About This Project:
Replacement Windows and Siding Installation
Chelmsford, MA
Basement windows are an often overlooked aspect of exterior remodeling. However, they make a big difference in a home’s energy savings and even security. With a need for new replacement windows in Chelmsford, MA, this homeowner decided to tackle the persistent issues caused by outdated and inefficient basement windows.
The existing windows had drafty aluminum frames and were sealed with DIY foam caulking—an attempt that fell short of providing any real insulation. Recognizing the need for a more effective solution, the homeowner called Coastal Windows & Exteriors as the trusted local window installers.
Replacement Windows in Chelmsford, MA: Our Installation Process
The primary goal of this project was to replace the ineffective aluminum windows with new, high-quality vinyl windows that meet the latest Energy Star 7.0 requirements. This upgrade was effective at eliminating drafts and enhancing the overall energy efficiency of the home.
Aluminum frames are inherently poor insulators, and the makeshift foam caulking did little to prevent cold air from penetrating during the harsh Massachusetts winters. This resulted in uncomfortable drafts and increased heating costs.
The installation process involved removing the old aluminum windows and preparing the openings for the new units. The new vinyl windows were chosen for their superior insulating properties and their ability to meet stringent Energy Star 7.0 standards, which ensure optimal energy efficiency.
Energy Savings with Quality Vinyl Window Replacement
These vinyl windows are specifically designed to reduce heat transfer, thanks to their durable frames and energy-efficient glass. Furthermore, their proper installation ensured a snug fit, eliminating gaps that previously allowed air leaks.

Energy Efficient Windows
Frequently Asked Questions About Replacement Windows in Gloucester, MA
What are the benefits of replacing old windows?
Replacing old windows with new, energy-efficient models can significantly reduce your energy bills by improving your home’s insulation. Moreover, these windows help maintain a consistent indoor temperature, reducing the strain on heating and cooling systems. Additionally, new windows enhance curb appeal by giving your home a cleaner, more updated look. They also increase property value, making them a smart investment for resale or long-term comfort. Furthermore, energy-efficient windows reduce outside noise, creating a quieter, more peaceful living space. Therefore, upgrading your windows improves comfort, efficiency, and overall home value.
How do I know if my windows need replacing?
Signs that your windows need replacing include noticeable drafts, difficulty opening or closing, and condensation between the panes. Moreover, rotting frames are a clear indicator that moisture has compromised the structure. Increasing energy bills may also suggest poor insulation from outdated or damaged windows. Additionally, if your windows are over 20 years old, it’s a good idea to consider an upgrade. Modern windows offer improved energy efficiency, better performance, and enhanced comfort. Therefore, replacing old windows helps reduce energy costs, prevent further damage, and improve your home’s overall appearance.
What types of replacement windows are available?
There are several styles of replacement windows to choose from, including double-hung, casement, sliding, awning, and picture windows. Each type offers different benefits in terms of ventilation, ease of use, and aesthetic appeal.
What makes a window energy efficient?
Energy-efficient windows typically feature double or triple-pane glass filled with inert gas like argon to reduce heat transfer. Additionally, low-E coatings reflect infrared light, helping keep your home warmer in winter and cooler in summer. Quality frame materials such as vinyl, fiberglass, or composite also provide strong insulation and long-term durability. Moreover, proper installation is essential to eliminate air leaks and maximize performance. Therefore, for the best results, always look for windows that meet or exceed the new Energy Star 7.0 ratings!
How long does it take to install replacement windows?
The installation time for replacement windows can vary depending on the number of windows and the type of installation. However, most professional installers can replace 10–15 windows in a single day under typical conditions. Moreover, factors like window size, style, accessibility, and weather can slightly affect the timeline. Additionally, experienced crews work efficiently to ensure each window is installed with a tight seal and proper alignment. Therefore, homeowners can expect a smooth process with minimal disruption and professional, long-lasting results.