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Qingdao Tennry Carbon Co., Ltd.
Qingdao Tennry Carbon Co., Ltd.
  • intumescent fire sheets wholesale manufacturers
  • intumescent fire sheets manufacturers
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  • intumescent fire sheets wholesale suppliers
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Intumescent Fire Sheets

White fireproof board is a high-performance inorganic composite for fireproofing and thermal insulation. Made from sodium silicate-based inorganic ingredients, it expands 8-15 times at 100-120°C with high expansion pressure to form dense non-combustible foam layers. Smoke-free, non-toxic and asbestos-free, it seals gaps to resist flame and heat. It allows easy cutting and punching, with optional self-adhesive backing. Custom sizes are offered, specially engineered for Class A fire-rated doors.


Specifications of Intumescent Fire Sheets


Model

Size

Density

Expansion times

Initial temperature

Expansion pressure

Packaging

FSBZ100

2000*1000*1.9mm

1620kg/m3

8-15times

100-120℃

0.9-1.5N/mm2

100pcs/box

FSBZ104

2000*1000*3.6mm

1700kg/m3

8-15times

100-120℃

0.9-1.5N/mm2

50pcs/box


Products

Features of Intumescent Fire Sheets

Sensitive Low-Temperature Expansion
Superior Fire & Heat Insulation Performance
Safe and Eco-Friendly
Easy Processing and Installation
Flexible Structural Options
Strong Environmental Durability
Practical Usability
Features of Intumescent Fire Sheets
Sensitive Low-Temperature Expansion

Initiates effective thermal expansion at 100–120°C, with a volumetric expansion ratio of 8–15 times and a maximum expansion pressure of 1.5 N/mm². It quickly fills component gaps to form a tight seal in case of fire.


Features of Intumescent Fire Sheets
Superior Fire & Heat Insulation Performance

Forms a rigid, high-strength non-combustible foam layer after expansion. It effectively blocks flame penetration and heat transfer, and releases water vapor during heating to achieve a prominent heat-absorbing and cooling effect.


Features of Intumescent Fire Sheets
Safe and Eco-Friendly

As an asbestos-free material, it produces no toxic gas, no smoke and no debris shedding in fire conditions, fully meeting environmental protection and building safety standards.


Features of Intumescent Fire Sheets
Easy Processing and Installation

It can be freely cut and punched at 20–40°C ambient temperature, supporting flexible on-site construction. Custom cut-to-size processing is available.


Features of Intumescent Fire Sheets
Flexible Structural Options

Provided in two types, with or without high-quality pressure-sensitive adhesive backing, adapting to different installation scenarios.

Features of Intumescent Fire Sheets
Strong Environmental Durability

The epoxy coating resists most acids, alkalis, salts and organic solvents. It maintains stable performance in a wide temperature range with long service life and durable bonding effect.


Features of Intumescent Fire Sheets
Practical Usability

The slim structure does not affect the normal opening and closing of doors after standard installation.

Applications of Intumescent Fire Sheets

Tailored for fireproof sealing and thermal insulation of building fire protection components, the product is specially applicable to Class A fire-rated doors and widely used in various civil and commercial building scenarios with high fire safety requirements.

  • Fire door systems: Ideal for gap sealing and heat insulation of wooden fire doors, steel fire doors and supporting door frames, filling assembly joints of door components.

  • Public & commercial buildings: Widely applied in fire isolation projects of office buildings, shopping malls, hotels, hospitals, schools and other public places.

  • Building fire compartmentation: Used for sealing gaps and joints of building fire separation components to prevent the spread of flame, smoke and heat between functional areas.

  • Residential fire protection: Suitable for fireproof and heat insulation treatment of residential fire-rated entrance doors to improve household fire safety performance.


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