Non-metal roof vents for ventilation in residential and commercial buildings, non-metal screened roof ridge ventilators for use on structures, underlayments for building roofing and siding, non-metallic building materials, namely, spacer sheets for conducting water and vapor between juxtaposed surfaces in a building, exterior residential and commercial thermal and moisture management building products, namely, non-metallic underlayments and wraps in the nature of spacer sheets for conducting water and vapor between juxtaposed surfaces in a roof or wall of a building, self-adhered flashing tape for use in sealing the seams of building wrap membrane products and for waterproofing around window assemblies, non-metal building flashing