Cutting Siding For Window Trim

Check the fit then cut.

Cutting siding for window trim.

It s normally a cost cutting measure when done at the corners they don t have to be careful or precise about the corner cut etc. When installing window molding start at the top. How to install window trim mark the length. Measure the distance from the inside top of the j channel to the locking tab of the course below and subtract 1 4.

Exterior trim over siding i have never seen it on window door trim but seen plenty on door window trim. The windows would be more work imo. See diagram 2e 4a. Make the line as dark as possible so it s visible when you re cutting it.

Use a carpenter s square to draw the line straight. Do not miter corner joints of band boards fascia corner trim etc. Make sure that a drip cap is installed first over the window before going for the hardie siding. 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.

Provide increased spacing along the trim if specified by the siding application instructions. Place the piece of siding to be installed under the window along the bottom edge and hold it where it will be located. Gap for every 18 ft. You will see the trims lay nice and flat.

Cut a 45 degree angle on one end of the trim and hold. If you re installing trim in temps higher than 80 degrees f cut pieces to fit tightly. Instruction on how to install exterior 2x4 trim around a new or old window. Get the spacing right.

After installation cover the gap with acrylic or urethane caulk. Face nail trims using 2 inch 16 gauge finish nails after every 16 inches apart. If you re cutting dark vinyl siding use chalk or light colored tape to mark the line you want to cut. 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.

Lock the notched. Cutting and installing the siding 1. Place the top piece and hold the trim 3 16 in. Below 60 degrees leave a 1 8 in.

Cut away the extra siding. If it s between 60 and 80 degrees leave a 1 16 in.