English

Noun

picture framing ‎(uncountable)

1. (now rare) The materials needed to construct a picture frame.
2. The act of setting a painting, photograph etc. in a frame.
3. (roofing) A square or rectangular pattern of ridges in a roof membrane or covering over insulation or deck joints.
   • 1989, H.L. Simmons, Repairing And Extending Weather Barriers, page 97:

     When ridges occur along both longitudinal and transverse joints, outlining the insulation boards, the pattern formed is known as "picture framing"

   • 1996, Charles William Griffin, ‎R. L. Fricklas, Manual of low-slope roof systems, page 258:

     The staggered grid pattern is sometimes called "picture framing," a phenomenon generally limited to smooth-surfaced membranes with asbestos felts

   • 2006, C.W. Griffin, ‎Richard Fricklas, Manual of Low-Slope Roof Systems: Fourth Edition:

     When they also appear above the transverse insulation-board joints, the pattern is called picture framing