How To Install Trim Around Windows And Doors

When you know how to install window trim you can elevate your carpentry projects and achieve pro quality results.

How to install trim around windows and doors.

The first few times you install casing we suggest drawing light lines called reveal lines 3 16 in. Installing j channel around windows can be a difficult part of the installation process. Instruction on how to install exterior 2x4 trim around a new or old window. Here s how they do it.

If you have vinyl or metal flanged windows for instance you can install drip cap flashing 4 the home depot over the window itself or over the top trim piece that you install. Researching the proper steps for installing j channel. Cut a 45 degree angle on one end of the trim and hold it so the short end of the angle. Before you cut start installing by marking out the reveal the gap between the trim and the edge of the door jamb or door frame which is typically 1 8 inch.

Start with the casing around the doors and windows. Align one end with the reveal mark and then tack it in place to the door jamb or window surround. This video shows the installation of siding j channel around doors and windows. Nail up all the header pieces beginning with your 18 gauge brad nailer using 1 1 4 inch brads.

The type and location of the flashings will vary depending on the type of windows and doors. It s all done by eye with a sharp pencil a miter saw and an 18 gauge nailer. When installing window molding start at the top. Most trim carpenters don t even use a tape to trim windows.

With experience you ll skip this step and simply eyeball the reveal when you put up the trim. Watch this video for step by step instruct. For a consistent look match the interior trim around your door to the style of the room. From the edge of the jamb to align the casing to the door jamb and windows photo 1.