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Caulk/Sealant, Insulation,
Water and Air Barriers
16. CAULK SEALANT- Sealants meeting industry
standards AAMA 800 or ASTM C920 enable provision
of a water and air-tight barrier between two surfaces.
Be sure the adhesion properties match the two 
surfaces to be sealed.
17.SPRAY PU FOAM - Low pressure, flexible foam
meeting AAMA 812 specification and ASTM D 2842
for water absorption is injected between the rough
opening and the new window or door to establish a
thermal, air and water barrier around the perimeter
of the newly installed product.
18. WEATHER RESISTIVE AIR BARRIER,
BUILDERS TAPE & PLASTIC VAPOR BARRIER -
Weather Resistive Barriers, Air Barriers and Water
Resistant Barriers are used on exterior walls. Vapor
Barriers and Builder’s Tape are used on warm side
interior walls. They need to integrate with new 
windows and doors to work in concert with them.
19. FOAM INSULATION BOARD -Sometimes called
styro-foam (brand) or foam core (another brand),
these rigid boards and others like them are used 
as a sheathing product underneath stucco or other
applied exterior finishes. They provide air and 
moisture and water resistance and a good substrate
for the applied finish.  
20. BATTE INSULATION - While not recommended
for most installations, can be used to insulate
between the new window or door product and the
rough opening. Water and/or compressing the fiber-
glass material can diminish the insulation value.
21. COMPRESSED FOAM SEALANT TAPE - A
European developed product, this sealant tape slowly
expands and fits the contours of both surfaces of the
rough opening and the door or window frame and
makes a complete seal with minimal pressure.
22. LIQUID FLASHING - Liquid applied flashing is
ideal for new construction Cement Masonry Units
and when old frames remain in place. Liquid flashing
can be applied around wood bucks and to create as
effective sill drainage pan alternative.
23. BACKER ROD - It is unwise to fill a gap greater
than 1/8 inch with caulk without using backer rod.
In this way, the sealant sticks to the two surfaces
and the backer rod acts as a buffer to allow 
expansion, contraction and movement without 
breaking the bond.
Window Fitters Guide to Window Installation 
4                ©2022 AWDI, LLC Do not reproduce without permission
Note:  This list of tools and hardware and application materials is typical but may not reflect the exact tools and hardware
provided by the manufacturer or needed to install all of the window products. The list is for guidance and to be sure that
when the products are ready to be installed, all necessary materials are on hand or readily available.
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SAMPLE MANUAL

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