Here is the meaning of plycem: http://www.bomis.com/rings/Mmoisture-roofing-and-siding-pane...
PLYCEM is a noncombustible, structural, fiber reinforced, silicone impregnated cement board. Great for roof sheathing, flooring, and walls. Resistant to rot, insects, and moisture.

www.architecturalproducts.com

And here are the meaning of "fascia" http://www.waynesroofing.com/glossary2.html#f.1
Fascia: a vertical or steeply sloped roof or trim located at the perimeter of a building. Typically, it is a border for the low-slope roof system that waterproofs the interior portions of the building.
This glossary may be helpful to you; unfortunately it does not have the meaning in Spanish.

Saludos afectuosos. Maria ;o)