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Fesco® Board

Johns Manville Fesco® Board is a homogenous insulation board, composed of expanded perlite, blended with selected binders and fibers. The expanded perlite contains air cells which provide superior insulating efficiency. The top surface of the board is sealed with a special TopLoc® coating to prevent excessive absorption of asphalt during the installation process. Fesco Board meets the physical requirements of ASTM C 728.


Fesco® Board

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