How To Build A Shed’S Outside Window Trim?

Installing a shed window is a simple task that requires careful attention to detail. First, press the window flanges against the shed and screw through them into the rough frame. Confirm the window is level and plumb. Install a piece of flashing tape over the window flange at the top of the window. Finally, install window casing trim.

Installing shed window trim, shed window flashing, and caulk is essential for a finished look. PVC is highly recommended for this process. Justin demonstrates every step in the process, including taking accurate measurements of windows, working with different molding profiles, cutting and fastening the trim together on a workbench, and installing the trim.

If using exterior trim boards, ensure they are securely attached around the window frame. Seal any gaps between the trim and the shed wall with caulk to maintain a seamless connection. Prep the exterior trim with exterior grade paint and use Dyna Grip construction adhesive and brad nails to attach the trim to the shed.

Tack the windows in place with screws before checking for level and permanently fasten them. If building your own windows, sizing them to fit between the posts of your shed is an option. Hold the window in place, insert screws or nails into the hinge openings, and add window trim to cover up the flashing.

After adding the trim and windows, fill in the nail holes and seams with paintable exterior caulk. For tips on applying caulk, refer to the video on shed framing plans.