Weather stripping for sliding glass door with dog door

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ci_lantro
It looks like sloppy assembly on the insert. Notice how the top rail extends past the side (stile).

Also, something isn't plumb. Either the whole patio door is out of plumb or just the insert. With the insert removed, does the door close properly with no gap?
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Suzanne Freeman thanked graywings123
ci_lantro
I would try to trim the top rail of the insert back to where it is flush with side stile of the insert. Extend a straight line from the edge of the stile up across the rail. Assuming the insert is aluminum or vinyl, use a file and carefully remove material to the line. That will help close the gap somewhat. Then use a self adhesive weatherstrip as Graywings^^ suggested.
ci_lantro
Actually, I would uninstall the insert & reinstall it, shimming where necessary, to try to get it plumb. (or out of plumb, whichever it takes to close the gap on the slider door.) Uninstalled, it will be easier to file that excess off the top rail, too. Then add the weatherstripping if it is still needed.
live_wire_oak
Those door types are unwieldy at best, even when installed correctly. They never seal well, and tend to break often. A better choice is through the wall door, that leads out into a protected overhang.
DavidR
The other problem with such inserts is that the gap they leave between the two panes of glass in the partly-open door admits un-conditioned air and insects. Air conditioners in double-hung and slider windows have the same problem. The fix for both is to stuff closed-cell foam into the gaps.
Suzanne Freeman
Original Author
DavidR can you possibly share a link or photo of the type of closed cell foam you think could work for this gap? We will of course need it to stick to one side and not the other, so we can still actually use the door.
Suzanne Freeman
Original Author

Live_wire-oak what you are suggesting is not an option for us.
Josh Lankow
I have the same issue. Go to ace and get some weatherstripping, I used rubber, but I know exactly what is gonna happen when you put it on the door- the door will still have a gap because the weatherstripping is equal all the way down the door. What id suggest is cutting a wooden dowel, like you would use for security and locking the ajar sliding door, but cut it to be about a quarter inch too long. That way, when you compress the door against the weather stripping, it will compress the area without a gap and the stripping will fill the gap nicely.

How do you winterize a dog door on a sliding glass door?

Winterizing a Dog Door Use silicone caulk to close any air gaps and holes. Add weatherstripping around the door frame. Add magnets to the bottom of door so the flaps stay in place to help reduce heat loss. Reinforce flimsy door flaps with industrial plastic curtain material.

How does a dog door work on a sliding glass door?

When installing a pet door in a glass door, a panel is inserted into the sliding door track. The new panel that is inserted has glass on top and a pet door flap at the bottom. Once you install a doggie door in a glass door, the slider of the door slides in its track against the sliding glass pet door panel.