problems. It may be time to take action if you notice the following signs in your house:

  • Condensation remains on windows/skylights and doors throughout the day, even when the outside temperature has warmed up.
  • Condensation is forming and running down the walls. It may also be causing discoloration, staining, peeling wallpaper and blistering paint.
  • The air smells musty – this could indicate mold, mildew, or in the worst cases, rot – or odors from everyday household activities that linger too long. Odors increase in intensity with high relative humidity.
  • Mold, mildew, rot and/or decay are visible. Mold and mildew thrive in most areas and can cause health and house damage.

​Interior Condensation – Winter Prone
Interior condensation forms on the inside pane of the glass within your home. This is the type of condensation most homeowners notice and become concerned about. It usually forms in the winter, as the outside temperature drops, the inside surface will also get cooler; therefore, condensation will form at lower relative humidity on cold days. The colder the air outside, the more likely condensation is to occur.

​Exterior Condensation – Summer Prone
Conversely, exterior condensation, which forms on the outside pane of the window, typically occurs in the summer. This type of condensation can occur for several reasons: the glass temperature drops below the dew point temperature of the outside air, the air is still, there is a high relative humidity, there is a clear night sky, or there are plants located near your window.
While unsightly, exterior condensation should not concern you since it usually evaporates as the day wears on and will not affect the interior of your home. Since you cannot control the relative humidity outside your home, the only step you can take to combat exterior condensation is to warm the inside surface of the window, as this is a way to warm the outside surface. Seeing exterior condensation on those rare days should be reassurance that your windows are doing their job: keeping your heating and cooling in your home where it belongs and saving you money.

The facts about window, skylight and door condensation and what can be done about it:

  • During winter months, homeowners often encounter condensation on the windows/skylights in their homes. The goal of this letter is to define the problem, the causes, and the solutions to this bothersome and ever present problem.
  • Of course, windows/skylights do not manufacture water. If you were out in the desert, you would want a canteen with you, not a window. But people seem to believe that windows do manufacture water. They call up window contractors and say, "My windows/skylights are all wet, and it must be the fault of the window/skylight." Well, not quite….Water on windows is condensation, and it can be a problem. However, it's not a window problem, and the solution does not come from the windows.
  • If you are troubled during the fall and winter by condensation on the windows of your home, you aren't alone. It is a common problem in cold climates. The typical family produces a lot of moisture indoors (washing, showering, cooking, just breathing, etc.) and it can be difficult to reduce it.
  • Understanding the causes of the problem is the first step in solving it. Condensation and ice form on windows/skylights because the window/skylight glass surface is below the dew point for the air near the window/skylight glass, so some of the moisture in the air condenses on the glass. The higher the relative humidity of the air near the window, the higher the temperature of the dew point.

Answers to your questions about condensation, indoor humidity and exterior condensation:

  • Condensation is moisture that suddenly appears in cold weather on the interior or exterior of windows and patio door glass, drips on the floor or freezes on the glass.
  • Seasonally, it can be an annoying problem. It may seem natural to blame the windows/skylights and/or doors. Interior condensation is really an indication of excess humidity in the home.
  • Windows serve as visible areas for moisture to condense, warning you that there is too much moisture inside your home. Windows/Skylights & Doors do not cause condensation.
  • Exterior condensation, on the other hand is a form of dew-the glass simply provides a surface on which the moisture can condense.
  • The important thing to realize is excessive humidity is causing window/skylight & door condensation.

Questions & Answers

  1. Does Condensation occur in winter? Condensation is mostly common in winter, but it can occur whenever water vapor in the air comes in contact with a surface temperature lower than the dew point (the temperature at which air becomes saturates and produced dew). In rare instances, during spring & fall (and occasionally, during hot, humid summer days), exterior condensation can also form on windows/skylights. This is usually a good indicator of the presence of energy efficient windows.
  2. Is this a sign of poor quality windows or construction of my house? No, it is a sign of higher quality construction of windows, doors and your home construction. The newer home designs do not allow air and moisture escape of infiltration as the older homes, so it is very important to watch the humidity levels in the house.
  3. How does indoor humidity affect window/skylight condensation?​ Excessive humidity is the cause of most window condensation. As the outside temperature drops, the window glass temperature also drops. When moist air comes in contact with the cold glass pane, the moisture condenses and forms water droplets. Determining when the condensation will occur and preventing depends on the energy efficiency of the window, the relative indoor humidity of the home, and the exterior and interior temperature.
  4. Can excess condensation damage windows? Excess window condensation can cause paint to peel from the sash of wood windows. Excess moisture can also damage the wood window frame on a wood window. Normally it does not affect vinyl or aluminum windows.
  5. Is exterior condensation anything to worry about? Dew on windows is a natural atmospheric phenomenon, and it does not mean your windows/skylights are leaking air or malfunctioning in any way. In fact, exterior condensation is a sign of energy efficiency, since it means the outside pane is thoroughly insulated from the heat indoors. Depending on where you live, it may occur just a handful of times per season.
  6. Are there any cases where window/skylight condensation is only temporary? New Construction: Wood, plaster, cement and other building materials used in new construction and remodeling produce a great deal of moisture. When the heating season starts, this moisture will gradually flow out into the air in the home. It will usually disappear during the first heating season and not cause any further trouble. Heating Season: At the beginning of the heating season, there may be a certain amount of temporary condensation. During the humid summer months, your house can absorb some moisture. After the first few weeks of heating, this moisture should dissipate. Preceding Temperature Shifts: Sharp, quick drops in temperature can also create temporary condensation problems during the heating season.
  7. How else can I reduce indoor humidity? Vent all gas appliances, clothes dryers and exhaust fans to the outside. Your attic and crawl space should also be ventilated. Cover the earth in the crawl space with a good vapor barrier. When cooking, make sure to run the exhaust fans in the kitchen. When you bathe or shower, run the fans in the bathroom until your mirror is clear. Avoid storing firewood in your house. If your home is extremely "tight" it may be helpful to install an air-to-air heat exchanger. As the outside air temperature drops, you should also decrease the humidity level within your home. The bottom line: Maintain as high a relative humidity level as you can for comfort, and then reduce the humidity level when condensation occurs. In many homes this simply means turning off your humidifiers in the winter.
  8. Does the amount of condensation depend on the window type? Sometimes. Recessed windows like bow and bay windows usually experience more condensation than other window styles. This is because air circulated around those window types is usually more restricted, and since they hang away from the insulated house wall, bays and bows could be a few degrees cooler in temperature. Placing a common electric fan near the window to produce air circulation may also be helpful.
  9. Do drapes and shades affect window condensation? Drapes and other window coverings can contribute to a condensation problem by restricting the flow of warm room air over the glass surface. Therefore, indoor condensation is more likely to occur when the drapes are closed or the shades are pulled down.
  10. Why wasn't it always there? Old drafty windows/skylights allow moisture to escape through inefficient seals and cracks. Today's technology produced more energy efficient, "tighter" homes. This is great for keeping your home more comfortable, quieter, and clean, BUT by sealing your home you are also keeping moisture in. In today's homes it is very easy to build up extremely high levels of humidity.
  11. When should I be concerned?​ If you find condensation between the two or three layers of glass in an insulated window, the airtight seal has probably been broken and the glass will need to be replaced.

Skylight Installation

Skylight Installation

Skylights are full of overhead options. Venting or non-venting, electrical, rain sensors, sun shades a natural wood interior or a drywall return. Energy efficient Low-E glass, superior weather-tightness and low-maintenance exteriors. Today’s skylights offer the latest technology to deliver weather tight performance for years.

Skylight Replacement Benefits Include:

  • Energy Efficiency
  • Optimal Daylight
  • Saves money
  • Ventilation
  • Privacy

How much difference does Quality Installation make?
Our installers have worked on every type of home: from condos, to single-family homes, to North Shore Mansions. When we install windows at your home, we will bring the same premium installation materials and professionals that we bring to every job. Our work will be top-quality on every job, big or small.

A few benefits of working with a dedicated, high-quality window company:

  • Your windows will be in great shape long after the install
  • You can be sure you are getting the best energy efficiency out of your windows
  • Our installers are dependable and clean; we arrive on time, and make the installation convenient
  • Service issues are taken care of quickly and reliably

Customer Reviews



"Replacing 17 windows and the patio door seemed like an insurmountable job to me. Your men worked carefully and diligently to see that the work was completely finished in a timely manner. Additionally, the quality of the work was excellent."


"Of all the contractors I've dealt with over the past 31 years, I can truly say I enjoyed our relationship the most. I could always count on outstanding work by you."


"Excellent work done with integrity."


" I have never had it so easy with a major contractor like I did with Conlon. What Jim says is what is going to happen no BS no nonsense, straight shooter. Over and above and beyond my expectations great people to work with the team of Jim and Michele is perfect, I can't say enough good things about them"


"I am the Maintenance Manager for the Hamlet East Condo, we just did a roof replacement with Conlon, I have never had it so easy with a major contractor like i did with Conlon. What Jim says is what is going to happen no BS no nonsense, straight shooter. Over and above and beyond my expectations great people to work with the team of Jim and Michele is perfect, I can't say enough good things about them, please feel free to call me or any Board member of my community and you will hear nothing but Praise about Conlon Roofing and exteriors"


"We could not be more satisfied with Jim and Conlon Exteriors, Inc. Were very impressed by the overall organization, efficiency and punctuality of the work despite the capricious and rainy weather in June of this year. Our leaky, large and complex roof was completely removed and replaced with a new shingle and EPDM layer (flat part) in just two days. The surroundings were left clean with no collateral damage. Would highly recommend Jim and Conlon Exteriors, Inc."


"The best roofing company you could ever hire! I am a single women who contractors try to take advantage of, Conlon Exteriors was just the opposite. The job was done perfect, not cutting any corners. The price was very fair. Don’t go with the cheapest contractor. What they promised is what I got and more. The workman were professional and their workmanship was fantastic. The owner Jim was at my house during the entire roofing job. He made sure everything was done right. I’d recommend Conlon Exteriors without reservation!"


"Everyone was very professional and they always answered all of our questions. Workers left the site clean when the job was completed. We would highly recommend this company."


"The Homeowner's Association has used Conlon Exteriors' services on a number of occasions, and has found their work to be efficient, effective, and of great quality. ... I have no hesitation in recommending the services of Conlon Exteriors, and the Association will certainly be calling on them again as the need arises."


"Jim Conlon does an excellent job for a very fair price. They tore off the old roof and put on the new one in a day and cleaned up so well that you would never know that they were there. I have used him in the past and have recommended him to all my neighbors, who also used him and were also very pleased. I can't say enough about the high quality of their work! I'm so glad I found him years ago! I will continue to use him for all my exterior needs!!"

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