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#758231 - 06/08/13 07:40 PM Sill Plate for French Door
Anonymous
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Instructions say to install a sill plate but need to but is one really necessary if using silicon caulk instead? The door is located where it won't get a lot of rain and the pro I was going to use doesn't use them. Do most people use sill plates?

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#758236 - 06/08/13 08:30 PM Re: Sill Plate for French Door [Re: Anonymous]
Able_Dog Offline
Carpal Tunnel

Registered: 12/07/03
Posts: 33508
Loc: N Georgia
Your post is confusing, there is no "sill plate" under a French door. Maybe you mean a "threshold".

I don't know how silicone caulk can replace a threshold.

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#758237 - 06/08/13 08:37 PM Re: Sill Plate for French Door [Re: Anonymous]
Able_Dog Offline
Carpal Tunnel

Registered: 12/07/03
Posts: 33508
Loc: N Georgia
Originally Posted By: Anonymous
Instructions say to install a sill plate but need to but is one really necessary if using silicon caulk instead? The door is located where it won't get a lot of rain and the pro I was going to use doesn't use them. Do most people use sill plates?


Is it an exterior door?

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#758241 - 06/08/13 09:06 PM Re: Sill Plate for French Door [Re: Able_Dog]
nicki1 Offline
fanatic

Registered: 06/26/03
Posts: 497
Loc: Maryland
I think the proper term sill pan. So the question is whether a sill pan is necessary. Believe the answer is yes.

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#758245 - 06/08/13 10:42 PM Re: Sill Plate for French Door [Re: nicki1]
Able_Dog Offline
Carpal Tunnel

Registered: 12/07/03
Posts: 33508
Loc: N Georgia
Originally Posted By: nicki1
I think the proper term sill pan. So the question is whether a sill pan is necessary. Believe the answer is yes.


Yes, I guess that's what Anon means.
If it's over a wood joist floor it a good idea. Slab on grade, you can probably caulk it.

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#758249 - 06/09/13 04:33 AM Re: Sill Plate for French Door [Re: Anonymous]
Just_Bill Offline
Carpal Tunnel

Registered: 01/27/02
Posts: 20028
Loc: Wilmington, Delaware
You should never rely on caulk alone to keep out water, no matter how much. Water destroys wood!! Caulk is OK as a secondary block, but good mechanical technique/material that stops water should come first.
_________________________
NOBAMA

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#758266 - 06/09/13 06:33 AM Re: Sill Plate for French Door [Re: Anonymous]
CabinConnection Online   content
Bigfoot
Carpal Tunnel

Registered: 01/20/04
Posts: 38608
Loc: The Indianhead's Left Nostril....
Originally Posted By: Anonymous
Do most people use sill plates?

We use what's there. Wood or concrete we use two beads of sealant, per Marvin's instructions. Only exception is if the sill is at (or within an inch of) finished grade, then we make sure there's a channel just outside the door, and put a drip edge/flashing under the sill. Again, per Marvin's instructions.

I'd look up your specific door manufacturer's instructions and follow them.

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#758269 - 06/09/13 06:45 AM Re: Sill Plate for French Door [Re: Just_Bill]
Able_Dog Offline
Carpal Tunnel

Registered: 12/07/03
Posts: 33508
Loc: N Georgia
"You should never rely on caulk alone to keep out water, no matter how much."

I put door sills ON CONCRETE SLABS with a couple of beads of sealant. The last one I did over a rim joist I flashed with aluminum flashing.

99% of the doors I've installed have been on concrete slabs.

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