Small, tunnel-like raised areas over underlayment joints. They are approximately 1/4" wide and similar in cause to tunnels.
An upward, tenting displacement of a roofing membrane, frequently over an insulation joint.
(1) An upward, "tenting" displacement of a roof membrane, frequently occurring over insulation joints, deck joints and base sheet edges; (2) Membrane defect characterized by upward displacement of the membrane, usually over insulation board joints. See BUCKLE, CRACK, PICTURE FRAMING and WRINKLING.
an upward, "tenting" displacement of a roof membrane, frequently occurring over insulation joints, deck joints and base sheet edges. Generally associated with improper application. (See picture framing)
An uneven joint between sheets of drywall, usually resulting from expansion and contraction caused by excessive humidity.