Yes the purpose is to equal height the floors. Also to fill the span of 12 feet. Footers are to code. Water is not a problem. I like the idea of rigid insulation. Expensive alternative to pink.No said:Is the purpose of the 2x8s to make the floor an equal height to the interior? I would be more concerned about the suitability of the slab to support the structure. Is there a suitable footer? If there is I would leave the step down. Put pressure treated sleepers on the slab, rigid insulation between the sleepers. I would not vent it to basement. I would make sure that the grade will take away all water.
Has anyone used this airkrete stuff?TP said:We have back porch built on a 4” concrete slab. I would like to enclose it and make it a storage room. It has a 7” step down from the house floor. I was thinking of just covering it with plastic 6mil, putting 2x8 (and shims) across. Put some fiberglass (Upstate NY) insulation and nail sub-floor, done. Then I got wondering if I should vent it to my basement. What would be the recommended way of raising this floor and avoiding rot?
Thanks
TP
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