HydroArmor® 7720 is a latex coating that prevents water from wicking into boat flooring, bus flooring, and recreational vehicle walls. HydroArmor® 7720 can be brushed or rolled onto floor boards, the cut edges of floor boards, wall edges, and to window and wheel openings. The coating dries to form a waterproof seal that prevents moisture from wicking into the AB marine wood flooring, plywood, soft and hardwood, bead board, and the bond lines between the materials used in the construction of the RV walls.

Product Type: Latex, Waterborne Adhesive, Waterborne Coating

Application Area: Boat Flooring, Bus Flooring, Marine Applications, Recreational Vehicle Walls

Compatible Substrates & Surfaces: Plywood, Wood

Features: Easy To Clean, Waterproofing

Application Method: Brush, Roll Coater

Technical Data Sheet
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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Highlights
  • Our lab tests of HydroArmor® show this material is extremely durable under even the worst service conditions.
  1. Several days at 250°F (121°C) and immersion in acidic and caustic solutions did not affect dried coats of this material.
  2. Coats did not lose adhesion or crack when test panels were bent at -30°F (-34°C).
  3. After weeks of exterior exposure cycling, the HydroArmor® coatings remained intact and there was no adhesion loss.
  • HydroArmor® products dry quickly at ambient temperatures.
  • HydroArmor® is as safe to use and as easy to clean up as latex house paint.
  • HydroArmor® 7720 provides better protection than any of the competitive prodects we’ve tested while avoiding the environmental and safety problems inherent in many such coatings.

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Application Instructions
  • As with any coating, mix product thoroughly before use. All loose dirt and dust should be removed from the surface to be coated before application.
  • HydroArmor® 7720 is normally applied to all floor surfaces and edges and to wall edges with a roller or brush.
  • HydroArmor® resists water wash-off after air drying 30 minutes at 45% - 55% relative humidity.
  • If not baked, it dries through in 24 hours or less (drying is slowed by high humidity and poor air circulation).
  • Until HydroArmor ® dries, overspray can be removed and equipment can be cleaned with water. Dried material can be removed with methyl ethyl ketone.


Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.19 - 1.25--
Solid Content41 - 45%-
VOC Content80 - 90g/L-
pH9 - 10--
Technical Properties
Property Value
Freeze/Thaw Stability: ASTM D 2243;
4 cycles to -29°C (-20°F)
Sprayable after hand mixing

Technical Details & Test Data

Test Data
The following tests were performed on panels coated with 8 wet mils of material after drying 21 days, at 20°C (68°F), and 50% RH

Effects of Heat Aging:
ASTM C 792; 14 days at 70°C(158°F)

Flexibility maintained
No cracks
No loss of adhesion
Effects of Exterior Exposure:
GMTM 9505P: Cycle E
No cracks
No loss of adhesion after two weeks of cycling
Humidity Resistance:
ASTM D 2247
Blistering rated by ASTM D 714
Adhesion rated by ASTM D 3359
No blistering or softening of film
No loss of adhesion
10 (scale 1 to 10; 10 = best)
5B (scale 1 to 5; 5 = best)
Water Resistance Efficiency
ASTM D 5401
96.7% efficiency
MVSS 302
Self-extinguishing within 1”
MVSS 302
Self-extinguishing within 1”

Packaging & Availability

Regional Availability
  • North America