Knowing how to install the new windows replacement window yourself can save you from the expense of having to outsource it to a professional contractor. You’ll also likely get what you want out of the install since you are the one doing the job. Find out how to install a window here.
Installing a replacement window doesn’t have to be difficult. Need some motivation to get started? Consider that the average cost of a window replacement in Florida is between $300-$600. If you have a few windows you’d like to replace and install at once, the cost can be substantial.
Let’s dive into how to install the new windows replacement window within your home. Just follow these steps from start to finish to make your new windows install a success.
STEP ONE: Plan to install the new windows your replacement into your existing window opening. Your first step is to determine the width measurement of the new window you plan on installing into your existing window opening. Measure from one side of the window to the other, jamb to jamb. Take three measurements of the width, one at the top, one at the bottom and one in the middle of the opening. If all three measurements are the same, that is the size of the new window you want to order. If all three measurements are not the same, use the smaller number for the size of the new window you will be ordering as a replacement.
STEP TWO: Measure the height. Take your measurement from the highest point of the window sill. Do this while holding your tape measure against the back of the window stool. Make sure your tape measure is straight while you’re measuring from up to down, to ensure an accurate and true measurement. Take two measurements for the height; the height from the left side of the window opening and measure the height from the left side. They should be the same.
STEP THREE: Check to install the new windows opening to see if it is out of square. Using your tape measure, hold it diagonally from the bottom right-hand corner of the window opening to the top left-hand corner and take a measurement. Do the same thing from the bottom left-hand corner to the top right-hand corner. If both diagonal measurements are equal, you know that the window is not out of square. Now you’re ready to order a new window.
STEP FOUR: At your local hardware store, order the replacement window to the exact measurements you took for the width and height, in steps one and two.
STEP FIVE: Remove the old sash. With a utility knife, score the existing paint all the way around the perimeter where the window stop bead meets the window trim. Using a stiff putty knife, putting it between the window stop and the window trim, remove the window stop and save it. You’ll need the existing window stop when you put the new window back in. Next, remove the parting bead right up at the top of each window to be replaced. Pull it right out of its socket with a pair of metal pliers. Next, put your putty knife behind the window jamb liner at the right and left sides of the old window and pull it out, usually a matter of pulling the staples right out of their sockets. Now, with the window down, you will be able to grab the entire window sash and pull it right out. If you also have storm windows screwed to the frame, unscrew them and remove them.
STEP SIX: Remove the old paint off the four edges, so when you put the new window in you will have a nice tight fit. Once the old window edges are cleaned up you can run a beaded caulking right around the perimeter. Next, run two more lines of caulking beads across the window sill, so when you set the window inside, it will make a nice seal that is tight.
STEP SEVEN: Lift the new window into the window opening by grabbing it (two people works better) on both sides, putting the bottom part of the new window into the window opening first. Once the bottom part of the new window is placed into the opening (before you set the window in entirely), check the amount of spacing on either side (right and left) so that the new window is centered. Next, you can push the rest of the window into the opening so that it fits tightly against the surrounding caulking on all four sides. The still-wet caulking is setting into place along with the new window. The window manufacturer should supply plastic shims that help hold the window into the opening. First, install the screw through the new window into the window jamb and slide the shims over the screw. Then tighten the screw for each plastic shim so that the window is holding firmly into place.
STEP EIGHT: Make sure install the new windows is square. To do this you have to make sure that the diagonal measurements match (this is described in step three). If both measurements are not exactly the same move the window over to make install the new windows square. After you’ve moved the window over, pushing it with a chisel inserted on the side of the window at the bottom left or right, check your diagonal measurements again until both numbers are the same. When they are the same, you know your new window is square.
STEP NINE: Make sure the window isn’t installed bowed or curved. To check this take a measurement from side to side (horizontally). Take 3 height measurements, one number at the bottom, one in the center, and one up top. If all 3 measurements are equal, Install the new windows install isn’t bowed. If they are not perfectly equal, you can use a chisel and then screw in a manufacturer’s plastic shim to the side of the new window in order to shorten one of the measurements and equal things out so the window isn’t bowed.
STEP TEN: Seal the perimeter of install the new windows with some caulking and reinstall the window stop bead with a hammer. Do this on the exterior perimeter of the window as well as on the interior. Use a wet paper towel to smooth out the damp caulking around the new window. And you are done! Your new window is installed perfectly.