Monolithic slab with foam and rain – floating problem?
Hi, I am in Zone 4a (Nashville area) and it is a VERY rainy area.
I within weeks of forming and pouring a monolithic slab. Since I am a DIY builder, it is a SLOW process.
I will be digging into the pad I have formed for the edge beam. Once the 4″ gravel base is in, it will be covered with 3″ of recycled 25psi XPS that I acquired. 2″ of foam will wrap under the footer/beam and run up the exterior.
I am concerned about rain water ponding in the footer and lifting the foam up from buoyancy.
What solution is used to prevent this besides pouring right away as I cannot operate that fast.
I thought I might trench out at footer/beam depth so the footer/beam hole acts as a rain gutter.
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