EFCO Special Purpose Windows Installation - Manual (Page 48)

EFCO 2014 9
Window Installation Instructions - Typical Subframe Installation Section
Subsill Installa on When Subhead /Jambs Are Not Used
 Prep subsill as show on page 1.
 Install subsill as shown on page 2.
 Silicone sealant to be con nuous from the end
dam to subsill, silicone should have a minimum
contact of 1/2” with each surface. Tool into all
crevices and corners.
 Push backer rod into the void between the end
dam and the condi on.
 Seal the end dam to the condi on.
 Lay a bead of sealant on the subsill for the window
to set in as shown on page 5.
 Set window in subsill, and anchor at head and
jambs.
 Install and seal drive in compression dart as shown
on page 6.
 Fillet seal the window to subsill joint, tool and in‐
spect for pin holes as shown on page 8.
 Seal window to building condi on around the
en re perimeter of the opening, using a silicone
compa ble sealant as specified by the architect or
contractor.
 Tool sealant into weep slot area at subsill.
 Tool sealant into void around subsill extender.
 Seal interior leg of window and subsill to the jamb
condi on around the en re perimeter of the
opening. In addi on to being cosme c this will aid
in stopping air infiltra on out of the wall cavity.
Seal end dam
to subsill
(Jamb condi on
removed)
Backer rod
Seal end dam
to condi on
Set window in a
bead of sealant
Drive in dart
and seal
Seal window to
subsill joint
Seal window to
jamb condi on
Tool sealant into
subsill profile
Join sealant
lines