WALL FLASHING

THE BEST HEAD FLASHING IS SOLDERED AT THE END SO THAT THE END PROFILE MATCHES THE SIDE PROFILE. LOWER EDGE OF FLASHING ExTENDS PAST HEAD cASING AT LEvEL OF DRIP. casing

FLASHING

NOTE THE DETAIL AT RIGHT IS PREFERRED TO THE DETAIL AT LEFT BECAUSE IT IS LESS SUSCEPTIBLE TO PHYSICAL DAMAGE.

FLASHING DRIPS

Soldered Head Flashing

TWO MORE practical solutions ARE TO cut THE FLASHING FLuSH WITH THE cASING, OR, BETTER, TO TRIM & FOLD THE FLASHING ON SITE, AS SHOWN BELOW.

SIDE OF cASING.

FOLD HORizONTAL PART OF FLASHING DOWN OvER SIDE OF cASING.

SuRFAcE OF SIDING TO BE APPLIED LATER.

Folded Head Flashing

Section

WIND0W/D00R HEAD FLASHING

WIND0W/D00R HEAD FLASHING

At End of Flashing

SIDING PANEL

CONTINUOUS HORIZONTAL Z METAL FLASHING WITH 2-IN. (MIN.) OVERLAPS At

joints.

siding panel

moisture barrier continuous under

Isometric horizontal

siding joint

sheathing (OR stud wall for single-wall construction)

continuous moisture barrier

z METAL flashing siding panels

Section

NOTE

IT is prudent to cover the vertical END OF the flashing with a small piece of moisture barrier OR A DAB OF sealant TO MINIMizE THE POTENTIAL FOR LEAks.

HORIZONTAL WALL FLASHING

Corner Details

Any horizontal member such as a handrail, a trellis, or a joist that butts into an exterior wall poses an inher­ently difficult flashing problem at the top edge of the abutting members. Where such a connection is likely to get wet, the best approach is to avoid the problem by supporting the member independent of the wall. A handrail, for example, could be supported by a column near the wall but not touching it. A trellis could be self-supported.

If a horizontal member must be connected to a wall in a location exposed to the weather, two things can be done to protect the structure of the wall. First, do not puncture the surface of the siding with the member, and do everything possible to attach the member to the surface of the siding with a minimum number of fas­teners. Second, place an adequate gasket, such as 30-lb. or 90-lb. felt, behind the siding at the location of the attachment. This will help seal nails or screws that pass through the siding to the structure of the wall.