Parapet Flashing

Function

It is important to install flashing at the parapet in two key locations: 1) under the coping stone, and 2) at the roof line. Installation of flashing under the coping stone prevents water infiltration at joints in the coping stone. Installation of flashing at the roof line can prevent warm moist air from the lower wall filling the parapet cavity. The parapet will go through more freeze-thaw cycles than lower walls as parapets are exposed on both sides. Particularly in cold climates, the moist air in the parapet will cause significant freeze-thaw damage.

• Integrating Parapet and Roofing Flashing

Parapet Flashing Types

Flashing materials include sheet metal (copper, galvanized steel, stainless steel, aluminum, lead), EPDM (ethylene propylene diene monomer rubber), plastics and asphalt impregnated membranes. Self-adhesive membranes are popular with many masonry designers and provide adequate durability for many applications. Copper, stainless steel, and lead flashing are used in buildings where the designed service life is measured in hundreds of years.

Companies Offering Flashing

Company	City	State
PROSOCO, Inc.	Lawrence	KS
Hohmann and Barnard, Inc.	Hauppauge	NY
Advanced Building Products, Inc.	Sanford	ME
Mortar Net Solutions	Portage	IN
Crown Masonry & Construction Materials, LLC	Kansas City	KS
Mutual Materials Company	Bellevue	WA
Premier Masonry & Building Supply, LLC	Martinsburg	WV
Acme Brick Company	St. Rose	LA
Chicago Block and Brick, Co.	Mundelein	IL
Gagne & Son Concrete Block	Belgrade	ME
Glenwood Mason Supply Co., Inc.	BROOKLYN	NY
MASONPRO, Inc.	Northville	MI
Masonry Accessories, Inc.	Orlando	FL
Thompson Building Materials, Inc.	San Diego	CA
Tucker-Kirby Co.	Charlotte	NC
Waldo Bros. Company	Boston	MA
Keene Building Products	Mayfield Heights	OH