...larsen trusses outboard of my structural 2 x 4 framing. i read an article that was spacing TJIs at 4' oc and ws wondering how big a cavity can be efectively den...
...Larsen Trusses. My house like most in built in the early 1900's, has interior plaster walls with oil paint, 2x4 studs, and is insulated with blown in cellulose....
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