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Undercut interior house doors #4710164
03/29/18 12:40 AM
03/29/18 12:40 AM
Joined: Dec 2010
Posts: 945
MO
FirstNissan Offline OP
FirstNissan  Offline OP
Joined: Dec 2010
Posts: 945
MO
Hi, my wife and I are looking at our first house purchase. The home inspection was just completed yesterday, they commented that the bedroom doors need to be undercut by 1/2 inch in order for adequate air circulation for the air conditioning system. Is this a job I can do with my tablesaw or is this something that needs to be done by a professional. The interior doors are your standard generic all white, lightweight doors.

Thank you for the help!


2017 Toyota Sienna (Hers)
2017 Toyota Sienna (His)
Re: Undercut interior house doors [Re: FirstNissan] #4710170
03/29/18 01:06 AM
03/29/18 01:06 AM
Joined: Dec 2012
Posts: 606
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 606
Washington for now

Re: Undercut interior house doors [Re: FirstNissan] #4710171
03/29/18 01:06 AM
03/29/18 01:06 AM
Joined: May 2005
Posts: 764
USA
97prizm Offline
97prizm  Offline
Joined: May 2005
Posts: 764
USA
Here is what at least one site says door undercutting


If at first you don't succeed fail fail again. (Waldorf and Statler.)
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Re: Undercut interior house doors [Re: FirstNissan] #4710173
03/29/18 01:14 AM
03/29/18 01:14 AM
Joined: Apr 2012
Posts: 5,167
MA
Wolf359 Offline
Wolf359  Offline
Joined: Apr 2012
Posts: 5,167
MA
It should be fine, my buyers do that all the time too. Typically what happens is that someone installs carpets and that gets rid of the gap under the door. The table saw is the best way to do it. If you've got a steady hand, you could even use a skill saw. Only issue is if they've already been cut, typically there's not that much you can take off on a hollow core door, but I think if they're original a 1/2 inch should be fine.

Re: Undercut interior house doors [Re: FirstNissan] #4710184
03/29/18 02:27 AM
03/29/18 02:27 AM
Joined: Oct 2012
Posts: 2,109
Northern Ontario, Canada
Danno Offline
Danno  Offline
Joined: Oct 2012
Posts: 2,109
Northern Ontario, Canada
I used a hand circular saw with no problems on my doors. 2 layers of painters tape on the cut helps keep edge chipping to a minimum.


2016 Sorento SX V6 AWD
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Re: Undercut interior house doors [Re: FirstNissan] #4710208
03/29/18 05:50 AM
03/29/18 05:50 AM
Joined: Oct 2008
Posts: 19,095
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,095
Sunny Florida
You can buy or rent a jamb saw and cut them on the floor too...


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Re: Undercut interior house doors [Re: FirstNissan] #4710234
03/29/18 06:57 AM
03/29/18 06:57 AM
Joined: Dec 2006
Posts: 8,368
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,368
Illinois
So, is the real problem that there aren't any cold air returns in the bedrooms... so the solution is to cut the bedroom doors shorter, so that air can be pulled from underneath the door, when it is closed?


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: Undercut interior house doors [Re: mrsilv04] #4710285
03/29/18 08:26 AM
03/29/18 08:26 AM
Joined: Oct 2012
Posts: 2,109
Northern Ontario, Canada
Danno Offline
Danno  Offline
Joined: Oct 2012
Posts: 2,109
Northern Ontario, Canada
Originally Posted By: mrsilv04
So, is the real problem that there aren't any cold air returns in the bedrooms... so the solution is to cut the bedroom doors shorter, so that air can be pulled from underneath the door, when it is closed?

Pretty much nailed it.


2016 Sorento SX V6 AWD
2015 KIA RIO SX
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Re: Undercut interior house doors [Re: FirstNissan] #4710304
03/29/18 08:42 AM
03/29/18 08:42 AM
Joined: May 2009
Posts: 12,199
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,199
N.H, U.S.A.
If you don't like that look you could knock a vent panel into and interior wall. IIRC my Mother's condo in SW Florida had these.

Or you could keep the door ajar smile


2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Undercut interior house doors [Re: mrsilv04] #4710305
03/29/18 08:44 AM
03/29/18 08:44 AM
Joined: May 2012
Posts: 4,454
Baltimore, Maryland, USA
zzyzzx Offline
zzyzzx  Offline
Joined: May 2012
Posts: 4,454
Baltimore, Maryland, USA
Originally Posted By: mrsilv04
So, is the real problem that there aren't any cold air returns in the bedrooms... so the solution is to cut the bedroom doors shorter, so that air can be pulled from underneath the door, when it is closed?


Seems like a weird thing to complain about. Personally I wouldn't care.

Re: Undercut interior house doors [Re: FirstNissan] #4710336
03/29/18 09:11 AM
03/29/18 09:11 AM
Joined: Dec 2010
Posts: 945
MO
FirstNissan Offline OP
FirstNissan  Offline OP
Joined: Dec 2010
Posts: 945
MO
ZZYZZX- From what i am reading, the issue is if air is not able to circulate properly, it can put too much strain on the HVAC system. Interestingly, there are distinct dark lines under each bedroom door where the carpet is acting like a filter. As a 1st time homeowner, I am being extra cautious about trying to learn as much as I can since I really don't want to screw something up!


2017 Toyota Sienna (Hers)
2017 Toyota Sienna (His)
Re: Undercut interior house doors [Re: FirstNissan] #4710362
03/29/18 09:35 AM
03/29/18 09:35 AM
Joined: Dec 2006
Posts: 8,368
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,368
Illinois
Cutting the bottoms off of the doors is not the solution. It is only a workaround.

You specifically mentioned the air conditioning. Does it have electric baseboard heat?


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: Undercut interior house doors [Re: FirstNissan] #4710528
03/29/18 12:28 PM
03/29/18 12:28 PM
Joined: Apr 2012
Posts: 5,167
MA
Wolf359 Offline
Wolf359  Offline
Joined: Apr 2012
Posts: 5,167
MA
Originally Posted By: FirstNissan
ZZYZZX- From what i am reading, the issue is if air is not able to circulate properly, it can put too much strain on the HVAC system. Interestingly, there are distinct dark lines under each bedroom door where the carpet is acting like a filter. As a 1st time homeowner, I am being extra cautious about trying to learn as much as I can since I really don't want to screw something up!


Well not only that, but if the air doesn't circulate, it will either be too hot or too cold. It's basically like trying to suck through a straw with your finger on the bottom of the straw, it's a lot harder with your finger on it. Same deal with a room that has no circulation. It's going to be trying to blow hot or cold air in, but because there's no return, the hot or cold air can't really get in.

Re: Undercut interior house doors [Re: FirstNissan] #4710543
03/29/18 12:46 PM
03/29/18 12:46 PM
Joined: Oct 2008
Posts: 386
Long Island,nassau county NY
nickaluch Offline
nickaluch  Offline
Joined: Oct 2008
Posts: 386
Long Island,nassau county NY
Smart idea to cut the doors it's cheap and works for the most part. The rooms will b more comfortable and less strain on the AC blower.


2007 G6 beater.2012 E450 box truck. 2018 Chevy Traverse.2017 E450 box truck.2017 Chevy 3500 extend cargo van.
Re: Undercut interior house doors [Re: FirstNissan] #4710548
03/29/18 12:51 PM
03/29/18 12:51 PM
Joined: Sep 2008
Posts: 9,196
Ontario, Canada
IndyIan Offline
IndyIan  Offline
Joined: Sep 2008
Posts: 9,196
Ontario, Canada
Did the guy find anything else? If the house has a finished basement I hope he spent lots of time down there, in the attic, and utility room.


07 Focus ZXW, 5spd manual, 210km M1 5W30
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