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Keystone Flashing System

The Keystone Flashing System is a total approach to permanently protect masonry structures against water damage.

Two Piece Cap Flashing

Keystone’s versatile "2-piece" Cap Flashing is a combination of either 3-way keyed thru-wall, or flat receiver and cap flashing insert.

3-Way Interlocking Thru Wall Flashing

Keystone’s famous "3-way" Thru Wall Flashing mechanically bonds in the masonry joint in all directions.

          Installation Instructions

 

 

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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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