1. Business

How to Choose and Install a Replacement Window

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A replacement window is an excellent way to improve the energy efficiency and aesthetic appeal of your home. However, it's important to make a well-informed decision when buying a new window and arranging for its installation.

When choosing a Warren Window replacement window, consider its performance, ease of maintenance, and warranty. This will help you choose the right type of windows and contractors for your needs.

Replacement vs. New Construction

Replacement windows are the perfect choice for homeowners who want to update their existing home with new windows. They’re a cost-effective option that don’t require any construction on the property.

They’re also easier to install than their new construction counterparts. Since they’re made to fit into existing openings, there’s no need for extra work to open up and repair trim work, drywall and siding.

New construction windows, on the other hand, are designed for new buildings and installed when the studs are still exposed. They come with a nail fin, which is a flange that secures the window to the studs before the frame and sheathing are added.

New construction windows are recommended for new building projects and major remodeling. However, they’re not a good choice for a small renovation using an existing window opening. Moreover, installing new construction windows in old houses takes more effort and is more expensive.

Types of Replacement Windows

When it comes time to replace your windows, you’ll find several options available. They range from standard styles that are common for most homes to custom windows crafted from dimensions you or a professional measure in your home.

Window frames come in a variety of materials, including wood, aluminum, vinyl, and fiberglass. Each has its own benefits and drawbacks.

One of the most cost-effective types of window frame is vinyl. It’s easy to clean and maintain, and it often comes in a wide range of exterior colors.

Another option is wood-clad frames, which combine the natural beauty of solid wood with an outer layer made of aluminum or vinyl. They’re also more durable than composite frames and offer good insulation.

Energy Efficiency

If you’re a homeowner with old, single pane windows or rotted wood frames, replacing these older window units with ENERGY STAR-certified windows and new frames can significantly lower your energy bills. However, the amount of savings you’ll see depends on your home and climate zone.

Choosing the right replacement window for your climate, including the type of material used to make it (wood, vinyl, composite – Fibrex(r) material – or fiberglass), is crucial for maximum efficiency. Look for the NFRC rating or an Energy Star label to find the most effective products for your region.

Energy efficient windows can reduce a home’s heating and cooling costs, improve indoor comfort and increase its value. They also save thousands of pounds of CO2 emissions from entering the atmosphere, which helps lower your carbon footprint and protect the environment.


When replacing windows, proper installation is essential. A poor installation can wreak havoc on your home’s energy efficiency, performance and longevity.

Before you purchase a new window, take the time to learn about the different installation options, types and process. This can save you time, money and frustration.

The first step in the window replacement process is to remove the old windows. Typically, this will require removing flashing, trim and brick molding (Images 1 & 2).

Next, cut the sash cords to free the sashes. Open the counterweight doors, and remove the weights, cords and pulleys (Images 3 & 4).

The new window must be installed with correct technical measurements. Measure the width of the window and the height from the bottom jamb to the top jamb at three spots: one on each side, and both horizontally and vertically. If these measurements are within 1/4-inch, the window is square and ready for installation. This will help the window fit and seal properly, saving you money in the long run.



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