Yes, if you have an integral j-channel on your new window, you can expect water to get behind the siding. The guy at the store might have been assuming that you have trim around your aluminum window, which would mean that your aluminum siding won't be long enough to reach the j-channel of the vinyl window.
How to remove j channel vinyl siding windows#
My thought is to replace windows first(bad seals, cant see through some of them, icy, sweats) then after all are replaced in few years replace the siding with vinyl.Īssuming that your aluminum window and your vinyl window are exactly the same size, then yes, your aluminum siding "should" fit inside the integral nailing flange. I cant afford 18 windows and siding right now. Residing in vinyl is not an option at this time. I thought if water gets behind the siding the thermoply is the water barrier? The current aluminum windows have no j channel and the aluminum siding is caulked as it buts up to the windows(looks like hell). My house has that Thermoply foil cardboard stuff under the aluminum siding.
Do I caulk the J-channel tops and sides to prevent water from getting behing the siding. My question is does the aluminum siding go in the window's built in J-channel? Home depot guy told to make j channel fillers with aztek plastic trim and caulk them? This makes no since to me. With the new construction windows I would use flashing tape on pan first then the top and side flanges after installing the window. I will be removing the aluminum siding and using new construction windows. Hello I am getting ready to replace 4 aluminum windows with vinyl windows.
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