More Comfort
Reduce drafts and enjoy more even temperatures throughout your home.
Fix cracked, loose, warped, or storm-damaged siding with expert siding repair in Long Island, NY that protects your home and curb appeal.
Window replacement that Transforms your home.
If your windows feel drafty, stick when you open them, or make your rooms too hot in summer and too cold in winter, window replacement may be the right next step. On Long Island, homes deal with heavy wind, humid air, winter cold, and fast weather changes that can wear down older windows over time. Once seals weaken or frames start to fail, comfort drops and energy costs often rise. For many homeowners in Nassau and Suffolk County, replacing outdated windows is not just about looks. It is a smart home improvement that can support energy efficiency, improve curb appeal, and help the home feel more comfortable every day.
EXCELLENT Based on 9 reviews Posted on Bernard CollettiTrustindex verifies that the original source of the review is Google. Can't say enough about this company. From beginning to end they assisted me with my remodeling. They were extremely transparent with pricing and showed me every detail of what they were doing as they were doing it. They gave me options and didn't force me into making a decision. They came with an elite team and got right down to business I was really impressed on how clean they were and how proficient they were in the details. I would recommend them to anybody looking to renovate.Posted on Humberto KibelTrustindex verifies that the original source of the review is Google. I recently had the pleasure of working with this roofing and window company, and I couldn’t be more impressed with the entire experience. From the initial consultation to the final installation, their professionalism, attention to detail, and commitment to quality truly stood out. The team was punctual, respectful, and extremely knowledgeable. They took the time to explain all my options clearly, helping me choose the best materials for both my roof and windows without any pressure. What really set them apart was their communication. They kept me informed throughout the entire process, answered all my questions promptly, and made sure I was completely satisfied every step of the way. My home looks amazing again! Thanks Tom for making it an easy choice to go with your team.Posted on Kelly GellerTrustindex verifies that the original source of the review is Google. outstanding work. They were extremely attentive and on time and the roof came out amazingPosted on Michael GellerTrustindex verifies that the original source of the review is Google. Fantastic work done on my roof. Looks amazing and could not be happier!Posted on Michael FriedmannTrustindex verifies that the original source of the review is Google. I highly recommend Jagg Roofing and Siding to anyone looking for top-quality work and a smooth, stress-free experience. From the initial consultation to the final walkthrough, everything was handled with professionalism and attention to detail. Tom, the project planner, was exceptional throughout the entire process. He took the time to explain every step, made sure all my questions were answered, and kept everything organized and on schedule. His communication and expertise really stood out, and you can tell he genuinely cares about delivering the best results. The crew did an outstanding job—efficient, clean, and clearly skilled at what they do. The finished work looks amazing, and the quality is something you can see right away. If you want a company that’s reliable, honest, and delivers excellent results, Jagg Roofing and Siding is the way to go. I wouldn’t hesitate to use them again.Posted on D BTrustindex verifies that the original source of the review is Google. JAGG was an absolute pleasure to work with. I actually found them on Instagram and decided to reach out for a quote. After doing my due diligence and getting a second estimate from another company, it became clear that JAGG was the right choice. From our first meeting, their professionalism and experience really stood out. Jacob and his team did a fantastic job from start to finish, and I couldn’t be happier with the results. I highly recommend JAGG to anyone looking for quality work and a professional, reliable team.Posted on James MilesTrustindex verifies that the original source of the review is Google. JAGG Roofing, Siding and Windows did an outstanding job from start to finish. Jacob was very easy to work with. Professional, responsive, and genuinely helpful throughout the entire process. He took the time to explain everything clearly, answered all of my questions, and made sure I felt comfortable every step of the way. The quality of the work speaks for itself. The crew was punctual, respectful, and kept the area clean. Everything was completed on time and exceeded my expectations. If you’re looking for a reliable and honest company, I highly recommend JAGG Roofing, Siding and Windows. Ask for Jacob, you’ll be in good hands!
Complete Window Solutions.
Window replacement improves comfort, energy efficiency, and curb appeal. New windows help reduce drafts, and lower energy bill.
Custom window options allow you to choose the style, size, color, and design that best fits your home.
Professional installation ensures your new windows fit properly, perform efficiently, and last for years.
Window replacement matters more on Long Island than many homeowners realize because local weather puts constant stress on exterior materials. Cold winter air can leak in through worn frames, while summer heat and humidity can push indoor temperatures higher than they should be. In coastal and near-coastal areas, moisture and wind can also shorten the life of older windows and trim. Once that process starts, rooms may feel uneven, HVAC systems may run longer, and monthly energy costs may creep up. Replacing old units with properly installed replacement windows helps create a tighter home envelope, which improves comfort, reduces waste, and supports better long-term performance.
Long Island homeowners also replace windows because older units often drag down the appearance and function of the whole house. New double hung windows, casement windows, or a Custom window layout can brighten rooms, improve ventilation, and sharpen curb appeal from the street. This matters even more when windows are part of a larger exterior project involving Vinyl Siding, attic ventilation, or gutter guard upgrades. When these systems work together, the home usually performs better and looks more finished. That is why window replacement is often seen as a full home improvement move rather than a simple swap of glass and frames. It improves daily living while also supporting the home’s overall value.
Most failing windows show clear warning signs before they stop working altogether. Drafts near the sash, condensation between panes, rising energy costs, outside noise that seems too loud, and windows that stick or no longer lock smoothly are all common signs of aging units. These problems usually mean the seal, frame, or moving parts are no longer doing their job. Once that happens, outside air gets in more easily and your heating or cooling system has to work harder. For homeowners, that can mean less comfort in the rooms they use most and higher utility bills without any real improvement in indoor comfort.
Some homes also show more subtle signs that point toward replacement. Furniture near the glass may fade faster from sun exposure, certain rooms may stay colder than others, and moisture near the window opening can lead to trim damage or other small interior issues. If you are already updating a side door, Rear door, front entry door, or Sliding glass door, it often makes sense to look at the windows at the same time. Replacing one part of the exterior while leaving older failing windows in place can limit the overall benefit of the project. A coordinated upgrade usually gives homeowners better performance and a more polished result.
Reduce drafts and enjoy more even temperatures throughout your home.
Lower energy bills with advanced insulated glass technology.
New windows bring new life to your entire home's exterior.
From roof repairs and full roof replacements to siding upgrades and new window installations, JAGG Roofing, Siding and Windows proudly serves homeowners, business owners, property managers, and commercial properties across Long Island. Browse your area below to explore the roofing, siding, and window services available near you. If you do not see your town listed, contact us to confirm nearby service availability.
We serve towns and hamlets across Suffolk County with reliable roofing, siding and window services built for Long Island changing weather conditions.
From established suburban neighborhoods to coastal communities, JAGG helps Nassau County residenets protext and imporve their properties.
New windows improve comfort because they are designed to slow heat transfer between the inside of the home and the outdoor air. That means less heat loss in winter and less heat gain during warmer months. According to ENERGY STAR, replacing old single-pane windows with ENERGY STAR certified windows can lower household energy bills by an average of up to 13 percent nationwide. For Long Island homeowners, that can translate into a more even indoor temperature, fewer drafts, and less strain on heating and cooling equipment. The result is not just lower energy use. It is a home that feels more stable and comfortable through every season.
It is important to choose products based on verified performance, not just appearance. The National Fenestration Rating Council explains that NFRC labels give homeowners a reliable way to compare a window’s energy properties, including measurements tied to insulation and solar heat performance. That is why many homeowners look for Energy Star Certified and NFRC Rated products when planning a window replacement project. Features like insulated windows, Argon Gas between panes, and strong frame construction can all support better results. When those features are matched with proper installation, homeowners often notice quieter rooms, better indoor comfort, and more control over energy costs throughout the year.
For homeowners comparing options in Nassau and Suffolk County, JAGG Roofing, Siding & Windows presents itself as a family-owned, licensed, and insured Long Island contractor with dedicated project management and exterior services built around local homes and weather conditions. That broader experience can be helpful when window replacement overlaps with siding, trim, or other exterior concerns. It also gives homeowners one point of contact for design consultation, scheduling, and follow-through. When the process is handled well, new replacement windows can improve comfort, energy efficiency, appearance, and peace of mind for years. That is what makes window replacement a meaningful upgrade instead of just another maintenance task.