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Fiberboard Insulation is available as High Density, Class-E and Regular Density, Class-C. Both products may be used under loose laid and ballasted or mechanically fastened single ply roof membranes. Both may be used as a recovery board separating reroofing from existing roofs. Only High Density, Class-E should be used under fully adhered single ply systems.
Return to Regular and High Density Fiberboard Insulation