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Question DetailsAsked on 7/30/2015

should my new window trim be caulked?

I've had two different crews work on my new construction (nail fin) windows. The subcontractors caulked the outside trim all around with clear silicone caulk. The contractor crew did minimal caulking on the sides with white caulk. The exterior is T-111. Should I expect that the top, sides, and bottom of the trim boards be caulked on the outer edges?

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2 Answers

0
Votes

The new consruction window if installed properly should have house wrap pulled in and stapled down first sill pan flashing second, after window was inserted then nailed flashing tape should have placed over the nailed fin. as for the exterior its done till the siding goes up if there is caulking set around the window where it meets the siding or exterior caseing that would be good to prevent water from getting inbetween the trim and the window, you tube has many videos on how to install new construction windows.

Answered 4 years ago by the new window man

0
Votes

Yes - BARE minimum would be caulking around the brickmold (assuming it overlaps the T1-11) all the way around if there is brick mold. If the bottom is a sill then depending on installation, if there is a water shield in the rough openign that tails out there, then caulk UNDER the watershield where it meeds the rough opening framing, but not between the water shield and the sill, because that is a drainage point if water ever gets that far in. There are lots of different kinds of windows and flashing and trim, but generally speaking - the interface between window frame and T1-11 should have been caulked during installation - on the T1-11 face right at the edge of the opening if the window overlapoped the T1-11, at the intersection of the window frame and trim or flashing (back side reentrant corner) with caulk or sometimes flexible foam sealer so it would contact and seal to the T1-11 as it was pushed in if window frame was smaller than the T1-11 before the flashing want on.


Should also have been caulked, as applicable to your windows -

1) behind flashing at contact with T1-11 as the trim went in (sepaarately or integral with window)


2) between window frame and brick mold trim if separate trim, and also behind the brick mold at the outer edge where it contacts the T1-11


3) around the contact edge of the brick mold / outer trim at T1-11 contact


4) should NOT have been caulked at the bottom of the side C or J channels (not likely used in your case unless new siding went in afterwards) or at the ends of the bottom C or J channel, as these are drainage points.


The gap between window frame and rough opening should also have been sealed with caulk if small opening, otherwise low-pressure spray-in foam and possibly foam, backer rod behind the interior trim.

Answered 3 years ago by LCD




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