EFCO Special Purpose Windows Installation - Manual (Page 42)

EFCO 2014 3
Window Installation Instructions - Typical Subframe Installation Section
Subhead/Subjamb Prepara on and Installa on
 Typically EFCO will send subjambs long for field fit. The sill
end of the subjambs may have some type of notch cut by
EFCO when required.
 When the subjambs come pre‐notched at the sill end, all
length adjustment should be done to the head end.
 All notching will be done in the field by the installer on
“Express Jobs”.
 All anchorage clear holes, blocking, sealants, and perimeter
fasteners are not by EFCO.
 Measure for the sub jamb lengths. See ver cal “X” and “Y”
dimensions as indicated in the figure.
 Subtract the “Y” dimension from the “X” dimension.
Square cut the subjambs to this length from the head end
of the subjamb.
 Install the subjambs plumb, shimming as necessary.
 The subhead will typically be square cut the width of the
rough opening minus 1/2”.
 Install the subhead using the subjambs as a guide.
 Fasteners and shims are by the installer.
 Cover all fastener heads with sealant to ensure water ght
seal. Tool the sealant around the fastener heads so that
the sealant makes contact with the face of the subframe.
 Note: The sealing of the subhead and subjambs to the
condiƟon is criƟcal to the performance of the assembly and
will vary greatly based on the building condiƟon. The loca-
Ɵon of these seals will be shown on the shop drawings.
Shim; high impact
shims may be required
at some loca ons
Subhead
Subjamb Subjamb closure
Sill condi on
Head condi on
Subsill