Concrete Wall Flashing

Masonry copings copings constructed with stone precast concrete or masonry should not be considered watertight. Although ﬂashing is the primary focus of this tek it should be understood that the role of vapor retarders air barriers and insulation are also important elements to consider for any wall design as the performance of the entire system can be dependent on. Sole plates or sill plates are the first pieces of framing lumber placed in home construction.

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This detail can be used on either a sloped or a flat roof.

Concrete wall flashing.

For example the crevice between concrete stairs and the foundation is a common entry point. Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a. Tek 19 5a flashing details for concrete masonry walls ref. These plates must be made of pressure.

3 includes such details. What is the best type of flashing to use with concrete. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. Copper receiver cast in concrete wall.

Each method of flashing rough openings has unique advantages. Additional information for flashing single wythe walls particularly architectural concrete masonry walls and means for providing a higher level of structural continuity at ﬂashings is contained in tek 19 2a ref. Seeing doug horgan s photos of corroded aluminum flashing in repairing a stone patio over a living space jul 16 left me concerned about using metal flashing with concrete. Bill palmer an engineer and the editor in chief of concrete construction a sister publication of jlc responds.

This article series provides details of foundation tops building walls exterior trim wall corners and roof wall intersection flashing to prevent leaks water damage. If the window or door is near the base of the wall the flashing should form a continuous envelope and be connected to the adjacent wall flashing. Extend the flashing membrane throughout the rough opening and minimum 4 inches onto the face of the exterior wall. See figures 3 7.

Moisture barrier between the sole plate the concrete slab. Many builders and designers believe that inadequate vapor barriers are the main cause of moisture problems and wood decay in walls. The same problem occurs where a raised porch. An alternate base flashing fastening method is to use cleats spaced at 12 o c.

A wall or siding needs special detailing to prevent leaks and damage where the wall encounters any horizontal surface such as a foundation wall top or a concrete porch slab. 660 i or masterseal awb 970 fib. The cap flashing is attached to the base flashing by blind riveting. Another method of flashing a concrete wall is to cast the cap flashing into the wall.

Pinhole free flashing membrane with a thickness of 12 30 mils. The aluminum flashing shown in horgan. Water can penetrate through transverse joints in the copings or be adsorbed. Properly installed wall flashing is critical to your building s health.