WebNov 22, 2011 · Various materials are allowed for fireblocking. Depending on local codes, this fireblocking material may be as simple as filling the void with paper, rockwool insulation … WebAug 6, 2024 · If you’re using mineral wool as a fire stop material stuffed around wall penetrations, then it IS necessary to compress it since you want to make it as air impermeable as possible. That’s a common requirement commercially and I personally have stuff many, many wads of mineral wool around conduits and cables back when I was an …
Rockwool (Roxul?) for DIY Rim Joist Insulation?
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Fire Stopping: What Every Contractor Needs to Know
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