How To Prevent Exterior Door Jambs From Rotting?

 
Thread Tools Search this Thread Display Modes
Old 07-17-2017, 12:26 AM   #1
Pro
 
3bar's Avatar
 
Trade: carpenter
Join Date: Jan 2011
Posts: 327
Rewards Points: 300

How To Prevent Exterior Door Jambs From Rotting?


i had to replace an 8 year old (i installed new) exterior steel door with wood jamb today because the jamb was completely rotted on the bottom. some rot on top brick moulding even. and even the door panel itself looked swelled on the bottom. this door doesnt see sun, so perhaps it stays wetter longer....menards mastercraft door by the way. not buying these again
anyways i see a lot of wood exterior door jams rotting on less than 10 year old homes.
what can i do to prevent rot without having to go with more expensive composite jambs?

on the door install today, i removed the threshold and painted the bottom frame edges. not sure if this will help.
is it better to caulk the frame to the aluminum threshold, or will that trap moisture?
3bar is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 07-17-2017, 12:51 AM   #2
Fire up the BBQ
 
griz's Avatar
 
Trade: GC
Join Date: Nov 2009
Location: CA
Posts: 18,755
Rewards Points: 3,184

Re: How To Prevent Exterior Door Jambs From Rotting?


you may have to make your own jambs out of a more weather resistant material.

Seal & paint properly and keep the water off of them.

Advertisement

__________________
SOME JOBS JUST AREN'T WORTH DOING:
griz is online now  
Old 07-17-2017, 12:54 AM   #3
Member
 
sefiroxx's Avatar
 
Trade: remodel/handy
Join Date: May 2016
Posts: 34
Rewards Points: 68

Re: How To Prevent Exterior Door Jambs From Rotting?


Mtg typically requires 3' overhang as part of the warranty. Rain splash from a lack of gutters, overflowing gutters etc create moisture problems.

The door supplier I just makes a custom jamb with the bottom 8-12" a moisture composite.

Before installing jambs, brick moldings, be sure to paint all sides and edges with paint or water proof material. The caulk everything well. Most rot comes from water being wicked up the edge or through paint cracks caused when shoes, wheels etc hit the jamb/molding

Sent from my XT1053 using Tapatalk
sefiroxx is offline  
Old 07-17-2017, 01:07 AM   #4
Pro
 
3bar's Avatar
 
Trade: carpenter
Join Date: Jan 2011
Posts: 327
Rewards Points: 300

Re: How To Prevent Exterior Door Jambs From Rotting?


why cant jambs be made of treated lumber?
but i guess door manufacturers like the fact you'll be buying a new door down the road....disposable society..
3bar is offline  
Old 07-17-2017, 01:32 AM   #5
Member
 
sefiroxx's Avatar
 
Trade: remodel/handy
Join Date: May 2016
Posts: 34
Rewards Points: 68

Re: How To Prevent Exterior Door Jambs From Rotting?


Pressure treated used chemicals that gassed off - and thus were not allowed on interiors

Sent from my XT1053 using Tapatalk
sefiroxx is offline  
Old 07-17-2017, 07:49 AM   #6
Pro
 
Randy Bush's Avatar
 
Trade: Exterior Remodeling
Join Date: Mar 2011
Location: Great Falls, MT
Posts: 4,214
Rewards Points: 3,144

Re: How To Prevent Exterior Door Jambs From Rotting?


Probably dryer climate here , but I wrap mine then caulk the bottom seems to work well. Also for around a $100 or so more can install one with an extruded aluminum jambs.
Randy Bush is online now  
Old 07-17-2017, 08:02 AM   #7
Pro
 
avenge's Avatar
 
Trade: Remodeling
Join Date: Sep 2008
Location: Not here
Posts: 2,152
Rewards Points: 1,808

Re: How To Prevent Exterior Door Jambs From Rotting?


If you want longevity spend more money. I always use PVC brick mould and composite jambs.
avenge is online now  
The Following 2 Users Say Thank You to avenge For This Useful Post:
dutchroots2 (07-17-2017), hdavis (07-17-2017)
Old 07-17-2017, 09:20 AM   #8
Pro
 
hdavis's Avatar
 
Trade: remodeling
Join Date: Feb 2012
Location: CoastalME
Posts: 17,025
Rewards Points: 1,689

Re: How To Prevent Exterior Door Jambs From Rotting?


Treated lumber has been used for these and windows for a LONG time. It just isn't CCA or ACQ. It just takes a fungicide, and there are plenty of fungicides for interior use.

Most jambs with this problem have a cut end that allows the water to wick up the wood. I've seen them start rot in 2 years, even with full sun South East exposure. Painting over does nothing except give you prettier rotted wood.
hdavis is offline  
The Following User Says Thank You to hdavis For This Useful Post:
greg24k (07-17-2017)
Old 07-17-2017, 09:36 AM   #9
General Contractor
 
greg24k's Avatar
 
Trade: New Home Construction-Additions-Remodeling
Join Date: May 2007
Location: NJ
Posts: 6,835
Rewards Points: 6,534

Re: How To Prevent Exterior Door Jambs From Rotting?


Therma thru and other companies make rot-resistant jambs with rot-resistant Alaskan Yellow Cyprus finger jointed to the bottom of each jamb leg to protect the jamb where itís most vulnerable to moisture. They also make composite brick-mold.
__________________
I never lost a cent on the jobs I didn't get!
greg24k is offline  
The Following 2 Users Say Thank You to greg24k For This Useful Post:
hdavis (07-17-2017), SouthonBeach (07-18-2017)
Old 07-17-2017, 09:48 AM   #10
Pro
 
hdavis's Avatar
 
Trade: remodeling
Join Date: Feb 2012
Location: CoastalME
Posts: 17,025
Rewards Points: 1,689

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by greg24k View Post
finger jointed to the bottom of each jamb leg
That's a big clue - all the untreated pine ones I see rot up to the glued finger joint, and the rot stops there.
hdavis is offline  
Old 07-17-2017, 09:50 AM   #11
I like Green things
 
WarnerConstInc.'s Avatar
 
Trade: Architectural Mill Work
Join Date: Jan 2008
Location: In a van, down by the river. Auburn, IN
Posts: 21,191
Rewards Points: 2,094

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by greg24k View Post
Therma thru and other companies make rot-resistant jambs with rot-resistant Alaskan Yellow Cyprus finger jointed to the bottom of each jamb leg to protect the jamb where itís most vulnerable to moisture. They also make composite brick-mold.
Yellow cedar.

Sent from my SM-G950U using Tapatalk
__________________
Warner Mill Works
Facebook
YouTube
WarnerConstInc. is online now  
Old 07-17-2017, 10:06 AM   #12
Pro
 
hdavis's Avatar
 
Trade: remodeling
Join Date: Feb 2012
Location: CoastalME
Posts: 17,025
Rewards Points: 1,689

Re: How To Prevent Exterior Door Jambs From Rotting?


I've never seen a really old jamb sealed on the backside, plus they had a lot of air leakage.

Prime4s, caulk the bottom to keep water out (really, it just traps water that runs down the door), make sure your gasketing keeps air flow to a minimum - it's pretty much a perfect recipe for rot.

Put a storm door over it all, and you can use almost any jamb.
hdavis is offline  
Old 07-17-2017, 10:38 AM   #13
General Contractor
 
greg24k's Avatar
 
Trade: New Home Construction-Additions-Remodeling
Join Date: May 2007
Location: NJ
Posts: 6,835
Rewards Points: 6,534

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by WarnerConstInc. View Post
Yellow cedar.

Sent from my SM-G950U using Tapatalk
Therma Tru show in their specs "primed Pine with rot-resistant Alaskan Yellow Cyprus finger jointed to the bottom of each jamb leg to protect the jamb"
__________________
I never lost a cent on the jobs I didn't get!
greg24k is offline  
Old 07-17-2017, 10:45 AM   #14
John the Builder
 
SmallTownGuy's Avatar
 
Trade: Carpenter/Builder
Join Date: Sep 2012
Location: Oxford, MI
Posts: 9,224
Rewards Points: 7,628

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by WarnerConstInc. View Post
Yellow cedar.

Sent from my SM-G950U using Tapatalk
Quote:
Originally Posted by greg24k View Post
Therma Tru show in their specs "primed Pine with rot-resistant Alaskan Yellow Cyprus finger jointed to the bottom of each jamb leg to protect the jamb"
Same difference is what he's saying...

http://nativeplantspnw.com/alaska-ye...-nootkatensis/
__________________
ďI tried being reasonable, I didnít like it.Ē Ė Clint Eastwood


Carpe Diem/Seize The Day !
SmallTownGuy is online now  
Old 07-17-2017, 12:02 PM   #15
I like Green things
 
WarnerConstInc.'s Avatar
 
Trade: Architectural Mill Work
Join Date: Jan 2008
Location: In a van, down by the river. Auburn, IN
Posts: 21,191
Rewards Points: 2,094

Re: How To Prevent Exterior Door Jambs From Rotting?


Plus it's spelled cyress.

Sent from my SM-G950U using Tapatalk
__________________
Warner Mill Works
Facebook
YouTube
WarnerConstInc. is online now  
Old 07-17-2017, 01:04 PM   #16
Pro
 
RichVT's Avatar
 
Trade: Remodeling
Join Date: Feb 2009
Posts: 125
Rewards Points: 289

Re: How To Prevent Exterior Door Jambs From Rotting?


I've used frames with a composite bottom. http://www.enduraproducts.com/produc...ew/framesaver/

The problem with them is that the composite section is really short and the finger joint between the composite and the wood opens up over time.

I now only use solid PVC frames. They are more flexible so I shim in a few extra spots.
RichVT is online now  
Old 07-17-2017, 01:45 PM   #17
Pro
 
Dirtywhiteboy's Avatar
 
Trade: Home Framing- Roof Stacking
Join Date: Oct 2010
Location: Honolulu Oahu,Hawaii
Posts: 13,380
Rewards Points: 5,608

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by sefiroxx View Post
Pressure treated used chemicals that gassed off - and thus were not allowed on interiors

Sent from my XT1053 using Tapatalk
Not here ,, we use PT trim all the time. Some comes PT and pre primed.
__________________
I Have Done So Much With So Little For So Long, I Can Do Almost Anything With Nothing Now
Dirtywhiteboy is online now  
The Following User Says Thank You to Dirtywhiteboy For This Useful Post:
hdavis (07-17-2017)
Old 07-17-2017, 02:02 PM   #18
General Contractor
 
greg24k's Avatar
 
Trade: New Home Construction-Additions-Remodeling
Join Date: May 2007
Location: NJ
Posts: 6,835
Rewards Points: 6,534

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by WarnerConstInc. View Post
Plus it's spelled cyress.

Sent from my SM-G950U using Tapatalk
I just copied and paste... If it makes that much difference to you, contact Therma Tru and ask them to run a spell checker on their website Here is the link to save you some trouble.
__________________
I never lost a cent on the jobs I didn't get!
greg24k is offline  
Old 07-17-2017, 02:07 PM   #19
Pro
 
Dirtywhiteboy's Avatar
 
Trade: Home Framing- Roof Stacking
Join Date: Oct 2010
Location: Honolulu Oahu,Hawaii
Posts: 13,380
Rewards Points: 5,608

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by WarnerConstInc. View Post
Plus it's spelled cyress.
Quote:
Originally Posted by greg24k View Post
I just copied and paste... If it makes that much difference to you, contact Therma Tru and ask them to run a spell checker on their website Here is the link to save you some trouble.
I think it's 2 different trees,,,,
__________________
I Have Done So Much With So Little For So Long, I Can Do Almost Anything With Nothing Now
Dirtywhiteboy is online now  
Old 07-17-2017, 02:11 PM   #20
I like Green things
 
WarnerConstInc.'s Avatar
 
Trade: Architectural Mill Work
Join Date: Jan 2008
Location: In a van, down by the river. Auburn, IN
Posts: 21,191
Rewards Points: 2,094

Re: How To Prevent Exterior Door Jambs From Rotting?


Quote:
Originally Posted by greg24k View Post
I just copied and paste... If it makes that much difference to you, contact Therma Tru and ask them to run a spell checker on their website Here is the link to save you some trouble.
They are made 20 minutes from me, in a white trash stronghold town, so that's to be expected.

Sent from my SM-G950U using Tapatalk

Advertisement

__________________
Warner Mill Works
Facebook
YouTube
WarnerConstInc. is online now  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How do I prevent stripping screws in door jambs?` Obi Wan Cannoli Windows, Siding and Doors 38 09-11-2015 09:29 PM
Latest ways to prevent cigarette smoke passing through ducts? bob_cntrctr HVAC 13 04-04-2013 10:29 PM
Why is wood rotting ? SKC Construction 44 07-23-2012 02:06 AM
Top 10 framing errors - and how to prevent them (From a Professional Builder Email) wallmaxx Framing 9 02-20-2012 06:57 PM
Wood lap siding rotting behind electrical meter base AdRog Windows, Siding and Doors 17 09-27-2011 08:49 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?