I finished the coffered ceiling in this room and the windows just felt so bare, it was time to trim them out. With clean lines and timeless charm, Craftsman-style window casing adds architectural interest and instantly makes your home feel more custom. The best part? You can create this look using just a few basic boards: 1x4s, 1x6s, and 1x2s.
Whether you’re updating one window or giving your whole home a trim refresh, this project is beginner-friendly and totally doable in a weekend. Let’s break it down step by step!
Get Started on Your Easy Craftsman Trim
Start by measuring your window to determine the length of each piece. You’ll need two vertical 1x4s for the side casings, a 1×6 for the sill, another 1×6 for the apron (the piece just below the sill), a 1×6 for the head casing across the top, and finally, a 1×2 to sit flat along the very top as a decorative cap. Begin by installing the sill—cut your 1×6 so that it extends 1–1.5 inches beyond the vertical trim pieces on either side. Attach it securely and make sure it sits level, as everything else will build off of it.
Next, install the side casings by cutting two 1x4s to run from the top of the sill to just above the window. Nail them in place using a level to keep everything straight. Then attach the apron—a horizontal 1×6—directly underneath the sill, aligning it with the outer edges of the side trim. Now you’re ready for the top. Cut a 1×6 to serve as the head casing, letting it overhang slightly beyond the side trim for a more finished look. Finally, place a 1×2 flat on top of the 1×6 to serve as a cap, again allowing for a small overhang on each end to complete that classic Craftsman profile.
Once everything is installed, fill the nail holes with wood filler and caulk any gaps for a seamless finish. Lightly sand all surfaces to prep for paint or stain. A crisp white paint gives it a clean, traditional look, while a rich wood stain adds warmth and character. Either way, this easy trim project turns plain windows into beautiful focal points that feel both polished and timeless.
Easiest Window Trim Ever
Craftsman-style window trim is a satisfying weekend project that adds major visual appeal without a major cost. With just a few boards and some basic tools, you can create a high-impact, designer-worthy detail that looks like it’s always been there. I mean, just check out the playroom!
