2″ rigid foam perimeter
Hello all!! I have a slab addition project. I have covered the entire area with 2″ rigid foam all the way to the foundation walls. The foundation walls (about 3′-4′ high) are also vertically insulated with 2″ rigid foam to the footing. (extruded polystyrene)
I am getting ready to cover the 2″ rigid XPS slab with white poly plastic 6 mil. and over the foundation walls. After that I need a short vertical piece of 2″ rigid foam on the perimeter sitting on the plastic and have to “snap concrete grade lines” on it. I can not snap lines on the plastic sheeting. The pour stops 1 1/8″ from top of foundation wall. The short vertical 2″ rigid foam (about 5″ high) will not be covered in plastic in order to be protected from the concrete with superplasticizer. Is there a 2″ rigid foam with a protective barrier laminated on to it so the wet concrete can lay against it and I can snap grade lines on it? The concrete foundation wall has a 3″ ledge all the way around. 2″ of rigid foam (vertically) and 1″ left for slab to rest on. I have bolted 2″ aluminum angle iron on the house basement side for slab to rest on. After pour I will cut off excess plastic. Rehash in order:
2″ rigid foam & foundation wall covered in plastic and 5″ vertical rigid foam on perimeter. Thank you.
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