Instructions / Assembly

Installation Instructions
for Vinyl Windows without Nailing Fin (JII011)
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COMPLETE INSTALLATION
5
Create a continuous air seal on
the interior by integrating the
rough opening and the window
frame with low expansion
polyurethane foam or backer rod
andsealant.
Finish Installation
1. If installing a head
expander, seal between
the head expander and the
windowframe.
2. On the exterior, apply backer
rod and sealant between
the window frame and the
roughopening.
3. If installing a sloped sill
adapter, seal the joint between
the existing sloped sill and sill
adapter, leaving gaps at the weep holes.
After Installation
• Install exterior wall surface per manufacturer’s guidelines.
• Leave an expansion/contraction gap of approximately 3/8" between
window frame and nal exterior wall surface (siding, stucco, etc.). For a
nished look and additional protection, seal this gap on the sides with
backer rod and sealant. If sealant is applied above the drip cap ensure
the sealant bead is discontinuous to allow for drainage.
• Ensure weep holes/channels are clear of debris for proper water
drainage; do not seal weep holes/channels if present.
• If applicable, apply desired exterior vinyl trim.
• Protect recently installed units from damage from plaster, paint, etc. by
covering the unit with plastic.
Window Frame and Accessories Shown from the Side
Continuous air seal
Shim
Flashing
Sill
Rough opening
Sealant gap
Rough opening
Window frame
Head expander
Head
Seal
Interior
Sealant
joint
Gap
Backer rod