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Installing Window with Nailing Fin and Integrated J Channel/Brickmould

Installing Window with Nailing Fin and Integrated J Channel/Brickmould


  #1  
Old 04-13-20, 02:29 PM
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Installing Window with Nailing Fin and Integrated J Channel/Brickmould

I have never installed a window before and I am confused on the need for drip cap on the particular model of window I purchased. The window has a nailing fin and integrated J channel and brickmould. The instructions say to use dripcap, UNLESS it has the brickmould. Every video I watch on window installation says to use drip cap. However, since the top (and all sides/bottom) of the window has this "channel", if drip cap were installed, it would leave quite the gap underneath and I don't see how water would get IN the window or BEHIND the window once it is in this channel. I am thinking the siding just flows into the "channel" and then water just makes its way along that channel and then down the sides.

Do I need drip cap for this type of window?

I of course will flash the rough opening appropriately.

Here is a link to the window:

https://www.jeld-wen.com/en-us/produ...00/double-hung

It HAS the integral brickmould
 
  #2  
Old 04-13-20, 02:40 PM
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What kind of siding do you have?
 
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Old 04-13-20, 03:22 PM
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vinyl siding is what I have....i couldn't type just "vinyl" because for some reason there is a minimum amount of characters I have to type
 
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Old 04-13-20, 03:29 PM
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Ok. Then no, you wont use a drip cap.
.
I would suggest, however that after you remove the rows of vinyl siding where the window goes, and you have torn out the old window, that you take a piece of aluminum flashing that is about 12" wider than your window is, and lay it over the nail fin of the piece of siding that is just below the window. That way, when you install your window, water that runs down the sides of your integral j-channel will be directed out to the weep holes of the siding.

Place the window in the rough opening, shim it up about 3/8"-1/2", make sure it is level plumb and square, and that it isn't spread in the middle (measure width at top, middle and bottom) then fasten it to the wall sheathing. Cover the nail fin on the sides and top with window flashing tape.

Then you are ready to put the siding back on.
 
 

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