A ventilation screed comprising an upper attachment flange having a top portion and a bottom portion and at least one opening in the top portion; a drip edge protruding from the bottom portion of the upper attachment flange; a drainage cavity protrusion protruding from the bottom portion of the upper attachment flange above the drip edge, wherein the drainage cavity protrusion has a vertical portion of a L-shaped drainage trough portion and a bottom portion having at least one drainage opening along a meeting point of the upper attachment flange and the drainage cavity protrusion, an upper ground portion in communication with the L-shaped drainage trough portion and a drainage cavity shroud in communication with the upper ground portion, wherein the drainage cavity shroud extends past the drip edge.

A ventilation screed having an upper attachment flange having a top portion and a bottom portion and at least one opening in the top portion; a drip edge protruding from the bottom portion of the upper attachment flange; a drainage cavity protrusion protruding from the bottom portion of the upper attachment flange above the drip edge, wherein the drainage cavity has an L-shaped drainage trough portion having at least one drainage opening in a bottom portion, an upper ground portion in communication with the L-shaped drainage trough portion and a drainage cavity shroud in communication with the upper ground portion, wherein the drainage cavity shroud extends past the drip edge.

A ventilation screed having an upper attachment flange having a top portion and a bottom portion and at least one opening in the top portion; a drip edge protruding from the bottom portion of the upper attachment flange; a drainage cavity protrusion protruding from the bottom portion of the upper attachment flange above the drip edge, wherein the drainage cavity has an L-shaped drainage trough portion having at least one drainage opening in a bottom portion, an upper ground portion in communication with the L-shaped drainage trough portion and a drainage cavity shroud in communication with the upper ground portion, wherein the drainage cavity shroud extends past the drip edge.

A drainage screed includes an attachment flange, a drainage leg, and a lip. With the attachment flange attached at a wall structure, the drainage leg extends from a lower edge region of the attachment flange. The lip extends from the drainage leg at a location along the drainage leg that is between the attachment flange and a distal end of the drainage leg distal from the attachment flange. A first portion of the drainage leg extends between the attachment flange and the lip, and a second portion of the drainage leg extends between the lip and the distal end of the drainage leg. A first drainage hole extends through one selected from the group consisting of the first portion of the drainage leg and the lip. The first portion of the drainage leg extends downward toward the first drainage hole to promote drainage through the first drainage hole.

The present concept is an air communicating trim molding for installation as a baseboard and a casing is of pre-selected longitudinal length and includes a bottom surface, a top surface, and an intermediate surface spaced between the bottom and top surface, wherein the bottom surface abuts against a wall surface in an installed position. An air passageway communicates exterior air into and out of the air passageway, wherein the air passageway includes the space between the wall surface and the intermediate surface and communicate air along the air passageway when the trim molding is in an installed position. The air communicating trim molding includes edge openings wherein the edge openings communicate exterior air into and out of the air passageways. It further includes protrusions of preselected size extending laterally between the intermediate surface and the bottom surface and dimensioned and spaced apart to create the edge openings.