Sandell Manufacturing Company, Inc. Branch Office: 
Pre-Formed Metal Flashing Flashing can be composed of various materials that include stainless steel and copper. These various characteristics complement flashing by enhancing the materials performance, durability and longevity. When a heavier flashing is necessary, Sandell®’s Pre-Formed Metal Flashing is the proper choice for moisture protection. 
Mechanically Keyed Flashing
This product’s unparalleled design has the ability to bond in three different directions as it resists water and caustic compounds with unfailing performance. Sandell®’s Mechanically Keyed Flashing forms an interlocking barrier within the mortar bed that provides extensive protection and defies moisture penetration. 
Pre-Formed Metal Flashing
Sandell®’s Pre-Formed Metal Flashing is among the most durable flashing material available. Whether it is annealed stainless steel or copper, both provide an excellent moisture barrier with exceptional chemical resistance. The exclusive pre-formed shape and ready-made lengths render watertight installation. Sandell®’s Pre-Formed Metal flashing is noted for its unchallenged ability to deflect moisture permanently. The design of the flashing is always unique and specific to the customer’s requirements and it can be custom-made to any order. The determination of the gauge, angles, bends, dimensions, type of material and length are all the customer’s discretion. Crafted with such precision, the ease of use is apparent upon installation and the application requires no sealant or solder - except under certain conditions. Use -Sandell®’s Pre-Formed Metal Flashing was created to insure moisture protection in masonry structures. It should be used at floor levels, beneath sills, over lintels, continuous at spandrel beams, beneath copings and elsewhere as mandated. Type -Mechanically keyed flashing with 3" intervals provides a bond in the mortar bed, in three different directions, creating a watertight seal without the use of solder or sealants -(except under certain conditions). The tri-level design in the mechanically keyed flashing allows moisture to exit the structure quickly and uninhibited. Gauge/Sizes -Mechanically keyed flashing is available in Stainless Steel, Copper, and Lead Coated Copper. Concealed flashing applications such as floor levels, sills, lintels and spandrel beams use 22, 26, 28 Gauge Stainless Steel or 10 oz., 12 oz., 16 oz., or 20 oz. Copper. When flashing is exposed use 22, 26, 28 Gauge Stainless Steel or 10 oz., 12 oz., 16 oz., or 20 oz. Copper, 16oz. Lead Coated Copper. Sandell®’s Mechanically Keyed Flashing is manufactured in easy to install lengths. It is available in 88” sheets in Copper, Stainless Steel or Lead Coated Copper. Installation -Concealed flashings should be installed at 1/2" from the exterior face of the wall, continuing through the wall, carrying up one course of brick. The flashing should then terminate with a 2" bend at the top, in a step formation. Upon installation flashing should be overlapped no less than 1-1/2 ”. Where a bend is not possible, flashing should be terminated, sealed and secured to the substrate. If there is a backup wall composed of block, the flashing should be inserted into the horizontal joint. It is recommended that lintel and sill flashings continue at least 4" further than the jambs of the opening. Installation of flashing at spandrel beams should continue throughout. When encountering a vertical shortcoming, the flashing should be directed upward a minimum of 2" and then secured with mastic. The mechanically keyed flashing should be laid in a fresh layer of mortar and then pressed down into the mortar bed to secure and seal the mechanically keyed interval. Flashing should then be topped with an additional slurry of mortar, in preparation to receive the course of brick. Specifications -Thru-wall flashings shall be mechanically
keyed as manufactured by Sandell® Manufacturing Co., Inc. Mechanically
keyed flashing shall be manufactured so it has the ability to bond in three
different directions, interlocking together to provide a seamless and continuous
flashing application.
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