Counter flashing is the final layer of a three part waterproof barrier installed between a roof and a vertical wall or chimney.
Roof counter flashing definition.
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 cap flashing covers a base flashing.
The base flashing is installed first followed by interlaying the step flashing between each layer of shingles.
It is usually ornamental but may be used for.
Step flashing soaker base flashing pieces of flashing material which overlap each other in steps.
Copyright 2003 by mcgraw hill companies inc.
Chimney flashing a general term for flashing a chimney.
The term reglet flashing refers to an installation method for counter flashing not a separate layer.
Definition of counterflashing.
Course a horizontal unit of roofing running the length of the roof.
The first two layers are called base flashing and step flashing.
A strip of sheet metal often built into masonry and turned down over other flashing.
It is used for roof to wall flashing.
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.
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.
Pipe flashing pipe boot vent boot pipe flange a product used where pipes penetrate roofs.
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.
Placed opposite to base flashing or above base flashing counter flashing completes the two part team.
A metal used at the edges of a roof.
Mcgraw hill dictionary of architecture and construction.
Flashing is the corrosion resistant metal applied to a roof at the edges of walls or chimneys.
That slips under the actual flashing.
Counterflashing also referred to as cap flashing is the first line of defense against water infiltrating your building.
Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
Counter flashing is the opposing piece of metal aluminum fabric etc.
Cupola a structure rising above the main roof.
Counter flashing should be installed after the base and step flashing have been installed between the roofing material and the exterior wall.
Counter flashing see cap flashing.
