Choosing the Right Fit: A Guide to the Different Types of Replacement Windows

Upgrade your home’s comfort, efficiency, and style with the right types of replacement windows

Thinking about replacing your windows? Whether you’re remodeling your forever home or refreshing a rental, new windows are one of the best upgrades you can make. But with so many types of replacement windows on the market, how do you know which one is right for your space?

At Builders Surplus, we’re here to help homeowners and contractors in Rhode Island, Connecticut, and Massachusetts find high-quality windows at a fraction of the cost you’d pay at the big-box stores. From casement to double-hung to specialty shapes, we break down the most popular replacement window types to help you make the smartest choice for your home.

Need help picking the perfect window? Call us at 866-739-1636 or visit our contact page to speak with one of our experts today.

Why Replace Your Windows?

Before diving into types, let’s talk about the why. Old or damaged windows can lead to:

  • Drafts and heat loss 
  • Increased energy bills 
  • Moisture buildup and condensation 
  • Poor curb appeal 
  • Hard-to-open frames or foggy panes 

New windows not only boost energy efficiency, but they also refresh the entire look of your home, inside and out.

The Main Types of Replacement Windows

When selecting replacement windows, it helps to know the basic styles and their advantages. Here are some popular styles:

1. Double-Hung Windows

Best for: Traditional homes, upper and lower ventilation

Double-hung windows are one of the most common styles. They feature two operable sashes that move up and down, allowing airflow from both the top and bottom. They’re easy to clean (especially tilt-in versions) and work well in nearly any room.

2. Single-Hung Windows

Best for: Budget-friendly replacement, minimal maintenance

Similar to double-hung, but only the bottom sash opens. This simple design is cost-effective and energy-efficient, with fewer moving parts. Ideal for rooms where ventilation needs are low.

3. Casement Windows

Best for: Maximum ventilation, hard-to-reach places (like above sinks)

Casement windows are hinged on one side and open outward like a door using a crank handle. They seal tightly when closed and are great for catching breezes. Perfect for modern homes and spaces where you want a clear view and full ventilation.

4. Sliding Windows

Best for: Wide openings, contemporary spaces

Sliding windows operate horizontally, making them an excellent option for wider wall spaces. They’re easy to open and provide great natural light. Because they don’t open outward, they’re ideal for patios or walkways.

5. Picture Windows

Best for: Uninterrupted views, natural light

Picture windows are large, fixed windows that don’t open. They’re designed to frame outdoor views and let in tons of light. While they don’t offer ventilation, they’re highly energy efficient and make a stunning visual impact.

6. Awning Windows

Best for: Bathrooms, basements, or rainy climates

Awning windows are hinged at the top and open outward from the bottom, forming a canopy effect. They allow ventilation even during light rain and work well in tight or higher wall spaces.

7. Bay and Bow Windows

Best for: Expanding space, adding architectural interest

Bay windows project outward from the home, typically with a central fixed window flanked by two angled operable windows. Bow windows use a series of windows in a gentle curve. Both add space, light, and curb appeal.

8. Specialty Windows

Best for: Unique shapes, custom aesthetics

Looking for a round, half-moon, or eyebrow window? Custom and specialty-shaped windows can match your home’s architecture or bring in more creative light.

Replacement vs. New Construction Windows: What’s the Difference?

A quick tip: Replacement windows are designed to fit into existing frames, while new construction windows include a nail fin for direct attachment to wall studs. 

Energy Efficiency and Materials Matter

Beyond style, energy efficiency should be a top priority. Look for:

  • Double or triple-pane glass for insulation 
  • Low-E coatings to reflect heat and UV rays 
  • Gas-filled panes for better thermal performance 

Material options include:

  • Vinyl – Low maintenance, affordable, and energy efficient 
  • Wood – Natural beauty, excellent insulation (requires more upkeep) 
  • Aluminum – Lightweight and durable, better suited for milder climates 

How to Measure for Replacement Windows

For a successful install, measuring correctly is crucial. You’ll need both the rough opening (the framed space in the wall) and the actual size of the window unit. 

Why Choose Builders Surplus?

You don’t need to sacrifice quality for savings. At Builders Surplus, we offer:

  • A wide selection of first-quality windows 
  • Substantial discounts every day—no gimmicks 
  • Local inventory that changes regularly 
  • A team of experts ready to help you choose and measure 

Whether you’re replacing one window or outfitting your entire home, we’ve got the right fit at the right price.

Start Your Window Replacement Today

Upgrading your home with new windows is one of the smartest decisions you can make for comfort, efficiency, and style. With so many types of replacement windows to choose from, let Builders Surplus be your go-to source for selection, support, and savings.

Visit our contact page or call us at 866-739-1636 to speak with a specialist. We’re here to help make your project a breeze!