b'Coastal CMU Installation with Installed BuckStep 5: Alternate 1:If not using a prefabri- If a precast concrete cated sill pan, cut an sill is used, coat the approximate 1x1 to corners with liquidserve as back dam for flashing or seal the sill drainage and install cornersto completeon sill buck. the sill pan effect.Cast Sill w/ Taper istough to sealBuck PreCastwithout Shaped Sillsill pan is provides backnotdam and slopesufficient for sill pandrainageExterior ExteriorStep 6: Step 7:Using liquid membrane Apply bedding sealantflashing material, coat to face of buck on allthe sill, the back dam exterior surfaces to pro-and the jamb buck and tect it from possibleCMU up the sides 9 water absorption fromand out on the face of the stucco material thatthe CMU, inside and it will contact.out, 9 to 12 inches.This will form a flashed On the sill, leave 2sill pan for proper opening in bead ofdrainage of the cavity. sealant in two places to allow drainage.Exterior ExteriorWindow Fitters Guide to Window Installation1282020 AWDI, LLC Do not reproduce without permission'