Do you need counter flashing over step flashing?
We install counter flashing on brick/masonry walls above the roof surface to cover the top of other flashing, such as step flashing. This directs the flow of water away to prevent leaks. Flashings should always overlap so water does not run behind the top of the flashing and get into the building.
Does counter need flashing?
Counter flashing is very important anywhere you have brick on a home. This is usually on the roof and chimney areas. With this in mind, sometimes it is not installed or it wears out quickly and needs replacing. In general, the idea is to always keep water outside of the home.
What does counter flashing mean?
Definition of counterflashing : 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.
Should flashing be under shingles?
All shingle manufacturers require step flashing at sidewalls for both asphalt, wood and slate. If you see continuous, one-piece flashing like this used as sidewall flashing with shakes, shingles or slate, it’s a defective installation, no matter how often you see it.
How do you attach flashing to wood?
Install a tube of construction adhesive in a caulking gun. Apply a generous amount of adhesive along the back of both fins of the flashing. Reposition the flashing at the deck-to-wall intersection and align the cuts at the lower edge with the sides of the corresponding joists. Press the flashing firmly into place.
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.
Does roofing felt go under flashing?
Installing roof drip edge flashing properly The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge. This lets any water that gets on the roof run down the underlayment and over the drip edge.
Is aluminum flashing easy to bend?
The metal used for flashing is so thin that it’s super easy to bend by hand or with the help of some basic hand tools.
How far apart should base flashing cleats be?
The lower edge is hemmed and laps the base flashing and is formed to be a snug fit against the base flashing. The base flashing is fastened to the roof with cleats spaced a maximum of 12″ apart.
How do you install coping and base flashing on a wall?
The combined base and coping flashing must be installed to provide positive drainage away from the new wall. Its lower edge should be formed into a drip, either by projecting out over the wall as shown here or by introducing a bent drip edge as shown in Detail 9.3J.
Where to use Counterflashing on a roof?
Counterflashing 9.2. Counterflashing Description: Copper flashing is used wherever a wall intersects a roof. Such a system usually consists of copper counterflashing and base flashing in conjunction with roof composition flashing or coping.
What is base flashing and Counterflashing?
Such a system usually consists of copper counterflashing and base flashing in conjunction with roof composition flashing or coping. The counterflashing diverts water to the base flashing, which, in turn, diverts it to the composition flashing. The base flashing is designed to accommodate building movement.