Installation Guide

SEALANT
GUIDE
This guide was created to provide best
practices for installation guidance on how
to properly install sealant. The goal is to
minimize sealant installation failures due to
incorrect joint design and sealant selection. It
is just as important to correctly design the
joint to maximize performance as it is to
install the sealant properly
.
Installation
Installation
Columbus, Ohio 43207 614.443.0241 Technical Service 1.800.347.4583 © 2020 01056
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4856GP FF1114
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IDEAL SEALANT BEAD
SHOULD NOT HAVE AIR POCKETS
Find the joint movement in the table to the right based
on your intended substrate.
Joint Width = Joint Movement x (100/Class of Sealant)
It is recommended to install joints at the midpoint of
temperature extremes, allowing for minimum initial
joint movement.
For more detailed information on joint design, we
recommend reviewing the most recent additions of
1) ASTM C1193 Standard Guide for Use of Joint Sealants
and 2) ASTM C1472 Standard Guide for Calculating
Movement and Other Eects When Establishing Sealant
Joint Width.
for a 10 foot panel*,
in 1/16 inch units
Estimated Movement
Estimated Movement
JOINT MOVEMENT
SUBSTRATE
0.38 to 0.45
0.60 to 1.15
0.70 to 1.80
1.01 to 1.08
1.02
1.15
1.25 to 1.79
1.29 to 2.21
1.41 to 1.66
2.05 to 2.18
2.69 to 3.07
3.20
6.91 to 14.08
7.37
8.32 to 8.96
8.70 to 9.60
WOOD (PARALLEL TO GRAIN)
BRICK MASONRY/MORTAR
MARBLE
GRANITE
LIMESTONE
GLASS - PLATE
CONCRETE
STAINLESS STEEL
STEEL
COPPER
ALUMINUM
FRP
PVC
POLYURETHANE
POLYCARBONATE
ACRYLIC
Ideal Joint Design
Ideal Joint Design
In colder temperatures, the initial joint width should be larger to accommodate
sealant compression. In warmer temperatures, the initial joint width should be
larger to accommodate joint expansion during cooler weather. NOTE: The use of
backer rod or bond breaker tape is highly recommended for all joints to reduce the
risk of failure.
Consider Temperature
Consider Temperature
An ideal sealant bead should not have any air pockets. It should also form an
hourglass shape twice as wide as it is deep, allowing the bead to stretch without
tearing or pulling away from the substrate. Best practices include designing the
joint opening to accommodate movement.
*For temperature swings of 120
º
F
typical in most areas of the USA.