Standards for Surface Texture Used by the SPF Industry

Abstract

Figures Al-A8 show standards of SPF surface texture as agreed by the industry. Acceptable surfaces range from smooth [Figure (A1)J, orange peel [Figure (A2)] and coarse orange peel [Figure (A3)]. Verge ofpopcorn [Figure (A4)] is marginally acceptable. Popcorn [Figure (A5)],Treebark [Figure (A6)] are not acceptable for roofing applications and Pmholes [Figure (A7)] or Rippling [Figure (A8)] indicate problems which must be corrected.