Concrete block insulation
Hi Martin. First, thank you & fellow GBA posters for providing valuable insight on a variety of topics.
My question pertains to insulating 8″ concrete block that will be used on a commercial single story building along with utility brick in the northern midwest.. The piers will use 6″ block with brick. I have primarily done residential work & do not have a lot of commercial experience.
From what I have read, there are a few choices on insulating the block:
1) the hollow cores can be filled with foam beads
2) the hollow cores can be filled by pumping foam (I’m assuming closed cell?) but restricts drainage
3) install polystyrene inserts like Korfil (helps keep cores open for drainage) & can be grouted
4) forget all of the above b/c the face of the block will exhibit more thermal conductivity negating any benefits of insulating the block’s core so use rigid foam to insulate between block & brick
5) insulate the core & face of the block
6) go with a preinsulated 8″ block such as Omni block (then what do I use on areas with 6″ block?)
The preliminary takeoff (mine) calls for 6,000 8″ block, 1,000 6″ block. Thank you, looking fwd to your thoughts & reasoning.
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