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A note that might be of interest to people thinking of having insulation blown into their roof–30 years ago I had cellulose insulation blown into my roof. That stuff is made from re-cycled newspaper with a chemical fire proofing.

I was always concerned that the fire proofing might wear out over time. This morning I have an electrician working in my top floor bathroom. I took a handful of the cellulose that came out and tried to light it on fire. I was very happy to see that it’s STILL fire proof–it smoldered for a moment and extinguished itself, just as it did when I tested it back in the 70s. Of course my “test” isn’t conclusive and the cellulose insulation being produced now might differ from what was available back in the day, so, although I’m reassured, YRMV