Wall And Concrete Flashing

Weeps spaced a maximum of 24 o c.

Wall and concrete flashing.

The house exterior wall terminates at a concrete slab over a basement without proper sealing. Most residential wall flashing today is made from light gauge aluminum coil stock. Aluminum is inexpensive easy to bend and holds paint well. Water damage from splashback is common in wall areas lo cated.

If metal is to be used as flashing stainless and galvanized steel are better choices. In this rogue episode matt will show you a method to waterproof this very tricky transition between a wall and flat concrete slab. For cavity walls as illustrated in figure 1 the cavity typically ranges from a minimum of 2 in. However it tends to oxidize and pit in salty or polluted air and if unpainted will corrode from contact with masonry due to the lime and acids.

Another method of flashing a concrete wall is to cast the cap flashing into the wall. Water leaked into the basement space that extends below the ecxterior slab below right. The cap flashing is attached to the base flashing by blind riveting. In wall areas frequented wetted by splashing rain splashback or snow buildup flashing membranes up to 36 inches wide can be used to protect the wall sheathing and structure.

Though there was wall bottom flashing wind blown rain or melting snow can send water back up under the flashing s near flat lower extension onto the slab. 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 the design of its individual components. Tek 19 5a flashing details for concrete masonry walls ref. This detail can be used on either a sloped or a flat roof.

Flashing details for concrete masonry walls introduction. Under the eaves of a roof with little overhang and no gutters. Through wall flashing is used at all points where moisture may enter the wall and in selected places particularly susceptible to water damage. As for the basic question of what types of flashing can be used with concrete and masonry heckmann building products which makes flashing for masonry construction recommends against using aluminum as flashing with brick or concrete.

Aluminum cannot be soldered. 3 includes such details. An alternate base flashing fastening method is to use cleats spaced at 12 o c.