A heavy-duty coating system for demanding environments

By Dani Sheehan. 

Whether you’re protecting a concrete slab in a mechanical room or finishing a floor in an aircraft hangar, this system delivers strength, chemical resistance and flexibility. 

In high-impact industrial environments like aircraft hangars and mechanical rooms, floors take a beating. The Armor-Rez Jet Deck 300 System by APF Polymer Surfaces is designed to meet UFGS (Unified Facilities Guide Specifications) requirements for heavy-duty flooring. This five-layer coating system is engineered for durability, chemical resistance and long-lasting performance. 

Armor-Rez Jet Deck 300 is a multi-layer epoxy and urethane flooring system with a total thickness of approximately 3/16” to ¼". It’s specifically designed for use in aircraft maintenance hangars and other heavy-duty industrial environments where superior abrasion and chemical resistance are required. 

Built from the ground up, the system uses a five-coat application to ensure surface performance and substrate protection. From primers to topcoats, each component plays a role in the system’s strength, flexibility and chemical durability. 

System components at a glance 

1 – Patching material: Epoxy 300 FLEX 

Epoxy 300 FLEX is a 100% solids, medium-viscosity flexible epoxy with excellent elongation, hardness and impact resistance. It forms a tenacious bond to concrete and performs well where vibration, thermal cycling or surface movement might compromise rigid systems. A fast cure version is available for cold weather or accelerated applications. For joint and crack repair, Epoxy 300 FLEX Paste offers a thickened alternative. 

• Flexible underlayment for other floor systems 
• Performs in dynamic environments 
• Cold temperature cure down to 40°F 

2 – Primer: Epoxy 400 

The foundation of the system is APF Epoxy 400, a low-viscosity, 100% solids epoxy resin known for its substrate adhesion and application versatility. It’s used across a variety of flooring systems and performs especially well with aggregate-filled or decorative installations. Options include a fast cure version for colder climates or a UVR version for added UV protection. 

• May be used as a primer, finish coat or aggregate binder 
• Strong substrate hide and color consistency 

3 – Mortar base: Epoxy 400 

The mortar layer uses the same durable Epoxy 400 resin, typically mixed with aggregate to create a high-build, impact-resistant base. Its low viscosity allows for easy filler incorporation and smooth installation. This layer provides mechanical strength and levels the floor before applying additional coats. 

• Ideal for slurry and aggregate-filled systems 
• Fast Cure and UVR versions available 

4 – Grout coat: Epoxy 400 Thixotropic 

APF Epoxy 400 Thixotropic is a high-viscosity version used to grout aggregate-filled systems and create uniform finishes. It’s also well-suited for cove bases and wall rendering, offering excellent chemical resistance and consistency. Fast cure and UVR versions are also available for accelerated or exposed installations. 

• Orange-peel finish in stand-alone applications 
• Good substrate hide and color uniformity 
• Bonds well in damp conditions with special hardeners 

5 – Topcoat: Polyurethane 100 or Polyurethane 100 VOC 

The system is finished with one of two high-gloss, chemical-resistant polyurethane options: 

• Polyurethane 100: Delivers hardness, flexibility, UV resistance and durability in exterior or high-light environments 
• Polyurethane 100 VOC: Meets VOC regulations for states like California while delivering similar performance 

Both offer graffiti resistance when used on wall surfaces, and an optional satin finish is available. A curing accelerator is recommended when faster turnaround is needed. 

• Resistant to fuels and many chemicals 
• Easily cleaned, hard surface with gloss or satin finish 
• Durable enough for high-traffic and exterior use  

Original image source: APF Polymer Surfaces