HB999-FR0S Fire-Resistant Zero-Smoke Coating | A Class A1 Non-Combustible Barrier for Lower-Smoke Fire Safety

When Fire Occurs, Protection Must Go Beyond Flame Resistance

In tunnels, underground car parks, escape routes, industrial facilities and public buildings, fire risk is not defined by flame alone. Dense smoke, molten drips, irritant combustion gases and coating failure in damp environments can all make evacuation and emergency response substantially more difficult.

HOUSEBOAT HB999-FR0 Fire-Resistant Zero-Smoke Coating is a water-based, purely inorganic coating engineered for demanding architectural fire-protection applications. Its performance profile is positioned around Class A1 non-combustibility, Class S1 smoke performance, Class D0 freedom from flaming droplets/particles, and the stated T0/ZA1 smoke-toxicity classifications. Designed to withstand high-temperature flame exposure above 1200°C, it also delivers moisture and alkali resistance, strong substrate adhesion and efficient application.

Non-Combustible Coating Performance

With its Class A1 non-combustibility positioning, HB999-FR0 is designed so the coating does not become a combustible load or contribute to flame propagation when exposed to fire. According to the product data, the coating is designed to withstand high-temperature flame exposure above 1200°C.

Low-Smoke Performance When Visibility Matters

The stated Class S1 smoke-performance classification is intended to minimise visible smoke generation under high-temperature flame exposure. In underground and enclosed environments, maintaining usable visibility is central to evacuation and emergency response.

No Flaming Droplets or Particles

The stated Class D0 classification addresses the risk of molten or flaming droplets under high heat. Product information indicates that the dry film can retain its structural integrity after high-temperature combustion, without chalking or peeling.

Reduced Smoke Toxicity Profile

The product data cites GB 8624-T0 and Quasi-Safety Grade ZA1 smoke-toxicity performance. For any specific project, compliance must be confirmed against the applicable local code, specified test method and issued test reports.

Moisture and Alkali Resistance

Having passed 168-hour water- and alkali-resistance testing, HB999-FR0 is suited to damp and low-light construction environments such as escape passages, tunnels and underground parking facilities.

Water-Based, Purely Inorganic System

HB999-FR0 uses a low-carbon, water-based inorganic system. The product data states that it is benzene-free, formaldehyde-free and zero-VOC. Before interior use, verify all VOC and material-approval requirements applicable to the project location.

Adhesion Across Multiple Building Substrates

The coating is intended for concrete, natural stone, ceramic tiles and fire-resistant calcium-silicate boards. Product information indicates direct application without a dedicated matching primer; substrate assessment and a small-area trial application should still precede full-scale work.

Fast Drying, Multiple Application Methods

HB999-FR0 can be brush-applied, roller-applied or airless-sprayed. Its fast surface-dry profile helps shorten intercoat waiting time and supports efficient sequencing on larger projects.

Non-combustibility classification

Smoke performance classification

Flaming droplets/particles classification

Smoke-toxicity performance

High-temperature flame exposure

Water & alkali resistance

Environmental profile

Recommended total dry-film thickness

GB 8624-T0；ZA1

Above 1200°C

168 h tested

Benzene-free, formaldehyde-free, zero VOC

≥90 μm

Fire escape passages
Tunnels
Underground parking facilities
Electrical equipment areas
Chemical plants
Underground utility galleries
Fire-resistant calcium-silicate board systems
Commercial and public buildings
Student residence corridors and common areas
Kindergarten and educational-facility common areas

Painting Process

Paint Code

Recommended No. of Coats

Film Thickness Requirement

Paint Consumption

Primer

Topcoat

HB999-FROS-01B

HB999-FROS-02T

0–1 coat

1–2 coats

Approx. 45 μm

8–10 m²/kg/pass