Window Fitters Guide to Window Installation 
115               ©2022 AWDI, LLC Do not reproduce without permission
Installing Replacement
Doors
The key to replacing an old door with a new, energy efficient,
weather-resistant door is to remove the old door and prepare
the opening to be plumb, square, level and with a firm sur-
rounding frame that you can properly mount the new to.
Look through this book at both the window and the door
installations to match your wall construction. Once you have
determined what the wall construction is, remove the old
door as carefully as possible to maintain the integrity of the
structural surround and the weather barrier continuity.
When the old door is removed, the proper integration of the 5
Barriers (see elsewhere in this book) has been destroyed and
it will be tough to reconnect the comparable barriers in the
new door system to the remnants of the same barriers in the
wall.
Lastly, old doors often are mounted in openings that have
suffered water intrusion. Use impel rods in the frame where
water has been and may still reside to prevent mold, mildew,
rot and insect damage. 
Impel Rods are placed into holes drilled in
wood at key locations. As the Rods dis-
solve, the borate preservative migrates to
areas of highest moisture and concen-
trates where wood is most susceptible to
decay. If the wood dries the Rods stop dif-
fusing. The residual preservative remains
in place. When the moisture content rises
the Rods resume diffusion. Depending
upon conditions of moisture, Impel Rods
need not be replaced for years. A chart
included in each package that shows rec-
ommended rods sizes and spacing for
each type of installation. There are three
easy steps to installing Impel Rods:
1. Drill appropriate sized holes to
accommodate the 
predetermined number and
size of Impel Rods required.
2. Insert the suitable size
and number of Impel Rods
into the holes.
3. Seal the holes with treated
wooden dowel, wood filler (like
wood putty or caulk). Paint if
desired.
Treated Wood Buck
REPLACING
PATIO DOOR
REPLACING
ENTRY DOOR
Flashing
Flashing
Caulk/Sealant
Caulk/Sealant
Patio Door
Entry Door w/Brickmould
Drip Cap
Drip Cap
Recess from
Removed 
Door
Optional
Aluminum 
Cap Stock
Sill 
Flashing
Sill 
Flashing
Sill Pan
Sill Pan
Shims
Shims
SAMPLE MANUAL

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