J-channel used in conjunction with siding is placed where the siding meets doorways and windows. It is also used to cover cut pieces of siding under windows and at eaves. You may want to remove the J-channel to install different windows or doors or to remove the siding and use it on a different house. Removing the J-channel without damaging the siding requires the proper tools and weather conditions.
Things You'll Need
Locate the area where you want to remove the J-channel. Figure out which pieces of siding you will need to remove to get to the J-channel you are removing.
Hook a zip tool into the locking or butt edge of the piece of siding above where the J-channel is you are removing. If the siding is tight, this may be more difficult. Look for a loose spot in the siding to slide the zip tool into.
Pull down on the siding once you have the zip tool in place. Move the zip tool along the entire length of the siding strip. This will expose the nailing hem underneath the siding strip.
Wedge a flat bar between the nail heads and the siding. Carefully remove the nails.
Slide the siding strip down to completely remove it. Set it aside for reinstallation later.
Remove the nails that hold the J-channel in place. If necessary, remove the nails that hold the under sill trim in place as well.
Do not try to remove siding when temperatures are below 50 degrees Fahrenheit. Siding is brittle and easily breakable when it is cold.