How To Replace House Windows: Steps To Replace House Windows by Yourself

Are you considering replacing your house windows? If so, you’re in for a treat! Not only is this a rewarding DIY project, but it’s also relatively simple and straightforward. In this blog post, we’ll walk you through the entire process from start to finish so that you can replace your windows like a pro. By the time you’re done reading, you’ll know everything there is to know about how to replace house windows. So what are you waiting for? Let’s get started!

How to remove old windows

Removing your old windows is a crucial first step in replacing them with new ones. Luckily, it’s not a difficult process, and you can do it yourself with just a few tools. Here’s how:

First, start by removing any window treatments, such as curtains or blinds. Next, use a putty knife to loosen and remove any old caulk or sealant around the perimeter of the window. Then, use a screwdriver or drill to remove any nails or screws holding the window in place.

Finally, gently lift the window out of its frame. If it’s stuck, you may need to tap lightly on the frame with a rubber mallet to loosen it. Once the window is out, set it aside and repeat these steps for each remaining window in your home.

Window Replacement Parts

If your windows are starting to show their age, it may be time to replace them. Replacing windows can be a big project, but if you take the time to do your research and prepare ahead of time, it doesn’t have to be difficult.

There are a few different things you’ll need to consider when replacing your windows, including:

  • The type of window you want (e.g., double-hung, casement, etc.)
  • The size of the window
  • The material of the window (e.g., wood, vinyl, aluminium)
  • The finish of the window (e.g., painted, stained)
  • The glass type (e.g., clear, tinted, energy efficient)

Once you’ve decided on the specifics of your new windows, it’s time to gather the necessary supplies. For most window replacement projects, you’ll need:

  • A tape measure
  • A hammer or drill (depending on the installation method)
  • Screws or nails (again, depending on the installation method)
  • Caulking and weatherstripping
  • Putty knife – Glass cleaner

Measuring for Replacements

The first step in replacing your house windows is to take accurate measurements. You’ll need to measure the width and height of each window, as well as the distance between the window openings. Once you have your measurements, you can order your new windows from a local home improvement store or online retailer.

Take Out the Sash

To remove the sash from a window, you will need to take the following steps:

  • Locate the release mechanism for the window sash. This is typically a small lever or button that can be found on the side of the window frame.
  • Once you have found the release mechanism, push it in to release the sash from the frame. Some windows may have a latch or lock that needs to be unlocked before you can release the sash.
  • Once the sash is released, you should be able to lift it up and out of the frame. Some sashes may be heavy, so you may need to ask for help to lift them out.
  • Once the sash is removed, you can proceed with replacing the window. To install the new window, simply reverse the steps above and slide the sash back into the frame. Make sure to secure the sash in place with the release mechanism or latch.

It’s important to note that the specific steps for removing a sash may vary depending on the type of window you have. If you are unsure about how to remove the sash, it is best to consult the manufacturer’s instructions or seek the help of a professional.

Pry Off The Jamb Liners

To remove the jamb liners when replacing house windows, follow these steps:

  • Remove any screws or nails that are holding the jamb liners in place. Use a drill or screwdriver to remove the screws and a hammer or pry bar to remove the nails.
  • Carefully pry off the jamb liners from the frame using a pry bar or a flathead screwdriver. Be careful not to damage the frame or the liners as you remove them.
  • Once the liners are removed, you can begin installing the new windows.
  • If you are reusing the jamb liners, make sure to clean them and repair any damage before installing them.
  • When installing the new jamb liners, use screws or nails to secure them in place. Make sure they are properly aligned and tightened to ensure a secure fit.

Prep the Frame

You’ll need to prep the frame before you can install your new windows. First, remove any old caulk or sealant from around the perimeter of the window. Use a putty knife to scrape away any old caulk or sealant. Next, use a wire brush to remove any paint or other debris from the surface of the frame. Be sure to wear gloves and a dust mask while you work.

Once the frame is clean, apply a bead of caulk around the perimeter. This will help create a weather-tight seal when you install your new windows. Finally, use shims to level out the window in the opening. Make sure that the window is level before you proceed to the next step.

Remove the Old Sash Weights

  • Remove the old sash weights from the windows. You will need to use a pry bar to remove the weights from the window.
  • Once the weights are removed, you will need to remove the old window sash. Use a putty knife to remove the old window sash from the window frame.
  • Now that the old window sash is removed, you will need to remove the parting stop from the window frame. Use a putty knife to remove the parting stop from the window frame.
  • With the parting stop removed, you can now remove the bottom rail of the window sash. Use a putty knife to remove the bottom rail of the window sash.

Prep For Insulation

The first thing you need to do is prep for insulation. This means making sure that your walls are properly insulated so that heat doesn’t escape through the window frames. You can do this by adding new insulation to the wall or by sealing any gaps around the windows with caulk.

Once you’ve prepped for insulation, the next step is to measure the window opening. This will ensure that you get the right size window for your space. To do this, measure the width and height of the opening, then subtract 1/2 inch from each measurement. This will give you the rough dimensions of your new window.

Now that you know how to prep for insulation and how to measure the window opening, you’re ready to start replacing your house windows!

Spray in the Foam

If you’re looking for an easy way to replace your house windows, look no further than spray foam insulation. This product can be found at most hardware stores and home improvement centers, and it’s a great way to insulate your home without having to remove the old windows. Simply spray the foam into the space between the window frame and the wall, and it will expand to fill the gap.

Caulk the Opening

Once you’ve removed the old window, clean up the area around the opening. Then, caulk any gaps between the trim and the siding. This will help create a weather-tight seal when you install the new window.

Install the Window

Assuming you have the new window and it is the right size, installing it is not that difficult. I’ve already mentioned the steps to install it. Just follow these steps and you will have it in place in no time.

  • Measure the opening: Measure the width and height of the window opening to ensure that you have the correct size window.
  • Prepare the opening: Remove any old window frames or sashes, and make sure the opening is clean and smooth. If the opening is not square or the frame is not level, you may need to shim or adjust the frame to make it level.
  • Install the window: Place the window into the opening and secure it in place with nails or screws. Make sure the window is level and plumb, and use shims as needed to ensure a tight fit.
  • Install the trim: Add trim around the outside of the window to cover any gaps and give it a finished look.
  • Finish the installation: Caulk around the outside of the window to seal it and prevent drafts. If the window has a screen, install it now. Finally, test the window to make sure it opens and closes properly.

It’s important to follow the manufacturer’s instructions when installing a new window, as different types of windows may have different installation requirements. If you are not comfortable or experienced with this type of work, it may be best to hire a professional to install the window for you.

Joxan Williams
Home Maintenance Expert | joxanwilliams@gmail.com | Website

I'm a licensed home maintenance contractor with over a decade of experience, dedicated to preserving your home's value. My expertise includes roofing, gutter installation and repair, fencing, pool maintenance, deck and patio construction, plumbing, appliance repair, lawn care, painting, garage doors, windows, sump pumps, and steam heating systems.