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Roof panels

  • 1.  Roof panels

    Posted 08-14-2020 16:17
    In 1961 I designed a home using 2'x8'x2" thick prefabricated roof panels.  They were comprized of a celotex-type fiber material.  They may have been manufactured by Armstrong or Celotex.  They were designed to span 4'.  The interior face was 1/4" thick prefinished plywood.  Initially it had a built-up roof.  This was later replaced with a single-ply roof.  I lived in the home for 42 years with no roof problems.  I am in touch with the current owners and that have not reported a problem.

    In 1967, I designed an office using the same decking which had a prefinished interior surface of a paper linen material.  That roof was covered with asphalt shingles.  Recently, the owners did a re-roof and now have a severe moisture problem.

    I am looking for information about the deck material including the manufacturer.  Also thoughts about the moisture problem.


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    P. Richard Frantz AIA
    P. Richard Frantz, AIA, Architect
    Pottstown PA
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  • 2.  RE: Roof panels

    Posted 08-17-2020 17:29
    I happen to live in a 1956 pre-fab house that sounds like it has a similar roof structure, with the linen ceiling.  (We bought it in 2014, and are in Santa Barbara, CA.)  It currently has a built-up roof with gravel ballast, which I assume is what the original roof was too.  We've had no problems, and I don't have any recommendations, but the product might be called Homosote.  You might search for that term.

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    Patrick Marr AIA
    Patrick Marr, PE, AIA
    Santa Barbara CA
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  • 3.  RE: Roof panels

    Posted 08-17-2020 17:54
    Need lots more info! What kind of moisture problem? Any insulation in the assembly described? Project location (climate zone)? HVAC conditions in space below, etc. I'm sure we would all love to help. Product, as described sounds a little like a competitor to The old "Tectum".

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    Peter Hart AIA
    Peter C. Hart & Associates, Ltd.
    Stamford CT
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  • 4.  RE: Roof panels

    Posted 08-17-2020 18:18
    Tectum roof panels by Armstrong.

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    Ronald Peters AIA
    President
    HistoricStreetscapes PLLC
    Mesa AZ
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  • 5.  RE: Roof panels

    Posted 08-17-2020 18:28
    Right. Owned by someone else, now, I think. Whatever, what is above the Tectum ?



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