Install 3-Way Interlocking Thru-Wall Flashing

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  • Installation Instructions

    (1) Place a thin bed of mortar on the surface to prepare it for placement
    of flashing.

    (2) Set flashing on the mortar and push the metal down into the mortar bed, thus filling the keys. In setting the flashing, always
    work from LEFT TO RIGHT. When pushing the flashing into the mortar, make sure the end keys of each piece overlap to
    ensure the interlocking feature of the flashing system.

    (3) The flashing should be secured to the substrate backing (or in the case of block back-up, the flashing should be turned
    down, into the horizontal joint).          
                       
    (4) To prepare for the first layer of brick, a thin bed of mortar should be placed on the flashing surface.

    (5) The brick should be placed on the mortar and tapped down to make sure the mortar is pushed into the flashing keys and
    forms an integral bond between the brick and the flashing.

    (6) The mason then continues the accepted procedure for building up the brickwork.

                        

 

 

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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.