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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