Publish your products
Emseal Backerseal® - secondary vertical expansion seal for joints in walls
Sika

Emseal Backerseal® - secondary vertical expansion seal for joints in walls

A joint sealant for building walls and wall systems, Sika Emseal Backerseal is an economical, precompressed, secondary joint sealant to field-applied caulking. Backerseal is a polyurethane foam infused with a hydrophobic-acrylic impregnation technology.

Unlike ‘double caulk and backer rod’, Backerseal behind field-applied liquid sealants provides true “belt and suspenders” sealing–two systems working on different principles to perform the same function. ‘Double caulk and backer rod’ is very difficult to install to achieve the geometry necessary to function in moving joints. In addition, the same forces (tensile stresses at the bondline and within the cured sealant) that will cause the outer installation to fail, will also likely cause the inner installation to fail as well. Backerseal works in compression providing a practical-to-install, fully functional secondary joint sealant using different performance principles than the primary, liquid sealant. Additionally Backerseal provides insulation and sound attenuation value as well as the ability to resist the effects of air-pressure differentials.

Features
• Provides watertight secondary seal
• Provides R-value at joints
• Resists air pressure differentials/ABAA compliant
• Remains firmly in compression against substrates
• Contributes to LEED
• Odorless
• Sound Attenuating
• Clean handling
• Non-staining
• UV stable
• Low temperature flexible
• High-temperature stable

Uses
As a secondary sealant behind:
• Conventional backer-rod and liquid sealants
• Behind directly-applied liquid sealant

Ideally suited to:
• panelized wall systems
• curtain wall systems
• window perimeters
• precast panels
• concrete
• brick
• stone
• metal panels, etc.

(Note: Backerseal was formerly named GreyflexTM and may still appear in legacy specifications that way.)

Sizes
Standard sizes | 1/4″ (6mm) to 1 1/4″ (30mm).
Custom sizes | 1/8″ (3mm) to 6″ (150mm).

Movement
+25%, -25% (50% total) of nominal material size.

Color
Gray

Technical specification
  • Unique ref.emseal-backerseal
  • Product familyWatertight Expansion Joints
  • Product groupVertical Wall
  • TypeObject (single object)
  • Date of publishing2023-09-27
  • Edition number1
Related
  • Material mainFirm Foam
  • Designed inUnited States
  • Manufactured inCanada
Classification
  • BIMobject CategoryBuilding Materials - Waterproofing & Membranes
  • IFC classificationWall
  • Uniclass 2015 CodePr_35_90_27
  • Uniclass 2015 DescriptionExpansion joints
  • CSI MasterFormat 2014 Code07 95 00
  • CSI MasterFormat 2014 TitleExpansion Control
  • OmniClass Number23-13 31 21 19 11
  • OmniClass TitleExpansion and Contraction Joints

Region availability

Europe Asia North America Africa South America Oceania
Åland Islands
Afghanistan
Anguilla
Algeria
Argentina
American Samoa
Albania
Armenia
Antigua and Barbuda
Angola
Bolivia
Australia
Andorra
Azerbaijan
Aruba
Benin
Brazil
Cook Islands
Austria
Bahrain
Barbados
Botswana
Chile
Federated States of Micronesia
Belarus
Bangladesh
Belize
Burkina Faso
Colombia
Fiji
Belgium
Bhutan
Bermuda
Burundi
Ecuador
French Polynesia
Bosnia and Herzegovina
British Indian Ocean Territory
British Virgin Islands
Cameroon
Falkland Islands (Islas Malvinas)
Guam
Bulgaria
Brunei
Canada
Cape Verde
French Guiana
Kiribati
Croatia
Cambodia
Caribbean Netherlands
Central African Republic
Guyana
Marshall Islands
Cyprus
China
Cayman Islands
Chad
Paraguay
Nauru
Czech Republic
Christmas Island
Collectivity of Saint Martin
Comoros
Peru
New Caledonia
Denmark
Cocos (Keeling) Islands
Costa Rica
Côte d'Ivoire
Suriname
New Zealand
Estonia
Georgia
Cuba
Democratic Republic of the Congo
Uruguay
Niue
Faroe Islands
Hong Kong
Curaçao
Djibouti
Venezuela
Norfolk Island
Finland
India
Dominica
Egypt
Northern Mariana Islands
France
Indonesia
Dominican Republic
Equatorial Guinea
Palau
Germany
Iran
El Salvador
Eritrea
Papua New Guinea
Gibraltar
Iraq
Greenland
Eswatini
Pitcairn Islands
Greece
Israel
Grenada
Ethiopia
Samoa
Guernsey
Japan
Guadeloupe
Gabon
Solomon Islands
Hungary
Jordan
Guatemala
Ghana
Timor-Leste
Iceland
Kazakhstan
Haiti
Guinea
Tokelau
Ireland
Kuwait
Honduras
Guinea-Bissau
Tonga
Isle of Man
Kyrgyzstan
Jamaica
Kenya
Tuvalu
Italy
Laos
Martinique
Lesotho
United States Minor Outlying Islands
Jersey
Lebanon
Mexico
Liberia
Vanuatu
Latvia
Macau
Montserrat
Libya
Wallis and Futuna
Liechtenstein
Malaysia
Nicaragua
Madagascar
Lithuania
Maldives
Panama
Malawi
Luxembourg
Mongolia
Puerto Rico
Mali
Malta
Myanmar (Burma)
Saint Kitts and Nevis
Mauritania
Moldova
Nepal
Saint Lucia
Mauritius
Monaco
North Korea
Saint Pierre and Miquelon
Mayotte
Montenegro
Oman
Saint Vincent and the Grenadines
Morocco
Netherlands
Pakistan
Saint-Barthélemy
Mozambique
North Macedonia
Palestine
Sint Maarten
Namibia
Norway
Philippines
The Bahamas
Niger
Poland
Qatar
Trinidad and Tobago
Nigeria
Portugal
Saudi Arabia
Turks and Caicos Islands
Republic of the Congo
Romania
Singapore
U.S. Virgin Islands
Reunion
Russia
South Korea
United States
Rwanda
San Marino
Sri Lanka
Saint Helena
Serbia
Syria
São Tomé and Príncipe
Slovakia
Taiwan
Senegal
Slovenia
Tajikistan
Seychelles
Spain
Thailand
Sierra Leone
Svalbard and Jan Mayen
Türkiye
Somalia
Sweden
Turkmenistan
South Africa
Switzerland
United Arab Emirates
South Sudan
Ukraine
Uzbekistan
Sudan
United Kingdom
Vietnam
Tanzania
Vatican City
Yemen
The Gambia
Togo
Tunisia
Uganda
Western Sahara
Zambia
Zimbabwe