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Basement Windows Replacement Archives - Capital Comfort Windows & Doors Ottawa | Replacement Windows & Doors

A Guide to Replacing Basement Windows

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A Guide to Replacing Basement Windows

An old basement window may cause difficulties of many kinds. It may harm your walls and your interior if it allows in moisture. And it may make your basement stuffy and warm if it’s no longer open smoothly.


Luckily, these problems are unnecessary. Follow our instructions for replacing a basement window and your basement will again be safe and waterproof.

Basement Window Replacement Tools and Equipment


  • Thick gloves
  • Tape measure
  • Pry bar
  • Reciprocating saw
  • Wooden shims
  • Spirit level
  • Utility knife
  • Hammer
  • Cold chisel
  • Broom or vacuum cleaner
  • Drill – if you install the window in a solid wall, you will need one with a hammer action
  • Innovative steel or galvanized tubes – you need twin-threaded concrete screws if the wall is concrete
  • Exterior caulk and caulk gun
  • Spray 
  • Outdoor primary application
  • Paintbrush

Steps to Replacing Your Basement Window | Capital Comfort Windows

Steps to Replacing Your Basement Window

      Step 1: Your New Window Measure

Before you create your new one, don’t start pulling out your old window yet. It may take several weeks for new windows to arrive. Until they do, you do not want to find yourself with an uneasy and chilly gap in your wall.

See whether the frame has to be removed or not. If it is just broken glass, the frame may be replaced. Measure the height and width of the glass in such an instance. But you will have to pull it out if the frame has rotted, twisted or rusted. Measure the height of the frame and its width.

  1. Remove the Old Window

Let’s get rid of that old window now. Place on a pair of thick gloves before you start working to protect your hands.

You can accomplish this step using a pry bar if it is a wooden framed window. Remove the frame from the wall and sash. Then take the reciprocal saw, and use it to trim the frame from the wall stubble. You may remove the window now.

The procedure will be a little different if you deal with a metal-framed window on a concrete wall. See whether the rivets have been squeezed or fastened in place. These are available through the use of a boiler or electric screwdriver, and boil it off if rivets are used. The frame, free from the recess, will now be pulled.

Step 3: Hole Cleanup

Look for any concrete ridges where the window goes. For example, when the concrete has been poured after installing the original window, you will have to remove the ridge. Take and hammer out your chisel.

Remove any waste now, whether you sweep it with a broom or use a suction cleaner. Your new window is now ready to be installed.

Step 4: Install Your New Window

Put your new window in the hole. You want it to be near to the base, but leave a little isolation gap. Push a few wooden shims below the base of the frame to accomplish this. You don’t have to go outdoors all the way, and you simply have a little more space to offer.

Use your best estimate to examine the horizontal nature of the window. If not, change the shim position until it is.

Step 5: Window Screw Square

To hold your window, you may depend on the expansion foam. However, it always remains secure by screwing it in. Remove the screen from the window and sash. This gives you more space to work and facilitates access to the screw holes.

Use stainless steel or galvanized screws if you have a wooden frame and drywall. You will need the force of a drill with hammerhead action if you have a concrete wall. Use it to create your hole and screw it into twin threaded concrete screws.

Some windows are fastened to your screws; put them in place immediately if you have them.

Step 6: Foam Expansion

Make sure that your foam expansion may be used with doors and windows. You want the kind marked “low growth.” High expansion foam expands more, as the name says. It places a lot of pressure on the window. As a consequence, it is hard to open, and the window may even bend.

Give it a vigorous shake to combine the materials in a vertical posture. Then apply it to the space between the frame and the walls equally through the pin. To get to the front of the window, you do not need the foam, and the objective is to isolate the crystal.

Close your window and lock it while you wait for it to dry.

Step 7: Replace the Outside of the Window with Caulk

Now it’s time to go outdoors when the new window is in position. Take your knife, caulk and caulk gun.

Control the suitability of your caulk for outside usage. You also have to attach your wood and metal window frame to the brick or stone wall. Check whether the temperatures to which it is exposed are tolerable. You will need a specialized product if you are in a region with extremely cold winters.

Now cut the cap of the caulk container into pieces. Cut on the nozzle where the appropriate bead of caulk is going to be given. Cut on an angle to simplify the application. Puncture the seal into your caulk bottle and put it in your caulk gun.

Apply the pin to the bottom of the window and gently slide it down to the bottom border. Then use the top of the window and along the sides.

Step 8: Completing the Task

Your job here is done if your window has a metal frame. However, you must use wood to protect it from the weather if it is constructed of wood.

Ensure that your primer is appropriate for outdoor usage. Use your paintbrush to apply it in a thin uniform layer, and let it dry as long as the tin recommends. You may leave it how it is when your primer is dry. Alternatively, a couple of external paint applications offer additional frame protection.

For more information on replacing basement windows in the Ottawa region, visit Capital Comfort Doors and Windows online or call us at (613) 317-3922.

Looking for new or replacement windows or doors in the Ottawa or Eastern Ontario area? Call us today for a free estimate.