Flash Parapit Wall To High Roof Wall

The roofing squares are locked into a 20 oz.

Flash parapit wall to high roof wall.

No vapor control layer and thermal bridging everywhere. Many apartments and condominiums have flat sections of roof designed for air conditioning or other roof mounted equipment. With it parapet walls are indicated automatically on the roof sketch as flattened panels similar to an unfolded pizza box. This detail shows a flashing condition at a vertical wall or parapet.

On walls greater than 36 inches high membrane wall flashing sheets are suggested to be strapped i e installed vertically. I recommend 12 in wide step flashings bent for a 5 in. How to attach flashing to a parapet wall. No air control in either the roof assembly or the wall assembly.

The metal flashing shall lap the parapet wall. Copper base flashing which extends at least 8 up the wall. Fasten outside face with continuous concealed clip type fasteners or with two concealed discontinuous clips or cladding screws evenly spaced between seams. The installation of the coping to wall termination provides waterproofing protection and allows for differential movement between the two construction components.

On the inside face of a parapet or wherever a masonry wall intersects a lower roof i have seen cases where the masonry flashing exits the wall one or more courses above the top of the retaining bar for the roof base flashing. The narrower step flashing just isn t wide enough to protect the intersection fully. Fabrication procedure 1 metal cap flashing. Water may be entering the coping at the top of the parapet or entering the roof side of the parapet.

This detail may be used where wall heights are 24 48 inches above roof surface. Roof leg and a 7 in. And to make matters worse structurally we also tend to have some issues. Architects of ultra modern.

The counterflashing laps the base flashing a minimum of 3. Wsrca suggests for walls 24 inches and taller that wall cladding be considered in lieu of membrane wall flashings per detail tp 8a. Mortar bridges below the through wall flashing may be allowing water to cross the cavity into the backup wall. The profile of specific components their.

Air leakage into and out of everything and everywhere. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. Water from either of these locations may bypass flashing and enter the backup wall directly. No membrane under the parapet flashing.

Accounting for roof penetrations when dealing with parapet walls the extra material needed to cover the vertical surface of the inside face of the parapet isn t the only added factor to take into consideration. Bigger step flashing is better. Prior to the installation of the parapet coping a metal flashing material shall be adhered to the structural wall.