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.
What is Counterflashing on a roof?
Counter-flashing is designed to prevent moisture from entering behind the vertical flange of headwall or sidewall flashing. Sometimes, the exterior wall-covering material serves as the counter-flashing, and sometimes a separate counter-flashing might be installed.
What is Reglet and Counterflashing?
A reglet is found on the exterior of a building along a masonry wall, chimney or parapet that meets the roof. It is a groove cut within a mortar joint that receives counter-flashing meant to cover surface flashing used to deflect water infiltration.
What is cant strip?
Definition of cant strip
1 : a beveled strip placed in the angle between a roof and a wall against which the roof abuts so as to avoid a sharp bend in the roofing material. 2 : a strip used under the lower edge of the lowest row of tiles on a roof to give this row the same slope as the rows above it.
How do you flash a chimney?
Complete DIY projects like a pro!
Install front base flashing. Snug this bent end against one side of the chimney front. Install flashing around the chimney. Install the chimney saddle. Cover the base flashing with cap flashing: Saw grooves in the mortar. Drive in the flange. Continue to install cap flashing.
Do you install drip edge before tar paper?
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.
Do all roof valleys need flashing?
Closed valleys aren’t required to have metal flashing, but they should have additional underlayment lining the valley, preferably a couple layers of roll roofing. You can usually see whether this has been done by looking carefully at the bottom edge of the valley.
Is chimney flashing necessary?
Homes with chimneys require more maintenance than homes without. If you’ve recently encountered a chimney leak or noticed rust stains inside your firebox, you may need to repair your chimney flashing.
Does flashing go under shingles?
Flashing should overlap the roof-covering material, but on asphalt shingle roofs, for aesthetic reasons, the part of the headwall flashing that extends down over asphalt shingles is often covered with a course of shingle tabs.
What is drip edge roof?
Drip edge is metal flashing installed at the edges of the roof to keep water away from your fascia and from getting underneath your roofing components. If your roof doesn’t have drip edge, water gets behind your gutters and rots out both your fascia board and roof decking.
What reglet means?
Definition of reglet
1 : a flat narrow architectural molding. 2 : a strip of wood used like a lead between lines of type.
What is a raggle joint?
A groove cut into masonry to receive adjoining material.
Can strips for roof?
The CRCA Roofing Specification manual defines a cant strip as “…a strip of material of triangular section placed at the intersection of a roof deck with a higher wall or other vertical surface.” Cant strips have been, and continue to be widely used as a component of built-up roofing.
What is a cant edge?
DESCRIPTION. CANT STRIP and TAPERED EDGE are a widely accepted, high quality low slope roofing products. Each is durable, lightweight, and environmentally friendly. These components are factory fabricated from BLUE RIDGE FIBERBOARD’s STRUCTODEK insulation board.
What is oil canning on a metal roof?
Oil Canning Defined
Oil canning is a visible, wavy distortion that affects cold-rolled metal products. It’s seen in the flat areas of metal panels, and can be characterized as a moderate aesthetic issue. Typically, the rippling, waviness, or buckling is especially seen in the broad area of a metal roof or wall.
