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Old 01-31-2012, 07:52 AM   #1
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Subfloor on concrete.


I have a carport and a bonus room/workshop that is attached to my home by the roof but not any of the exterior walls. I am going to be attaching the workshop and building out the carport so that it is part of the house. I am on a slab foundation in the Indianapolis area.
My problem is the flooring in the carport. There is a 3" rise from the carport to the house. I have thought of using a DriCore type system but that would still leave me roughly 2" difference in height. Any ideas on how to finish the floor so it is flush with the house? Thanks

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Old 01-31-2012, 08:11 AM   #2
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Subfloor on concrete.


Some pictures would sure be nice.
You can install what's called sleepers. It's framed in floor joist out of pressure treated wood set over a vaper barrier.
More the likly that old slab will have a taper to it and be unlevel so this has to be shimed to account for that.

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Old 01-31-2012, 11:02 AM   #3
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Subfloor on concrete.


I would check to see if a permit is required for this future conversion. Most carports have just a 3-4" concrete slab, with no footings under the outside edges to support a load-bearing wall. It may be easier to pour a new slab with a thickened perimeter and a plastic vapor barrier under it to stop the rising damp. Carport roofs are not designed as house roofs, you will probably need to make a few changes there, also (insulation, ventilation, structural). Then there is wiring, heat and ventilation, egress, etc. Be sure to leave the "paper trail" for your H.O. Insurance carrier in case of future claims and if you ever decide to sell. (So that you won't be required to rip it all out and can list it as "living space".

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