b'4. Prior Weather Sealing Choosing to use spray foam will require accurateapplication of foam beads in the header, jamb and All Flashing should be done prior to mounting the sill gaps and backer rod on both the interior andnew window. Install proper flashing on all four sides exterior. The sill gap needs to allow two places forwrapping the header and jambs and sill. The sill proper drainage to the exterior.flashing should be in a sill pan fashion with side and Masonryback dams to direct water to the outside. w/ WoodThe recommended method of flashing the sill would Buckbe with slow expansion compressed sealing foam. Use a WoodThe foam should be placed on the sill with cut-outs Surroundfor the capture blocks as shown. in aMasonryThe slow expansion foam can be used on the jambs Opening,and head and can be installed prior to installing the properlywindow into the opening, or placed in the gap once sealed withthe window is set in place. It should be placed into flashingthe gap along the header and jambs from the outside tape and/orto accommodate the jamb clips. The foam tape can be foam left exposed to the elements or if recessed sufficiently, sealingcan serve as backer rod for exterior application of tape.sealant.New Construction Wood Frame ReplacementWoodFraming Properlyneeds to be flash theproperly opening.flashed Wrap theand with a header andsill pan jambs withprior to flashingmounting tape andthe win- use slowdows. expansionfoam seal-ing tapealong thebottom or a sill pan.Masonry Wood BuckConcrete Similar toBlock Wall Frameneeds to be replace-sealed, ment, placewith proper a woodsill buck in thedrainage opening tobefore the cover thewindows left-in-placeareremnantsmounted. of the oldwindow.Window Fitters Guide to Window Installation 1192020 AWDI, LLC Do not reproduce without permission'