Why It’s Time to Replace The Windows in Your Nantucket Home

As a local contractor here on Nantucket, I often hear from homeowners frustrated by drafty rooms and high energy bills. Living on an island means battling more than just salty air. We’re up against strong winds, harsh winters, and fluctuating temperatures. One of the most effective upgrades you can make to your home is replacing outdated windows. Here’s why now is the perfect time.

1. Combat Heat Loss and Save on Energy Bills

Old, single-pane windows or poorly installed units are one of the biggest sources of energy loss in a home, accounting for up to 30% of residential heating and cooling energy use, according to the U.S. Department of Energy.

In a place like Nantucket, where winter winds blow strong off the Atlantic and temperatures dip well below freezing, that’s a major issue. You may not realize it, but every small draft and poorly sealed seam lets warm air escape and cold air rush in, making your heating system work overtime.

Modern energy-efficient windows use multiple panes of glass, gas fills like argon or krypton, and Low-E (low emissivity) coatings to dramatically reduce heat transfer. These materials act like insulation for your windows, keeping warm air inside during winter and blocking out heat in the summer. 

Drafty windows create cold spots in your home, even if your thermostat is turned up. A poorly sealed window can turn an otherwise cozy room into an uncomfortable space. Replacing those old units with properly installed, insulated windows creates a tighter building envelope, leading to consistent temperatures, a noticeable increase in comfort, and lower monthly energy bills.

2. Nantucket’s Salt Air Is Hard on Windows

Salt in the air doesn’t just rust your car, it also wears down your window frames, seals, and hardware over time. Aluminum and wood frames are particularly vulnerable, leading to swelling, corrosion, and eventual failure. Today’s windows designed for coastal climates come with weather-resistant frames made from fiberglass, vinyl, or composite materials, and use stainless steel hardware to resist corrosion.

3. Protect Your Interior from UV Damage

Old windows often lack UV protection, which means your furniture, flooring, and artwork may be fading faster than you realize. Modern windows come with Low-E glass coatings that block harmful ultraviolet rays while still letting in natural light.

4. Protect Your Investment and Increase Curb Appeal

New windows improve not only your comfort but also your home’s resale value. They give your home a fresh, clean look that improves curb appeal and reduces long-term maintenance costs.

Over the years, windows can be replaced one at a time, leading to a mismatched look. Replacing all windows at once restores symmetry and cohesion.

Today’s windows come in a variety of finishes, grid patterns, and hardware options that can complement traditional Nantucket aesthetics,from colonial-style grilles to sleek modern frames.

5. Prevent Moisture Damage and Mold

Heat loss isn’t the only issue. Older windows often let moisture in as well. That can lead to rotting wood, mold growth, and even damage to insulation and drywall. Energy-efficient windows with quality seals help prevent condensation and water intrusion, which is especially important on an island where weather can change fast.

Let’s Talk Windows

If your home is drafty, your energy bills are rising, or you just want to improve comfort and appearance, replacing your windows is a smart investment. As a Nantucket-based contractor, J. Martinson Builders will guide you through selecting the right materials and ensure a high-quality, weather-resistant installation that holds up against our island’s unique conditions.

Get in touch today for a free consultation.