Roof Counter Flashing Definition

A metal used at the edges of a roof.

Roof counter flashing definition.

Copyright 2003 by mcgraw hill companies inc. Counterflashing is the piece of metal that is applied to the masonry wall designed to shed water off of the wall and down onto the roof surface. Flashing is the corrosion resistant metal applied to a roof at the edges of walls or chimneys. Counter flashing should be installed after the base and step flashing have been installed between the roofing material and the exterior wall.

This term can be used in different scenarios however it generally refers to a waterproofing detail that is located along a roof edge over a window or door or any other area that will require waterproofing. Counter flashing see cap flashing. The term reglet flashing refers to an installation method for counter flashing not a separate layer. Pipe flashing pipe boot vent boot pipe flange a product used where pipes penetrate roofs.

Cupola a structure rising above the main roof. Counter flashing is the final layer of a three part waterproof barrier installed between a roof and a vertical wall or chimney. A strip of sheet metal in the form of an inverted l built into a vertical wall of masonry and bent down over the flashing to make it watertight. A strip of sheet metal often built into masonry and turned down over other flashing.

Counter flashing cap flashing covers a base flashing. The base flashing is installed first followed by interlaying the step flashing between each layer of shingles. Counterflashing also referred to as cap flashing is the first line of defense against water infiltrating your building. It is used for roof to wall flashing.

Used to prevent water from entering the joints and the exposed upturned edges of base flashing on a roof. These edges are known as eaves roof edges that extend beyond the exterior walls of the home and valleys the low angled areas that are formed where two sloping roof planes intersect and form a seam. It is usually ornamental but may be used for. Step flashing is a rectangular piece of flashing bent 90 degrees in the center.

Cricket a small peaked saddle constructed on the top of the basic roof and behind the chimney. That slips under the actual flashing. Mcgraw hill dictionary of architecture and construction. A cricket is generally not required.

The first two layers are called base flashing and step flashing. Chimney flashing a general term for flashing a chimney. Counter flashing normally consists of the same material that makes up the primary flashing of the component. Course a horizontal unit of roofing running the length of the roof.

Step flashing soaker base flashing pieces of flashing material which overlap each other in steps.