Length of flashing onto the deck.  Not often an issue with most stucco systems utilized today.  This is more often a problem encountered with natural stone and brick exterior finishes. 

The flashing needs to extend out onto the surface of the deck a minimum of 2” further than the finished thickness of the exterior wall system. 

Flashing Installation BEFORE Finish System.

For new construction, the flashing should be installed BEFORE the exterior finish system is underway.  Often times the exterior finish systems contractor will install flashings when they begin, check with your contractor for more details.  If in fact, the exterior contractor installs the flashing please make sure that they follow the details and specifications shown here to ensure a watertight, effective installation of any deck system. 

Common Problems

Fascia higher than floor sheathing

House joints not installed level with the outside beam.

Flashing installed under sheathing.