What is a counter flashing?
Counterflashing – Formed metal or elastomeric sheeting secured on or into a wall, curb, pipe, rooftop unit, or other surface to cover and protect the upper edge of a base flashing and its associated fasteners. Your rain boots are the base flashing, and your pant legs are the counterflashing.
Is step flashing the same as counter flashing?
Counter flashing is used on walls and chimneys like step flashing. Unlike step flashing, the piece of flashing is sawed into an existing mortar joint, and the metal comes over the top of the brick. Like step flashing, counter flashing is sometimes installed in a step-by-step method.
Is counter flashing necessary?
Counter-flashing is especially important where walls are brick. Installing headwall and sidewall flashing correctly becomes more time-consuming when the exterior wall covering is brick.
What is counter flashing apron flashing?
The base flashing (or apron flashing) is the bottom piece. Counter-flashing: Placed opposite to base flashing, or above base flashing, counter-flashing completes the two-part team. Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center. It is used for roof to wall flashing.
Where do you install counter flashing?
It is usually made of galvanized steel and directs water away from areas on the roof such as the intersection of the roof and walls. Roofers will install flashing around vents, skylights, and chimneys.
What is counter flashing made of?
Three common metals formed into counter flashing are aluminum, copper, and galvanized steel. Though all three have value, each must be evaluated by their respective positives and negatives by homeowners and contractors. The most commonly used material for counter flashing is aluminum.
What are the different types of flashing?
Common Types of Flashing:
- Continuous flashing: Also known as “apron flashing”.
- Drip edges: Often installed under the roofing felt along the eaves of a roof.
- Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
- Valley flashing: A W-shaped piece of metal flashing.
What is the difference between drip edge and rake edge?
It involves the point of application in relation to the underlayment and/or eaves flashing. At the rake edge, the perimeter drip edge metal is applied over the underlayment with the appropriate fasteners secured every eight (8) to ten (10) inches on center.
What are two types of flashing?