Amerimix
CrewTracks
EZ Scaffold Corp.
EZG Manufacturing
Federated Insurance
Fraco USA, Inc.
Hohmann and Barnard, Inc.
Husqvarna Construction Products N.A.
Hydro Mobile, Inc.
iQ Power Tools
Kennison Forest Products, Inc.
Mortar Net Solutions
Non-Stop Scaffolding
Southwest Scaffolding
SPEC MIX LLC
Stabila
Tradesmen's Software, Inc.

Wall Caps

Function

The tops of masonry walls are often the most vulnerable to moisture infiltration, and special care must be taken to design and install a proper wall cap. Wall caps and flashing directly beneath the cap must be impervious to moisture penetration.

Wall Cap Types

Types of parapet caps include stone, cast stone, clay brick masonry, concrete masonry, and formed sheet metal. Parapet caps should slope in towards the roof. All parapet caps (except for sheet metal coping) should incorporate through-wall flashing directly beneath the cap to prevent moisture from saturating the wall beneath. Joints between wall cap elements are often finished with a flexible sealant.

Anchorage

Most situations require stone or masonry wall caps to be anchored to the wall below. Without anchors, wall caps will loosen as the wall below responds to temperature and moisture variations. Anchors are also required to satisfy prescriptive requirements for seismic design, which state that: “component seismic attachments shall be bolted, welded, or otherwise positively fastened without consideration of frictional resistance produced by the effects of gravity” (ASCE (American Society of Civil Engineers) 7-05, Section 9.6.1.2). Anchors may be installed into blind holes in the bottom of coping segments or in mortar joints between units.

“Through the MCAA’s webinars we’re able to keep current in our industry.”

JOSH CRONHOLM
Ammex Masonry, Inc.
MCAA member since 2006

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