2"
1A
YOU WILL NEED TO SUPPLY:
• Composite or Impervious shims/spacers
(12 to 20)
• Pressure-treated 2x4 (4-6 ft)
• 3-1/4” finish head screws (16-20)
• Wood blocking to support new window.
(20-30 ft)
• Pella® SmartFlash™ foil backed butyl window
and door flashing tape or equivalent
• Pella Window and Door Installation Sealant or
equivalent high quality, multi-purpose sealant
(2 tubes per window)
• Low expansion, low pressure polyurethane
insulating window and door foam sealant -
DO NOT use high pressure or latex foams
TOOLS REQUIRED:
• Tape measure
• Level
• Sealant gun
• Square
• Screwdriver (Flat)
• Utility knife
• Hacksaw
• 5/32" and 3/8" drill bit
• 1/2" drill guide
• Drill
• Reciprocating saw
• Electric shears, circular
saw or table saw
(optional)
Installation will require two or more persons.
A.
Prior to removing the existing window sash
and/or glass,
check that the frame size of the new
window is 1/2” to 3/4” smaller that the inside of the
existing frame or 1/2” to 3/4” smaller than the inside
of the drywall return for the flush-cut method to
make sure it will fit correctly.
B.
Prepare the window opening
by removing the
sash and/or glass from the existing aluminum
window frame.
Note: If a divider exists between vent and fixed
glass areas it will be necessary to cut with a
reciprocating saw or hacksaw and remove.
1B
1B
OPTIONAL FLUSH CUT METHOD
(Skip to step F for non flush cut installation)
C. Using a reciprocating saw cut two passes 2” apart
through the exiting window stop flanges. Do not
cut into the drywall.
1C
SEALANT
SEALANT
1
OPENING PREPARATION
1A
