Installation Guide

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Table Of Contents

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

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

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

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

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

typical in most areas of the USA.

Summary of content (6 pages)

PAGE 1
SUBSTRATE Ideal Joint Design IDEAL SEALANT BEAD SHOULD NOT HAVE AIR POCKETS 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. Estimated Movement Find the joint movement in the table to the right based on your intended substrate.
PAGE 2
THREE-SIDED ADHESION 1Analyze Joint Movement 3 Prior to Installation 4Filling the Joint STEP STEP STEP Allowing for joint movement is necessary because all substrates will move due to temperature expansion and contraction. Joint movement measurement is critical to determine the type of sealant to use, if the sealant is capable of performing as expected and to ensure the joint will properly expand and contract in adverse weather conditions.
PAGE 3
THREE-SIDED ADHESION 1Analyze Joint Movement 3 Prior to Installation 4Filling the Joint STEP STEP STEP Allowing for joint movement is necessary because all substrates will move due to temperature expansion and contraction. Joint movement measurement is critical to determine the type of sealant to use, if the sealant is capable of performing as expected and to ensure the joint will properly expand and contract in adverse weather conditions.
PAGE 4
THREE-SIDED ADHESION 1Analyze Joint Movement 3 Prior to Installation 4Filling the Joint STEP STEP STEP Allowing for joint movement is necessary because all substrates will move due to temperature expansion and contraction. Joint movement measurement is critical to determine the type of sealant to use, if the sealant is capable of performing as expected and to ensure the joint will properly expand and contract in adverse weather conditions.
PAGE 5
SUBSTRATE Ideal Joint Design IDEAL SEALANT BEAD SHOULD NOT HAVE AIR POCKETS 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. Estimated Movement Find the joint movement in the table to the right based on your intended substrate.
PAGE 6
SUBSTRATE Ideal Joint Design IDEAL SEALANT BEAD SHOULD NOT HAVE AIR POCKETS 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. Estimated Movement Find the joint movement in the table to the right based on your intended substrate.