Cutting Siding For Window Trim

Gap for every 18 ft.

Cutting siding for window trim.

Using a circular saw set to the right depth just a hair shallower than our siding to ensure we didn t break through the house wrap or wall and a brace to ensure a straight cut we cut away the extra siding from around our window frame. Cut away the extra siding. Provide increased spacing along the trim if specified by the siding application instructions. Exterior trim over siding i have never seen it on window door trim but seen plenty on door window trim.

Do not miter corner joints of band boards fascia corner trim etc. Cutting and installing the siding 1. Lock the notched. Place the piece of siding to be installed under the window along the bottom edge and hold it where it will be located.

Get the spacing right. You will see the trims lay nice and flat. Cut a 45 degree angle on one end of the trim and hold. Face nail trims using 2 inch 16 gauge finish nails after every 16 inches apart.

Where edges of trim meet siding material windows doors or other finished openings leave a minimum 3 16 inch 5 mm space to allow for proper sealing. Mark the line you want to cut on the siding with a pencil. Check the fit then cut. Make sure that a drip cap is installed first over the window before going for the hardie siding.

If it s between 60 and 80 degrees leave a 1 16 in. Below 60 degrees leave a 1 8 in. Make the line as dark as possible so it s visible when you re cutting it. If you re cutting dark vinyl siding use chalk or light colored tape to mark the line you want to cut.

Use a carpenter s square to draw the line straight. Instruction on how to install exterior 2x4 trim around a new or old window. If you re installing trim in temps higher than 80 degrees f cut pieces to fit tightly. Touch up the divided hardie trim boards before trimming them to your window.

See diagram 2e 4a. Measure the distance from the inside top of the j channel to the locking tab of the course below and subtract 1 4. After installation cover the gap with acrylic or urethane caulk. How to install window trim mark the length.

Away from the jamb at both ends and along the base. Place the top piece and hold the trim 3 16 in.