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Thinking about adding a room in the attic...

Posted on 9/10/24 at 7:59 pm
Posted by jeffsdad
Member since Mar 2007
23400 posts
Posted on 9/10/24 at 7:59 pm
It already has floorboard. Probably about 400 sq feet. Would have to add stairs, heavily insulated ceiling and walls. Been told I'd need a separate AC.. I'm only considering it really for the additional sq footage when we ever sell the house (eventually). Someone said i'd have to add a "window", (forgot what its called) so include that. Good carpet.

Can anyone give me a guesstimate on costs, or any suggestions?
Posted by LSUengr
Baton Rouge
Member since Sep 2005
2471 posts
Posted on 9/10/24 at 8:26 pm to
Confirm that the joists are sized for the load you will place on them even though it has floor board. Normal joist span doesn't consider a second floor unless it was planned ahead of time. Furniture loads and any other loads need to be considered. The joists at a minimum would likely need to be sistered. We did my buddies attic about 20 years ago and just sistered the joists and it still stands today, but not all turn out that way.
Posted by 9rocket
Member since Sep 2020
1434 posts
Posted on 9/10/24 at 10:18 pm to
Second on sistering the joists like the engineer said (at a minimum)
Not likely they were designed to support the load of a second floor room.


quote:

(forgot what its called)
egress
Posted by Dandaman
Louisiana
Member since May 2017
768 posts
Posted on 9/10/24 at 10:34 pm to
Think he means “dormer”
Posted by Dandaman
Louisiana
Member since May 2017
768 posts
Posted on 9/10/24 at 10:35 pm to
Cost = 75k
Posted by Spankum
Miss-sippi
Member since Jan 2007
58518 posts
Posted on 9/10/24 at 10:51 pm to
I wouldn’t do it, unless you will actually use the space. I have got a bonus room above my garage, and no one ever goes up there. Also, the cooling problems are a real thing.
Posted by 9rocket
Member since Sep 2020
1434 posts
Posted on 9/11/24 at 7:11 am to
Dang. Now that I think about it, you are probably right.
Posted by xBirdx
Member since Sep 2018
1196 posts
Posted on 9/12/24 at 12:09 pm to
I wouldn’t do it for resale value…is their enough height up there. Probably a lot of work, and will be costly.

You may get an extra $10k out of it when selling… would that be worth it?
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