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Open wall and add door for under stairs storage


mcannon-gso's Avatar
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01-16-06, 01:53 PM   #1  
mcannon-gso
Open wall and add door for under stairs storage

When my house was built there is a big dead space under my stairs. I will be opening the wall to create a storage space. I was wondering what the best type of door would be to use. The access door will be in the garage and I would want it as tight as possible so it does not cause drafts..

Any suggestions ??

Thank you in advance

--Mike

 
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01-16-06, 02:01 PM   #2  
Exterior Fire-Rated Door

Because the door will be between the garage and living space, you will need to use a door capable of providing fire containment should one start in the garage.

Building codes normally require a minimum solid wood door not less than 1 3/8th inches thick; A solid or honeycomb steel door not less than 1 3/8th inches thick; or a 20-minute fire rated door.

A flush insulated pre-hung steel door with a U-.35 or lower would serve both insulating and firestopping requirements

You will also need to install drywall on all interior sides of the 'closet' including fastened directly under the stairs for firestopping.

 
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01-16-06, 03:22 PM   #3  
mcannon-gso
Thank you for the advise.

I was planning on drywalling the inside and under stairs after I insulated them.
My only grey area is the door. This door will be a smaller than usual entry door and I would need one in the right size or one that I can cut down..

Any suggestions on the type of door that i can cut and still have the fire rating necessary ??

 
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01-16-06, 04:49 PM   #4  
Posted By: mcannon-gso Any suggestions on the type of door that i can cut and still have the fire rating necessary ??
Fiscaly, you'll want to use a "BOOK" (standard door), door and preferably a unit door and jamb because they are rated as such with the approved gasket.
Short of that you can purchase solid, rabbited, jamb stock, a solid core wood door, a gasket kit and a self-closing device. The problem with "cutting" a rated door is that the wood frame which contains the "fill" material, is part and parcel of the rating.

Use 5/8" drywall under the stairwell, if it is not already.

 
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