b'Drip Cap, Penetration Flashing BasicsHeader FlashingOverlapsJamb FlashingJamb FlashingWindow InstalledWith FinWINDOW BRICKMOULD TRIM Sill FlashingBuilding PaperApplied OverSheathingBRICKVENEER Window FrameJamb and Sill CAULK Flashing OverlapsGAP Building PaperFlashing:The flashing configuration will depend on Sealant used with penetration flashing techniquesthe surrounding construction.You can install the shall comply with current Federal Specifications.flashing before or after the new window (Method A or Application: To flash against water penetration in aB) is placed in the rough opening.Either way, the wood frame and sheathing application, a strip offlashing must be installed in a manner to preclude approved flashing material, at least 9 wide, shall beentry of water into the wall cavity and the rough applied in overlapping, weatherboard fashionopening gap.In some cases, the window may have (counter flashing), on all sides of the opening.an integral flashing design. In other cases, flashing The first strip is applied horizontally immediatelymaterials can be used in conjunction with theunderneath the sill - before the window is installed.application of the finish siding. (See section on It should be long enough to extend past each side ofPenetration Flashing) the window, and beyond the jamb flashing when it isHeader Drip Cap:At the head of the window, a drip applied.Fasten the top edge of the sill flashing to cap should be installed from under the sheathing the sill, but do not secure the middle or lower edge paper at the header, to beyond the exterior face of so that building paper, later applied, may be slippedthe window.It should also extend past the trim at up and underneath the bottom of the applied sillthe sides of the window.Install a continuous piece flashing.of aluminum or galvanized flashing material onto the building sheathing, tucked under the sheathing Next cut and apply the two vertical jamb flashing seg-paper, with a 90 degree bend to extend over the new ments, again making them 9 inches wide, and suffi-windows header.A 1/4 return bend is applied ciently long enough to extend above the (to bedown the face of the windows header.To finish, the applied) header flashing, and to extend below thesiding veneer will overlap the header flashing.(already applied) sill flashing.The jamb flashingsshould overlap the applied sill flashing.Fasten onlyPenetration Flashing: Material for flashing shall be the top portion of the jamb flashing so that the lowerbarrier coated reinforced flashing material and shall section(s) will allow the to be applied building paperprovide for 4-hour minimum protection from water to be slipped up and underneath the jamb flashingpenetration when tested in accordance with current ends as well as the sill flashing.ASTM specs. Window Fitters Guide to Window Installation18 2020 AWDI, LLC Do not reproduce without permission'