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-   -   Attic crawl space door (http://www.diychatroom.com/f104/attic-crawl-space-door-197287/)

liquid6 03-04-2014 04:33 PM

Attic crawl space door
 
I have a bonus room over my garage and there is a small closet in that room. Inside that closet, there is a piece of plywood covering the crawl space that goes around the exterior of that room. I would like to be able to replace that plywood with a door and I'm looking for input how to fix this.

1. Could I just buy a pre-hung door and cut it and install it that way? I'm assuming this would be the easiest way; but I'm also concerned about the ability of that door to insulate the room from the crawl space.
2. Build my own jam and hang my own door? I have no idea how to do this.

What type of door would you recommend?

mako1 03-04-2014 04:43 PM

Dimensions would help.Pics would be better.
Any door would be better "insulation" that the piece of plywood that is thee.
You don'r want to buy a hollow core prehung fo this.
We need more information to be of much help.

liquid6 03-04-2014 04:46 PM

I'm at the office. Will get some dimensions and pics when I get home.

joecaption 03-04-2014 05:30 PM

Once the plywood's gone there's going to have to be a 3/4 thick floor installed, walls built, insulation, house wrap on the backside to stop wind wash, sheetrock on the walls.
Google "knee wall door" lots of company's make them.

liquid6 03-04-2014 09:25 PM

I didn't take any photos as it is a finished space, I didn't that they were necessary. The rough opening is 26.75" wide by 46.5" tall with the bottom plate of the wall still in place.

joecaption 03-04-2014 09:33 PM

Opening gets reframed and the bottom plate just gets cut out.
Going to need at least a 2 X 4 header.
Find the door first then do the framing.
Rough opening is 2" wider then the door size and about 1" taller.

liquid6 03-04-2014 09:36 PM

So I should be looking for a knee wall door? Also, I'm assuming the door should be in the neighborhood of 24" wide and 48" tall?

Seems easy enough. Where would be the place to source a knee wall door?

joecaption 03-04-2014 09:43 PM

Any real lumber yard can order you one.
Google "knee wall door".
24" is pretty small.
32" is a standard size.
It's called a 2-8 door. (2 ft. 8")

liquid6 03-10-2014 10:11 AM

Got this installed today. My local construction supplier had a 2/0 4/0 door. With some scabbing on the jack studs and cutting the bottom plate out, the door slipped right in. However, getting the square jam in a not so square hole was a bit of a headache. I added some "great stuff" and I can already tell a difference in the room.

Now to trim and paint.

https://fbcdn-sphotos-f-a.akamaihd.n...93005112_n.jpg

Windows on Wash 03-11-2014 01:53 PM

Looks decent. Scab some rigid foam to the outside of it with the foil facing outward.

That hollow door isn't that well insulated.

liquid6 03-11-2014 02:16 PM

I don't think it is a hollow door. It feels solid to me. However, I thought about putting this on the back of the door and the back of the walls inside the crawl space. Any one have any experience with Enerflex?

http://www.homedepot.com/p/Enerflex-...5360/202088284

HomeSealed 03-11-2014 04:36 PM

Radiant barrier is snake oil, don't bother. As WoW said, for best insulation glue some rigid foam board to the back of the door and also add weatherstripping for a tight seal.... I'm late to the party here, but the same effect could have been accomplished by fitting the plywood with a couple of hinges and a latch, to go with the insulation board and weatherstripping similar to the way a regular attic hatch is sealed.... I will say though that the little door gives it a nice fit and finish.


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