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Another "What is this?".

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Thirty-two years in the trade and this was the first time I've ever seen this.  Every vent in the attic of a 1928 house in Berkeley had a 3" strip of linen neatly wrapped around the pipe and secured with a piece of cotton twine.



My stupid cat figured it out before I did - can you?
8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

Two btu per sq ft for degree difference for a slab

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  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
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    Condensate evaporator???

    Bad flashing interceptor??



    Cat claw cleaner??



    Just guessing...



    ME

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  • bill_105
    bill_105 Member Posts: 429
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    I got it!

    It's to cut the noise down when rain hits the cap. Or not! Ask the cat.
  • Duff
    Duff Member Posts: 61
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    agree with Mark

    to stop condensate
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
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    But if it were a condensate evaporator, it'd have to be on the IN side of the pipe, and that probably wouldn't work very well....

    Hmmmmm.....



    Quoth the homeowner, It only leaks when it's a driving rain... As long as its a steady down, straight down rain, it's OK....:-)

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  • Jr_12
    Jr_12 Member Posts: 38
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    my house

    I had this in my house when I bought it. Evidently the roof leaked at one time and the water would run down the pipe into the "moisture dissipater"...aka a rag
This discussion has been closed.