b'Nailing Fin Frame-Out- AlternateIf a Fin-Mounted Window has the fin covered with J-Channel and siding, the siding can be cut back to expose the nailing fin making the oldwindow easy to remove. Once the new window is installed and flashed, exterior trim molding can be applied as shown on previous page.Step 1: Step 3:A very common window Removed the sidinginstallation of an old carefully nails carefullyfinned window has the from and make adjust-mounting fin covered by ments as necessary toJ Channels and drip expose the completecap and has thefin.siding butting up to the J Channel. Try to disrupt oldflashing as little aspossible.Remove all the sidingpieces from around thewindow as cleanly aspossible- trying to preserve any flashing.The cleaner the cutaway, the easierand better the finishedreplacement will be. Step 2: Step 4:Cut-back the siding Removed the nailswith circular saw or carefully from the oldOscillating Toolwindows fin.sufficient width(approximately 1/2to 2) to expose theold windows mounting fin.Take care not to cuttoo deep.Re-flash the exposed mounting surface using adhesive-backed flashing or liquid flashing. Cut a new drip cap to tuck under the siding after the new window is installed. Window Fitters Guide to Window Installation422020 AWDI, LLC Do not reproduce without permission'