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How to Install Replacement Vinyl Basement Windows

How to Install Replacement Vinyl Basement Windows

Is it time to update your basement windows, but you do not want to pay for installation? With a little bit of know-how and the right tools, you can certainly install them yourself. Read the following step-by-step guide from the experts on how to install replacement vinyl basement windows.

Of course, the first thing you will need to do is to order vinyl replacement windows for your basement. You can order them online or in-person from your local windows and doors company. They will be able to assist you in finding the most practical, stylish, and energy-efficient windows for your basement. 

How to Install Replacement Vinyl Basement Windows

Step 1: Remove the existing basement window and frame.

The first thing you need to do is to remove the window sash. Next, cut through the bottom of the frame starting from the inside using an angle grinder. Do the same on the top of the window frame. However, you can skip this step if the top flange has siding and sheathing. 

Going toward the center in an X shape, pry each side away from the metal frame. Once the top has been removed, cut the outermost section of the top flange out using a reciprocating saw.

Step 2: Prep the Window Opening

Carefully chisel away any remaining concrete on the top and bottom of the hollow sash stops using a pneumatic chisel, hammer, or masonry chisel. Once this area is clean of residue, use siloxane masonry sealer to coat generously the opening until it is completely saturated. Wipe away the excess sealer and allow the surface to completely dry before the next step.

Carefully place the new window on top of a 2×8 pressure-treated sill. If it has been properly cut, it should be a snug fit. Once it is in place, make a mark for the correct position. Secure the window sill into the opening using adhesive sealant and masonry screws. 

The sill will be secured in the opening with a combination of masonry screws and adhesive sealant. Once the pilot holes have been bored through the wood, you can switch to masonry bits for the concrete part. Follow this up by applying the sealant to the bottom to fasten the sill into place.

Step 3 – Make the Bucks

In the center of the opening, dry-fit the window. Next, on both sides, measure the gap. Taper the buck pieces if the opening is more than 1/4-inch and fasten to the mud sill. Subtracting 1/16-inch accounting for any sealant, cut the side buck pieces to match the gap between the concrete and the window itself. Fasten with trim head screws. Drive at a steep angle into the window sill and the mud sill.

Step 4 – Sealing And Stops

Cut stops from 5/4 cedar to seal against the front edge of the window. Fasten them to the mud sill and side back using screws. Apply sealant to the inside face and then carefully slide the window into place. Use a block plan if it fits too snugly to allow for some wiggle room. Place screws into the side buck pieces through the sides of the window using screws long enough to fit into the wood, making sure they will not stick out of the concrete area.

Step 5: Apply the Final Coat of Sealant

Around the interior side of the window on all four edges, add sealant. Also, apply it along the sides and across the top of the window exterior. Do not seal the window sill on the outside, as this will not allow for proper drainage. 

If you do not know how to install replacement vinyl basement windows or feel that you need assistance, contact the experts at WindowTech Windows and Doors. We can schedule a member of our team to help you professionally install any windows in your home. Call us today to get started on your window replacement project.

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