Flashing Concrete Block Wall

Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a.

Flashing concrete block wall.

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. Tek 19 5a flashing details for concrete masonry walls ref. An alternate base flashing fastening method is to use cleats spaced at 12 o c. Applicable in all cmu wall flashing locations including base of wall parapet walls and above bond beams wall openings and structural steel members.

In this rogue episode matt will show you a method to waterproof this very tricky transition between a wall and flat concrete slab. Filled the concrete gap and made a copper door sill pan and l flashing back to the concrete level. Metal roof flashing can be use to seal gaps between roof walls. This flashing membrane should be upturned on the interior side of the wall so as to catch and drain the water outward and extend out of the exterior side of the wall.

As walls heat up some membranes don t hold their shape and can actually become deformed in the cavity this allows moisture to remain trapped instead of proper evacuation with the air barrier installed. Footers for block walls consist of a footing trench steel reinforcement rods rebar and concrete. Cuts labor and material costs associated with using membrane flashing in a multi wythe course by approximately 50. Putting the flagstone back now and will add a final piece of copper l flashing below the door sill trim piece western red cedar primed painted on six sides and will leave about an 1 of clearance between the trim siding also wrc.

The size of the trench and diameter of the rebar depends on the purpose for the wall such. Exterior wall flashing the other reason for the joist flashing is to catch any moisture that is draining down within the wall and direct it outward away from the building. 3 includes such details. The cap flashing is attached to the base flashing by blind riveting.

It is commonly used in two story and side split houses. Another method of flashing a concrete wall is to cast the cap flashing into the wall. Copper receiver cast in concrete wall. This detail can be used on either a sloped or a flat roof.

Metal roof flashing is a galvanized sheet metal bent at right angles with about eight to 12 inches on each side of the angle.