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Old 02-01-2019, 08:48 AM   #1
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Window Trim seams pulling apart


Hi all,


The issue I'm having in my bathroom is at the 45 degree junction of my window moulding, the seam pulls apart. When we redid the bathroom I saved all the trim and stripped, sanded and reused it. Does anyone have a fix for this? I don't mind taking them down in order to do fix it correctly. I've included photos of the problem.


Thanks,


Jeff
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Old 02-01-2019, 09:51 AM   #2
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Re: Window Trim seams pulling apart


Little bit of paintable caulking will work. The bathroom is exposed to huge swings in humidity which will make the wood dance a bit more.



How is the bath venting being handled right now?
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Old 02-01-2019, 11:07 AM   #3
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Re: Window Trim seams pulling apart


Windows on Wash,


I've tried that fix already fix and it still keeps happening. We have a vent fan in the bathroom with a timer . We always run it for an hour each time we use the shower.



Thanks,


Jeff
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Old 02-01-2019, 11:28 AM   #4
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Re: Window Trim seams pulling apart


Jeff,
Use Poplar or cedar in the bathroom. Be sure to prime all exposed sides when cut, even the backside. At least prime all 6 sides. I prime and paint all 6 sides. I always use oil based paint. I have never had an issue.


Andrew
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Old 02-01-2019, 11:42 AM   #5
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Re: Window Trim seams pulling apart


What he said...


You have to use a denser wood here and seal all the edges. I would go so far as to prime the backside as well.
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Old 02-01-2019, 11:46 AM   #6
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Re: Window Trim seams pulling apart


Throw a towel t the bottom of the door and run the fan and see if you are sucking cold air in there.
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Old 02-01-2019, 01:43 PM   #7
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Re: Window Trim seams pulling apart


Good advice. If the window isn't well sealed, that mixing of air right there will create a host of issues.
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Old 02-01-2019, 02:46 PM   #8
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Re: Window Trim seams pulling apart


Nobody uses wood any more if it is going to be painted - use pvc - we use it all of our million $$$ homes
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Old 02-01-2019, 05:22 PM   #9
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Re: Window Trim seams pulling apart


Alex plus paintable caulk. Stretches and contracts with the wood.
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Old 02-01-2019, 07:26 PM   #10
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Re: Window Trim seams pulling apart


What ront said, should always use a sealant on windows, here's another one available at HD

https://www.emisupply.com/catalog/ba...B#.XFTjKy2ZM1I
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Old 02-02-2019, 02:23 AM   #11
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Re: Window Trim seams pulling apart


I often build my "picture frame" window trim on the workbench with biscuits and glue. That way, the joint stays tight and then I simply hang it on the wall, position for a uniform reveal with the jamb and nail it in. Since all windows and doors seem to have issues in the corners I try not to nail too close to where they could be a build up of compound.

(I alway hang sheetrock so that a single sheet covers the top of any window or door and extends to each side a minimum of one stud bay so there can be NO cracking of the wall at the corner of the door/window, there is NO seam at the corners and the trim lays much flatter.)

Finish carpenters also use glue when they trim if they didn't have a nearby shop and the time to build the frame remotely. Most commonly, the 45 degree is slightly undercut to the back, the trim is installed with glue at the 45 joint and scrap wood is use to push the head piece down into the side trim using the ceiling to wedge the scrap as a level. Obviously, the ceiling is protected from being marked by using a piece of shim or other flat surface.

If you don't use glue, the joint can seperate - but I guess you know that.
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Old 02-02-2019, 06:09 AM   #12
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Re: Window Trim seams pulling apart


Quote:
Originally Posted by ront02769 View Post
Alex plus paintable caulk. Stretches and contracts with the wood.

IMO that isn't a very good caulk! I'd use White Lightning siliconized acrylic caulk. When that isn't good enough I search for a polyurethane caulk. Priming the edge of the cuts and the backside of the wood will also help.
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Old 02-02-2019, 05:15 PM   #13
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Re: Window Trim seams pulling apart


Everyone keeps saying to caulk it and repaint.

Yes, that will work for a while.

You have two pieces of wood that are not connected (perhaps there is a nail through the side into the other section - which is really just a pivot point, not a connection).

No matter how much caulk you smear onto a moving joint and no matter what brand you smear, the two pieces will continue to move independently and eventually, the gap will show once again. However, when it does happen again, let's say 5 years from now, you won't be able to match the existing paint so you'll have to paint the entire wall to hide the repair.

You said you're willing to remove the trim - That is the way to fix this. Remove, clean up any residual attempts to hide the gap, then glue it together and fasten as a carpenter would do. Once dry and on the wall there may/will probably be a minor gap/bump that you CAN use painter's caulk to hide since the joint is no STABLE.

Just want you to not have to revisit this in the future. And, YES, I love the good caulks that can hide sins and minor cosmetic blemishes - but they ARE NOT structural elements and are mostly used by painters after the finish carpenter has done their job correctly.

(I'm surprised no one said to use toothpaste to fill the void!)
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