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NOTE: All drawings are not necessarily to scale or representative of any particular window type or opening. They are for guidance. Actual situations and products may vary.
Replacement and Retrofit Variations: 
Frame-In vs. Frame-Out; Wall Constructions; 
and Window Frame Materials
APPENDIX
STANDARDS AND PRACTICES
There are many wall constructions (wood frame, masonry,
and concrete block) along with vinyl, wood, and metal 
windows that are to be removed, and vinyl, wood, composite
and metal windows to be mounted as replacement.
These variations require individual considerations when
removing the old windows; such as whether you leave the
old frame in place, or remove it completely.
These wall construction and window frame materials also
impact how you remove the old window, how you install the
new windows, and how you flash and seal the opening to
prevent air and water infiltration.
It’s important how you install so you can preserve the in-lab
performance of the new product when placed in-service.
With all these variations, the basic approach is the same. 
What needs to be decided first is whether the new window
mounts against the old window frame, preserving the exist-
ing weather barrier interfaces already established between
the left-in place window and the wall; or does the new win-
dow go into an opening where the old frame is gone and all
the weather barriers need to be re-constructed.
The following shows examples of different approaches - with
the common goal of proper weather management.
SAMPLE MANUAL

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