EFCO Special Purpose Windows Installation - Manual (Page 47)

EFCO 2014 8
Window Installation Instructions - Typical Subframe Installation Section
Critcal Final Cap Seals
 Cap bead the subsill to window joint at the exterior. Join this bead to the
subjamb to jamb condi on seal. Tool smooth and visually inspect for
pinholes. This cap seal is require and should under no circumstance be le
out.
 Next cap bead the subjamb to window joint at the exterior. Join this seal to
the cap seal that was just run at the subsill. This cap seal is the preferred
method to seal the exterior of the window to the subjamb, as it is a visual
seal, which can be inspected for con nuity. (An alternate to this subjamb
cap seal is the back bead shown on page 5)
 Follow same procedure at the subhead to window joint at the exterior.
 Cap bead the subjamb to window joint at the interior at least 6” up from the
subsill. (Note: this cap bead may be ran up the en re length of the subjamb)
Join this seal to the cap seal that is covering the dart at the subsill. This cap seal
is the preferred method to seal the interior of the window to the subjamb, as it
is a visual seal, which can be inspected for con nuity. (An alternate to this
subjamb cap seal is the back bead on the closure shown on page 7)
 Run a bead of sealant where the jamb closure meets the subsill. Join this to the
ver cal cap seal and the subsill dart seal. Tool and visually inspect for pinholes.
 Seal interior leg of the subframe to the jamb condi on around the en re
perimeter of the opening. In addi on to this seal being cosme c it will aid in
stopping air infiltra on out of the wall cavity.
Cap bead subsill
to window joint
(cri cal)
Cap bead subjamb
to window joint
Seal subjamb
to subsill
Join sealant lines
Cap bead subjamb
to window joint at
least 6” up from
subsill
Seal subjamb
to subsill
Join sealant lines