Two-Piece Cap Flashing

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  • Use
    A preformed two piece cap flashing used for counter flashing where flat
    roofs abut rising walls.

    The receiver portion is built in during construction leaving only the locking slot exposed. After installation of the roof, the insert
    member is snapped in place providing a spring like hug against the base flashing. When repair or replacement of the roof is
    required the inset may be removed and reused.

  • Types
    Four receiver types are available to suit most flashing requirements. All have a continuous locking slot and self-aligning tongue
    to assure proper joint alignment. Thru-wall receivers (figs. 2 and 5) have 3/16" high undercut sawtooth ribs at 3" intervals for
    bonding in the mortar bed. The 1" in the wall receiver is for use in existing masonry. Surface mounted receivers are supplied
    with or without sealant flange. The 4" in the wall flat receiver (fig. 1) is for use in areas where mortar bonding is not required.
  • Gauge/Sizes
    Available in .015", or .018" type 302/304 stainless steel or Terne Coated Stainless Steel; 16 oz. plain or lead coated copper
    and aluminum with .025" receiver and .032" insert. 

    Three way bond type receivers are available in widths from 4" to 32" from the wall. All receivers have an interlocking end lap
    and lay up 48" on the wall. Insert members are supplied 51" long to allow for a 3" end lap and 48" lay up.
  • Installation 
    THRU-WALL RECEIVER: Extend through the wall and turn up 2"or terminate with a 1/4" hook dam. Set with a thin bed of
    mortar below and above with care taken to insure the mortar completely fills the bonding keys.

    SURFACE MOUNTED RECEIVER: Secure receiver to wall with fasteners at 10" centers. Type of fastener depends on
    surface to which flashing is to be applied. Unless upper portion of receiver is to be covered with stucco or siding, the sealant
    flange is to be filled continuously with a high grade sealant.

    1" IN THE WALL RECEIVER: Saw cut existing wall to a depth of 1". Install receiver in saw cut, secure with lead wedges 10"
    on centers and apply a continuous bead of high grade sealant.

    4" IN THE WALL FLAT RECEIVER: Receiver extends 4" into the wall and terminates with a 1/4" hook dam. All receivers
    should be installed a minimum of 6" above the top of the cant strip.

    CAP FLASHING INSERTS: The cap flashing insert member is installed with an upward push into the vertical locking slot
    where thumb nail notches hold it securely in place.
  • Specifications
    Cap flashings in walls where flat roofs abut shall be two piece type as manufactured by Keystone Flashing Co., Philadelphia,
    PA. Receiver shall be formed of (gauge/material) with a special vertical locking slot that requires no malleting or bending to
    hold the insert member in place. Combination receivers and thru-wall flashing shall have 3/16" high undercut sawtooth ribs at 3"
    intervals to provide a mechanical bond in the mortar bed in all three directions. The insert members shall be formed of
    (gauge/materials) and designed to snap lock into the receiver portion and provide a spring like hug against the base flashing.
    Thru-wall receivers shall be set with a thin bed of mortar below and above. Install counter flashing insert members with end
    joints lapped 3".

 

 

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Two Piece Cap Flashing Specifications

Cap flashings in walls where flat roofs abut shall be two piece type as manufactured by Keystone Flashing Co., Philadelphia,
PA. Receiver shall be formed of (gauge/material) with a special vertical locking slot that requires no malleting or bending to
hold the insert member in place. Combination receivers and thru-wall flashing shall have 3/16" high undercut sawtooth ribs at 3"
intervals to provide a mechanical bond in the mortar bed in all three directions. The insert members shall be formed of
(gauge/materials) and designed to snap lock into the receiver portion and provide a spring like hug against the base flashing.
Thru-wall receivers shall be set with a thin bed of mortar below and above. Install counter flashing insert members with end
joints lapped 3".

3-Way Thru-Wall Flashing Specifications

Cap flashings in walls where flat roofs abut shall be two piece type as manufactured by Keystone Flashing Co., Philadelphia,
PA. Receiver shall be formed of (gauge/material) with a special vertical locking slot that requires no malleting or bending to
hold the insert member in place. Combination receivers and thru-wall flashing shall have 3/16" high undercut sawtooth ribs at 3"
intervals to provide a mechanical bond in the mortar bed in all three directions. The insert members shall be formed of
(gauge/materials) and designed to snap lock into the receiver portion and provide a spring like hug against the base flashing.
Thru-wall receivers shall be set with a thin bed of mortar below and above. Install counter flashing insert members with end
joints lapped 3".

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Copyright 1999 Keystone Flashing Company, Inc.