Author Topic: How to best fill miter joints on doors  (Read 2443 times)

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Offline Twoodman66

  • Posts: 56
How to best fill miter joints on doors
« on: April 15, 2017, 02:25 PM »
Hi All
Trying my best to match existing kitchen cabinet profile for pantry add on
Doors are mitered with dominos. What  is the best way to fill my black lines??
Pic is door with two coats of kem aqua surfacer already applied.miters looked a lot better prior to applying finish.if we were brushing  finish on I would just flood the joint and let it dry. Any advise is greatly appreciated
Best
Kevin

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Offline ear3

  • Posts: 3351
Re: How to best fill miter joints on doors
« Reply #1 on: April 16, 2017, 02:58 PM »
Why not a white caulk that you can then paint over?

Is there something up with your mitre saw blade that's making the gaps appear at the edges of the mitre rather than in the center?
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Offline antss

  • Posts: 1374
Re: How to best fill miter joints on doors
« Reply #2 on: April 16, 2017, 05:13 PM »
My experience has been it's a losing battle. Especially the older they get.

That joint is just not a stable one , and doesn't deal with seasonal movement very well.  Most big manufactures have some type of wording in their contracts pointing out that seeing this joint through the finish is not a warrantable defect.

Offline bkharman

  • Posts: 1939
Re: How to best fill miter joints on doors
« Reply #3 on: April 16, 2017, 05:16 PM »
Use silicon or another highly flexible "caulk". Since it is high up, it might not show and you may not need paint over it. You can try and mask the two pieces to only have the caulk fill the void if you want to be diligent.

Cheers. Bryan.


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Offline Twoodman66

  • Posts: 56
Re: How to best fill miter joints on doors
« Reply #4 on: April 16, 2017, 07:53 PM »
Hey Ed
Miter saw workin fine. I believe that my radius is off from passing the pieces through
The table at 6' rather than sizing all my pieces first. I'm concerned about the caulking as this is my first time using kem Aqua and not sure how it will react to the
Caulking. Afraid of cracking. I tried flooding with spray today while  that did help I still have small black lines. Maybe my top coat will fill( kem Aqua plus).? Not sure as it's a thinner viscosity than the SW surfacer




Offline kdzito

  • Posts: 314
Re: How to best fill miter joints on doors
« Reply #5 on: April 16, 2017, 08:29 PM »
Try fill or wax sticks.
Building one day at a time.

Offline bkharman

  • Posts: 1939
Re: How to best fill miter joints on doors
« Reply #6 on: April 16, 2017, 08:54 PM »
Hey Ed
Miter saw workin fine. I believe that my radius is off from passing the pieces through
The table at 6' rather than sizing all my pieces first. I'm concerned about the caulking as this is my first time using kem Aqua and not sure how it will react to the
Caulking. Afraid of cracking. I tried flooding with spray today while  that did help I still have small black lines. Maybe my top coat will fill( kem Aqua plus).? Not sure as it's a thinner viscosity than the SW surfacer

This is why I said caulk over top. It appears to be white or maybe even bright white. Quality paintable silicon should be fine.

Cheers. Bryan. 


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Offline tjbnwi

  • Posts: 5265
  • Cedar Tucky Indiana
Re: How to best fill miter joints on doors
« Reply #7 on: April 16, 2017, 10:43 PM »
This;

https://www.sherwin-williams.com/homeowners/products/shermax-urethanized-elastomeric-sealant

Very high stretch rate. Allow to cure, reshoot.

Always prime prior to caulking.

Tom

Offline wptski

  • Posts: 443
Re: How to best fill miter joints on doors
« Reply #8 on: April 17, 2017, 06:27 AM »
Always prime prior to caulking.

Tom
That's if wood is bare, correct?
Bill
Most Confused!

Offline rizzoa13

  • Posts: 560
Re: How to best fill miter joints on doors
« Reply #9 on: April 17, 2017, 06:30 AM »
The paintdoc for kemaqua says to prime anything caulked before laying down the finish. Makes sense for adhesion plus it'll protect you from your caulk/filler flashing through.

Offline wptski

  • Posts: 443
Re: How to best fill miter joints on doors
« Reply #10 on: April 17, 2017, 07:44 AM »
The paintdoc for kemaqua says to prime anything caulked before laying down the finish. Makes sense for adhesion plus it'll protect you from your caulk/filler flashing through.
What I'm getting at is that caulk doesn't adhere to bare wood well but what your saying sounds like you'd have to prime twice.
Bill
Most Confused!

Offline Twoodman66

  • Posts: 56
Re: How to best fill miter joints on doors
« Reply #11 on: April 17, 2017, 05:19 PM »
Hi
At this point I have two coats of Kem Aqua surfacer.
I was thinking to shoot one coat of finish and then use the caulk.
My thinking is that the caulking will pull easier against the finish as opposed to surfacer

Offline Abram

  • Posts: 16
Re: How to best fill miter joints on doors
« Reply #12 on: April 17, 2017, 06:50 PM »
I usually use the Mohawk Fil-Stik http://www.mohawk-finishing.com/catalog_browse.asp?ictNbr=106 And then prime / paint over it. Works good.

Offline Twoodman66

  • Posts: 56
Re: How to best fill miter joints on doors
« Reply #13 on: April 17, 2017, 07:21 PM »
Really. Mmm  interesting. I thought they are waxed based(as I melt and blend colors often) and would repel finish. I've always applied after install/finish.

Offline Dovetail65

  • Posts: 4594
    • Rose Farm Floor Medallions and Inlays
Re: How to best fill miter joints on doors
« Reply #14 on: April 17, 2017, 09:26 PM »
Actually use the epoxy. I use it for floors, you can mix the colors and on a door like that its a lifetime repair. I have had crack repairs in floors at 8 year repaired and counting(in a foyer walked on constantly), still looking perfect. Just squeeze it together,  It's a two part. But make sure yours are fresh as if they are too old they are more difficult and not as smooth to work with. This is NOT a floor filler for tons of gaps between boards though, it's for a repair here and there, as your door pics show.

I use these every day. I have a couple of the full kits always on hand and mix them with other brands on the market with perfect results. When I make a repair and mix the colors for a color match it's very difficult for me to find where I made the repair, sometimes I can find the repair at all. This stuff is durable, hard as a rock, can be left as is  or worked and coated,  its up to you and the situation. Sometimes I mix it with saw dust, most times I dont.

Caulk is crap for what you are doping, this is the ticket. Now if I was trimming out a house with poplar, yeah I would caulk the raw wood before priming and painting, but NO Caulk on a  kitchen door miter, that's a mistake. Use this stuff or make your own putty with epoxy, saw dust and tint if needed.

http://www.mohawk-finishing.com/catalog_browse.asp?ictNbr=113
« Last Edit: April 17, 2017, 09:36 PM by Dovetail65 »
The one who says it can't be done should avoid interrupting the person doing it.

Offline tjbnwi

  • Posts: 5265
  • Cedar Tucky Indiana
Re: How to best fill miter joints on doors
« Reply #15 on: April 17, 2017, 09:49 PM »
The paintdoc for kemaqua says to prime anything caulked before laying down the finish. Makes sense for adhesion plus it'll protect you from your caulk/filler flashing through.
What I'm getting at is that caulk doesn't adhere to bare wood well but what your saying sounds like you'd have to prime twice.

I prime, caulk, fill/touch up any "dings", apply second coat of Surfacer.

Priming allows you to do the final once over for anything that may have been missed in prep.

Tom