Intersection Of Stucco Wall And Roof Waterproofing

Many areas of air and water resistive barrier coatings must be installed prior to other construction components such as windows louvers doors roof intersections deck headers.

Intersection of stucco wall and roof waterproofing.

Lay 2x4 blocks on the roof to set a consistent height for the weep screed flashing. N coordinate the stucco assembly installation with other trades on the project. This absorbed water carries the cement paste into the voids in the cmu a process commonly known as wetting out where it cures and locks the two together. The next problem area is where the roof and stucco meet.

In addition wrb paper should be installed at the soffit line and at the. Many flashings must be installed prior to stucco. The bond of the stucco to the cmu is achieved by the concrete masonry absorbing the water from the fresh stucco. Slip the wall leg of the weep screed behind the existing paper.

We used two layers of jumbo tex building paper over open bay. The next problem area is where the roof and stucco meet. To find out how water and stucco interact we built a 20 foot long wall assembly and installed five windows in it see photo below. With sections where the roof does not extend over the stucco wall or where the stucco wall and roof intersect a special type of metal flashing called kick out flashing must be installed to prevent water intrusion.

There have always been problems with the flashing details at the roof to wall intersections of head walls rake walls and chimneys especially if brick or stone veneer or stucco is used. Roof to wall intersections.