This article series provides details of foundation tops building walls exterior trim wall corners and roof wall intersection flashing to prevent leaks water damage.
Concrete wall flashing.
An alternate base flashing fastening method is to use cleats spaced at 12 o c.
Tek 19 5a flashing details for concrete masonry walls ref.
See figures 3 7.
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.
Another method of flashing a concrete wall is to cast the cap flashing into the wall.
These plates must be made of pressure.
Water can penetrate through transverse joints in the copings or be adsorbed.
Extend the flashing membrane throughout the rough opening and minimum 4 inches onto the face of the exterior wall.
What is the best type of flashing to use with concrete.
Many builders and designers believe that inadequate vapor barriers are the main cause of moisture problems and wood decay in walls.
660 i or masterseal awb 970 fib.
Sole plates or sill plates are the first pieces of framing lumber placed in home construction.
The aluminum flashing shown in horgan.
This detail can be used on either a sloped or a flat roof.
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.
3 includes such details.
Masonry copings copings constructed with stone precast concrete or masonry should not be considered watertight.
For example the crevice between concrete stairs and the foundation is a common entry point.
Each method of flashing rough openings has unique advantages.
Properly installed wall flashing is critical to your building s health.
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.
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.
Copper receiver cast in concrete wall.
The cap flashing is attached to the base flashing by blind riveting.
Bill palmer an engineer and the editor in chief of concrete construction a sister publication of jlc responds.
Pinhole free flashing membrane with a thickness of 12 30 mils.
Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a.
Moisture barrier between the sole plate the concrete slab.
