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YOU WILL NEED TO SUPPLY:
• Cedar or Impervious shims/spacers (12 to 20)
• 2" galvanized roofing nails (1/4 lb.)
• Closed cell foam backer rod/sealant backer (12 to 30 ft.)
• Pella
®
SmartFlash
™
flashing tape or equivalent
• High quality exterior grade polyurethane or silicone sealant
(1 tube per window)
• Great Stuff ™ Window and Door Insulating Foam Sealant
by the Dow Chemical Company or equivalent low pressure
polyurethane window and door foam - DO NOT use high
pressure or latex foams
• Pella aluminum sill support or 2 x 4 wood blocking
• Interior trim and/or jamb extensions (15 to 40 ft.)
1
ROUGH OPENING PREPARATION
A. Verify the opening is plumb and level.
Note: It is critical that the bottom is level.
B. Verify the door will fit the opening. Measure all four
sides of the opening to make sure it is 3/4" larger than
the door in width and 1/2" larger in height. On larger
openings measure the width and height in several places
to ensure the header or studs are not bowed.
Note: 1-1/2" or more of solid wood blocking is required
around the perimeter of the opening. Fix any problems
with the rough opening before proceeding.
C. Cut the water resistive barrier (1C).
Water Resistive Barrier
1C
D. Fold the water resistive barrier (1D). Fold side flaps into
the opening and staple to inside wall. Fold top flap up and
temporarily fasten with flashing tape.
foil backed butyl window and door
1st cut
3rd cut
2nd
cut
4th cut:
Make a 6" cut up from
each top corner at a 45°
angle to allow the water
resistive barrier to be
lapped over the n at the
head of the door.
TOOLS REQUIRED:
• Tape measure
• Level
• Square
• Hammer
• Stapler
• Scissors or utility knife
• Sealant Gun
• Drill
• Screwdrivers
(#2 Phillips & small flat blade)
I n t e r i o r
1A
I n t e r i o r
1B
E x t e r i o r
1D
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