Converting A Window To A Box Bay Window

Converting a standard window into a box bay window is a simple process, allowing you to convert a plain facade into an attractive architectural feature. Half of the construction that you need is already in place since you will be using an existing window rather than creating your box bay window from scratch. Check the weather to make sure that you won't have to deal with rain in case you can't finish the entire project in a single day. Here is the process:

Step 1: Remove Old Nails

First and foremost, remove any old nails from the window frame you intend on altering using a pry bar. You are also going to need to remove other fasteners or staples that are keeping the window in its place.

Step 2: Remove Window Frame

Now you are going to want to remove the old frame completely from its window, which should be fairly easy now that the nails have been removed.

Step 3: Cut Plywood

Cut the plywood pieces to the right size and shape according to your window frame. Make sure that the measurements are taken carefully, and allow for extra space in case you make a mistake.

Step 4: Apply Silicone

Apply a heavy silicone bead over the frame edge, which will be your plywood attachment point.

Step 5: Attach Plywood

Now you can attach your plywood to the frame of the window using a screw gun and screws. The silicone will serve as both glue as well as a seal for waterproofing. For the most secure attachment possible, insert a screw every few inches .

Step 6: Apply Silicone and Screws

Apply more silicone all around the original frame, taking care not to drip it anywhere else. Screw the box inside of the house frame using stainless steel screws and make sure to apply a screw at every 12 inches on the sides, top and bottom.

Step 7: Cut Decorative Molding

Now you should cut your chosen decorative molding to fit the edges where the plywood and the house connect. Measure twice, cut once when it comes to your decorative molding. Make angled cuts so that the molding will fit together properly when you trim your window box.

Step 8: Install Molding

Now that the molding is cut, you can install it by lining it up along the box and the house, using silicone and stainless-steel screws to hold everything in place. Then you can install the corner molding as well by cutting it to size and then applying silicone and screws to keep everything in place.

Step 9: Finishing Touches

Now you can finish up by painting or staining your brand new box bay window. You are going to want to paint the inside of the window so that it matches the rest of your home for the best results.