No Shrinkage
Locks out air and water infiltration to protect 
integrity of the seal
Proven Wet Surface Application
Ability to use the same sealant in warm 
and cold temperature situations to produce 
consistent results. 0˚F – 140˚F cold and warm 
weather application
Strong Adhesion / All Surfaces will stick to even 
the most difficult to bond building materials
5X stretch, 50% joint movement Long term durability
assurance even with expansion and contraction of
building materials
24 hour fast cure paintable 1 HR. Fast cure to 
protect the building structure from outside forces 
and quick paintability saves time
Achieves bubbling resistance faster to ensure 
optimal aesthetics
Sufficient Color Matches to offer perfect color match 
to all primary building materials
Dirt & Dust Resistance ensures optimal 
visual appeal long after an installation
UV Resistance
Long term durability to compliment the durability of
the building structure 
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AWDI understands that the application of a sealant is
as crucial as the choice of sealant.  When a bead of
sealant is applied to a joint there are severable 
factors to consider:
•     Adhesion
•     Flexibility
•     Durability
Within these three performance aspects there are
countless combinations of applications, substrates
and conditions a sealant is exposed to.
Bedding Joints:  
For bedding joints, it is especially important that 
the sealant meet AAMA 800-802, and is of the right
consistency and made up of 100%
solids so it will not shrink after cure,
unlike solvent and latex based
sealants that shrink and create
gaps after curing.
Fillet Joints: 
A fillet joint is formed when two surfaces come
together to form a right angle.
The sealant used to join these
two surfaces is triangular in
shape.  The sealant must
adhere to the variety of 
substrates you’re faced with.
Without strong adhesion
there is a high chance that
the sealant will pull away
from the substrate allowing
for air and water infiltration. 
Control Joints:
A control joint is formed 
when two similar or 
dissimilar materials meet or when substrates do not
form a right angle. This joint will require both a
backer rod and sealant for proper application.  
This joint can be as wide as 5/8 inch and be prone 
to extreme movement, a highly flexible sealant is 
necessary for a reliable seal
with this application. In
order to successfully install
a window or door and effect
a lasting weathertight seal, 
A good choice is a sealant
that meets AAMA 800-802
for proper adhesion to the
common building materials.                                                                                
Picking the Proper Sealant
Desired Properties
Window Fitters Guide to Window Installation 
11                ©2022 AWDI, LLC Do not reproduce without permission
ADHESIVE JOINT
BOND BREAKER 
TAPE
ANGLED JOINT
BACKER ROD
•     Compatibility
•     Temp, Weather, Exposure)
•     Aesthetics
AWDI recommends an
ASTM C920, Class 50
sealant that is designed
for exterior/interior use
for sealing around 
windows, siding and
doors. Quality sealants
bond best to a wide 
variety of materials and
their versatility in 
performance provides
valuable features and
benefits for all installers. 
Remember: Ability to
tool can be important to
finish the rough edges
that remain after the old
window tear out.                       
SAMPLE MANUAL

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