Closed mitered valley with interwoven metal valley flashing shown with flat tile or slate roofing. 

Counter flashing details with cement mortar-sealed joints. 

Typical metal open valley flashing with underlayment. 

Use of rolled roofing material for open valley construction. 

Pan and cover tile roof ridge detail with underlayment felt and ridge closure.

Slate roof ridge details with vertical grade asphalt roof cement or slater's cement. 

Typical single-layer underlayment installation for steep slope roofs that are 4:12 or steeper. 

Sloped roof drip edge detail with built-in cant and raised edge perimeter flashing for tile roof. 

Sloped roof drip edge detail with a cant strip and raised edge perimeter flashing for a tile roof. 

Sloped roof drip-edge detail with raised edge perimeter flashing for roll roofing and shingles. 

Woven valley intersection with underlayment. 

Slab-on-grade foundation with floor and footing poured as one unit and the floor at, or only slightly above, ground level. 

Crawl space foundation with unfinished dirt floor at or below adjacent ground level. 

Minimize through-wall penetrations for water, sewer and electrical connections by sealing around all joints and penetrations for pipes and conduits. 

Full-basement foundation lined with mat and backfill atop coarse gravel. 

Full-basement foundation lined with continuous drainage gravel. 

Foundation drains prevent moisture infiltration with rising water tables.

Sill flashing installation to sliding glass door opening.

Cross-section of window opening showing integration of structure's water-resistive system in a wall with brick veneer.

Flashing and water-resistive barrier installation at bridge ledge.