Help Flashing Entry Door

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Old 10-03-17, 07:55 AM
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Help Flashing Entry Door

Hey all,

I will be installing a replacement double entry door (64" x 80" with 4-9/16" jamb) in a few weeks and want to get everybody's opinion on the best way to flash the opening.

I will be installing a Jeld Wen fiberglass double entry door in a standard 2x4 construction with brick veneer cladding. So, I have a 2x4 studded wall with some type of drywall-esqu sheathing, an air gap, then brick veneer as the exterior cladding. It appears the total thickness from interior 2x4 surface to outside surface of brick veneer is ~ 10 inches. This is all on a concrete slab foundation. There appears to currently be a threshold, then some custom bronze colored nosing under the threshold that extends to edge of foundation/sill.

All the installation videos I see are into a sided home with no air gap / rainscreen, which is essentially what I have with the brick veneer. Anybody ever installed an exterior door on brick veneer construction?

Thanks
 
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Old 10-04-17, 09:37 AM
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The more I think about this, the absolute best option is to get a custom sill pan fabricated since the standard 2x4 or 2x6 sill pans wouldn't be deep enough to accommodate my exterior wall thickness with the brick veneer (~10 inches). Only issue with this is that I don't have access to get precise measurements without ripping apart all the exterior trim, so not exactly a feasible thing to do.

Other option is to forgo sill pan and set the new door threshold in 3 fat beads of poly caulk running between the rough opening and hope water does not penetrate. The door is under an overhang, but does often get hit with wind driven rain.

Anything else I'm not thinking of?
 
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Old 10-06-17, 04:12 AM
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set the new door threshold in 3 fat beads of poly caulk running between the rough opening and hope water does not penetrate
.
Yes, that is the normal way to do it when you aren't using a sill pan. You have to apply the caulk where the door sill is solid, (not hollow) so look at the bottom of the door first to figure out where the best place to caulk the rough opening is. Applying a bead in front of the door sill usually only traps water under the door... it needs to be able to drain, and dry out.

Wall thickness for the door jamb looks like 5 1/4" to me. If your jambs are wood you could treat the bottom of the door with a couple coats of a wood preservative (like coppercoat) a few days in advance of setting the door... (the end cuts on the jambs suck up water like a straw.) If your jambs are made of a composite material, like Endura sills are, they won't rot.
 
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Old 10-06-17, 02:53 PM
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Thanks for the follow up.

I made sure to get the treated jamb on my new door. And yes, I know what you mean about applying the sealant on a spot that will actually make contact with the threshold/slab.

I actually took off some of the trim (stop molding) and was able to figure out that the jamb thickness was a normal 4-9/16".

Should I be concerned about not using a sill pan in this installation or will the under threshold sealant (I'll use Quad Max) be sufficient? The current brick mold is rotting at bottom and I set a level on the gold nosing and it is pitched toward the interior...

Guess once I get that off, I will have to use the grinder to level off that area of the slab.
 
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Old 10-06-17, 03:17 PM
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The additional 3/4" trim behind your brickmould is what makes me say it looks like it's 5 1/4". Unless that's your 1" thick brickmould and someone added another piece of trim on top of the brickmould.

Setting it on the sealant will be fine... there are millions of doors installed that way. I would leave the gold flashing. Once the old door and threshold is removed you might consider sliding some plastic shims under it to raise it slightly if it is slightly pitched the wrong direction.
 
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Old 10-07-17, 09:13 AM
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Great eye. Yes, that is a 1x piece of trim that is sandwiched between the brick mold and jamb. Should I have gotten a 5-1/4" jamb width?

The boss doesn't want to keep the gold flashing piece. Maybe I'll have to find a replacement that isn't gold. Any ideas on where I'd find something like that? I've seen some Pemko nosing, but not sure it's long enough to cover our deep sill.
 
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Old 10-07-17, 11:59 AM
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Yeah thats why i said it. If you get a 4 9/16 door it wont be as wide as the existing.

The metal flashing is no doubt custom. It also likely covers something that is not too sightly to begin with.
 
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Old 10-07-17, 12:55 PM
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Oh well, I already ordered the 4-9/16" jamb size. I guess I'll have to come back with a brick mold and the extra piece of 1x trim underneath.

Maybe I'll see if I can get a custom piece bent from a sheet metal place are town. Thanks
 
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