HydroArmor® - Water-Based Protective Coatings for Demanding Environments
The HydroArmor® line is H.B. Fuller’s family of sprayable, water-based acrylic latex coatings designed for use across the automotive and transportation industries and related industrial markets. These ready-to-use coatings support manufacturers who need consistent, easy-to-apply surface protection on metal, wood, composites, and other common substrates.
The HydroArmor® advantage
HydroArmor® coatings are designed for environments where components are exposed to regular heavy use, weather, and service conditions. The HydroArmor® product range provides water-based, low-sag options that support efficient spray application on open surfaces as well as complex geometries such as underbodies, seams, and structural cavities.
Where is HydroArmor® used?
HydroArmor® serves multiple markets, including:
- Automotive and transportation applications, such as exterior and body areas, bonding and assembly interfaces, and sealant zones on vehicles.
- Transportation segments such as buses, trucks, recreational vehicles, marine structures, and other commercial or off-road vehicles where coated surfaces need continuous protection.
HydroArmor® Key Products:
- HydroArmor® 7740 - Used on steel, aluminum, fiberglass, and plywood in transportation.
- HydroArmor® 7763 - Applied to aluminum, fiberglass, cold-rolled steel, galvanized steel, and primed metal surfaces in exposed underbody areas and restricted cavities.
- HydroArmor® 8800BL - Designed to quickly build a high level of water resistance and used on metal, galvanized steel, stainless steel, aluminum, fiberglass, and wood and composites. It adheres well to bus and truck underbodies, RV structures, and other transportation seals.
- HydroArmor® 7770 - Applied by spray to galvanized steel, aluminum, stainless steel, steel, fiberglass, and plywood in lap sealing and sound-damping applications on automotive and transportation structures.
Application Method and Compatible Surfaces
HydroArmor® products are formulated for spray application to help streamline production and reach both exposed and hard-to-access areas. They can be applied to a variety of commonly used materials, including aluminum, stainless steel, galvanized and cold-rolled steel, fiberglass, composites, plywood, wood, and other metal surfaces, as specified for each product in the range.
HydroArmor® Product Family
The HydroArmor® portfolio includes several ready-to-use formulations, including:
- Options for transportation undercarriage and underbody zones where a spray-applied, low-sag coating is needed on structural members and hidden cavities.
- Variants used for lap sealing, sound-damping roles, and bonding to steel, galvanized steel, stainless steel, primed steel, aluminum, fiberglass, and plywood.
- Products positioned for highly water-resistant protection on surfaces such as stainless steel, wood, and composite decking used in transportation flooring and related structures.
Advantages for Manufacturers
HydroArmor® coatings give manufacturers a water-based alternative to traditional asphaltic and solvent-heavy systems used in transportation. The product family is designed to support efficient clean-up and handling while helping customers address undercarriage, structural, and enclosure coating needs across a wide range of substrates.
Explore the full HydroArmor® product line, including technical data and supporting documents, to identify the coating that best fits your application and process requirements. Contact H.B. Fuller today to discuss your project with a specialist and learn how HydroArmor® can be integrated into your manufacturing workflow.