EFCO 526 Series - Manual (Page 24)

EFCO 6/2012 Page 24
Series 526 Impact Installation Instructions
STC6
[Fig. 7]
Prior to installing the end dam, apply a generous amount of silicone type sealant to the
end of the subsill. Insert the STC6 fasteners into the end dam, and attach it to the end of
the subsill. After the end dam is attached, the excess sealant should be tooled at the
interior of the subsill/end dam joint to provide a watertight seal. Apply more sealant, if
required, for a watertight seal. (See figures 6 and 7.)
[Fig. 6]
Tool Sealant
Butter the ends of the
subsill with silicone type
sealant prior to installa-
tion of the end dam.
SECTION VI: Subsill Fabrication and Installation
Step 1) Subsill End Dam Requirements
Step 2) Subsill End Dam Installation
Before installing the subsill into the rough opening, determine whether an end dam
(KP00) is required or not. If the surrounding condition does not have an open area or
can be used as a water dam, move to Step 3 on page 25. The first step to installation of
the end dams is to measure the rough opening width. The subsill length should be,
ROUGH OPENING WIDTH - 3/8". This formula will give enough room for the end dam
and attachment screws to fit on both ends of the subsill without interference with the
rough opening. (See figure 5 below.)
[Fig. 5]
STC6
STC6
3/16 3/16
SUBSILL LENGTH = R.O. - 3/8
ROUGH OPENING
KP00 END DAM PACKAGE
Prior to applying sealant to the required areas, clean the area with Isopropyl Alcohol and a clean towel
that will not leave towel materials behind. Wipe off material with a sufficiently dampened towel to remove
all dust, oil, and cutting fluids from the required areas. Allow to air dry before applying any sealant.