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46

A U G U S T , 2 0 1 6

frame and existing flashing in place

and only remove the sashes and the

side track, or in some cases the exist-

ing window is cut out of the rough

opening.

As previously stated, the most import-

ant difference between the window

types is the nailing flange that is part of

the new construction window. During

original construction, windows are

installed in existing framing before any

exterior building underlayment and final

exterior coverings are installed, i.e.

stucco, siding, stone, etc. These new

construction windows are installed with

a nailing flange that encompasses the

perimeter of the existing frame that

eliminates any potential areas of water

infiltration. New Tyvek house wrap is

installed over the nailing flange creating

a weather proof barrier and the final

exterior building component is installed.

In comparison, a replacement win-

dow can be installed by cutting away

the existing nailing flange from the orig-

inal new construction window, installing

the replacement windows into the exist-

ing openings and leaving the existing

perimeter flashing details. The new

replacement window is installed, a new

bead of caulk is installed at the perime-

ter and everyone is satisfied. The home-

owner is happy as they received a cost

effective window replacement and the

association is happy as a homeowner

just improved the value of the property.

Let’s now fast forward three years

from when Mrs. Smith installed new

replacement windows. After several

days of wind driven rain, Mrs. Smith

calls management to report a leak that

she is experiencing beneath her win-

WINDOWS...

from page 44.