FIREBOND® Concentrate

Bonding agent

Product Description

FIREBOND® is an Underwriters Laboratories Inc. (UL) classified bonding agent approved for use with any of the fire protection products manufactured by GCP Applied Technologies. FIREBOND® is water based, nonflammable and ready to use. FIREBOND® is classified for use with GCP fire protection products in accordance with ASTM E119 and E84 and listed in the UL Fire Resistance Directory, category CBUI encapsulants.


FIREBOND® may be used as a bonding agent or surface sealer for the following applications:

  1. As a bonding agent over polystyrene or urethane foam insulation prior to application of MONOKOTE® Z-3306 Thermal Barrier.
  2. As a bonding agent over primed/painted structural steel (columns and beams)1 prior to application of MONOKOTE® MK-6 /HY , MK-6/HY ES™, MK-6s, MK-6/GF, MK-10/HB, MK-10/HB ES, MK-1000/HB, MK-1000/HB ES, Z-106, Z-106/HY, Z-106/G, Z-146, Z-156 and RETRO- GUARD® RG.2
  3. As a bonding agent over concrete floor and/or roof units (including slab, panjoist, hollow-core or precast plank or TEE units) prior to application of the products listed in item 2.
  4. As a surface sealer (where specified) over any of the above products. Coverage rate requirements will vary based on the project requirements.Where specified, a surface sealer shall be installed in one or more coats in such a manner that the sealer does not saturate the fire protection product. The fire protection product shall be substantially dry prior to sealer application.

Technical Support

Refer to GCP Applied Technologies product literature to determine acceptability of fire protection products for the intended use.

Any inquiry related to products manufactured by GCP Applied Technologies should be addressed to:

GCP Applied Technologies
2325 Lakeview Parkway Suite 450
Alpharetta, GA 30009

or call toll free: 866-333-3SBM (3726)
Customer Service Center

Physical Properties

Volatile Water
Actual VOC content 14.3 ± 10 g/L
Average particle size 0.2 microns
Flash point  Noncombustible (water-based)
Odor Similar to latex house paint
Shelf life at 78 °F 36 months minimum, (in originally factory sealed containers)
Weight per gallon at 78 °F 8.8 lbs
Dry time at 78 °F To touch:  1–2 hours Additional coats: (when dry)
Fire rating ASTM E84 Class “A”
Flame spread 5
Smoke developed 5

Product Application

FIREBOND® can be applied with most major brands of airless latex paint spray equipment. FIREBOND® may also be applied with a common garden sprayer, paint brush or roller.


FIREBOND® at full concentrated strength— up to 1000 ft2/gal FIREBOND® diluted 1:1 (with water)— up to 500 ft2/gal

Clean Up

Clean tools and drippings with warm soapy water before FIREBOND® dries.

FIREBOND® is manufactured by Fiberlock Technologies Inc. for GCP Applied Technologies. Any inquiry related to products manufactured by Fiberlock Technologies, Inc., should be addressed to:

Fiberlock Technologies, Inc. 
150 Dascomb Road 
Andover, MA 01810 

or call toll free: 800-FIBERLK

GCP provides technical support for all of its products. The Fiberlock Technologies, Inc. SDS (Safety Data Sheet) for FIREBOND® are available at our web site,


All statements, technical information and recommendations contained herein are based on tests we believe to be reliable. However, since the conditions of use and application are beyond our control, GCP Applied Technologies shall not be liable for any damage, direct or consequential, resulting from the use of this material or design. GCP Applied Technologies’ only warranty shall be to replace any of its products found to be defective.


KEEP OUT OF REACH OF CHILDREN. Keep from freezing. Do not store at temperatures above 100 °F. | North America customer service: 1-877-4AD-MIX (1-877-423-6491)

Nous espérons que ces renseignements vous seront utiles. Ils sont basés sur des données et des connaissances jugées véridiques et exactes. Ils sont soumis pour considération, étude et vérification, mais nous ne garantissons aucunement les résultats obtenus. Veuillez lire toutes les déclarations, recommandations, suggestions et conditions de vente relatives aux produits que nous fournissons. Aucune déclaration, recommandation ousuggestion est intentionée pour usage qui enfreindrait un brevet, un droit d'auteur ou un droit d'un tiers.

MONOKOTE, MK-6, HY RETRO-GUARD, et SPATTERKOTE sont des marques déposées qui peuvent être enregistrées aux États-Unis et / ou dans d'autres pays auprès de GCP Applied Technologies Inc. Cette liste de marques a été compilée en utilisant les informations publiées disponibles à la date de publication et pourrais contre-indiquée le propriétaire ou statut actuel de la marque.

© Copyright 2018 GCP Applied Technologies Inc. Tous droits réservés.


In Canada, GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.

MK-005 Firebond

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 450, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
This document is only current as of the last updated date stated below and is valid only for use in the Canada. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2023-06-29