Gypsum Boards Fire Resistance

Gyproc Fire Resistant Gypsum Boards 12.5mm at Gypsum Ceiling Supplies

Gypsum board systems can provide fire protection up to 180 min. by using the right boards and right thicknesses.

  • Spaces with high fire protection requirements, Fire Resistant Gypsum Board (FR), Fireboard or Aqua panel boards should be used.
  • It is possible to provide high fire protection, Fireboard (A1 fire class) can be used.

The fire resistance of gypsum board can be described using three distinct terms: regular core, type ‘X’ core and improved type ‘X’ core. Regular core gypsum board is made of a noncombustible core material composed mainly of gypsum. Although it does not have the specially enhanced fire-resistivity properties of type ‘X’, regular core gypsum board affords a degree of natural fire resistance.

Buy our fire rated gypsum boards

Fire Safety Building Rules

  • Load bearing building elements should be protected during the min. declared time with their functions.
  • The spread of flame and smoke should be limited.
  • The spread of flame to close buildings should be limited.
  • People who live inside should left the building or can be saved in a different way.
  • Building should be designed to protect rescue squad as well.

Fire Safety Regulations for Buildings

The purpose of this regulation is to ensure the loss of property deflation before and during the fire in public and private institutions, buildings and constructions.

Fire Resistance Period

Protection of a structural component’s integrity and insulation properties are defined as “fire resistance”. Building elements are categorized as the time period of protection of their properties.

The basis characterize of a building element’s fire resistance performance is listed below:

  • R: load bearing capacity
  • E: integrity
  • I: insulation
  • After the R, REI, RE, EI, E letters, fire endurance periods are shown as 15, 20, 30, 45, 60, 90, 120, 180, 240 or 360 minutes.

Example: 155 min. of load bearing capacity, 80 min. of integrity and 42 min. insulation is shown as R 120 / RE 60 / REI 30.

Fire Protection with Dry Wall Systems

Gypsum building materials are inorganic and non-combustible.

Gypsum is included into classical fire protection building materials.

Compared to other building materials, gypsum has 20% crystalized water which means there are three liters crystalized water per 1 m2 15mm thick gypsum board. The water in gypsum vaporizes during fire which delay the fire with the vapor barrier.

Special Products for Higher Demands

Type DF gypsum boards have fiber glass reinforcement in order to provide fire protection.

Fireboard is paper free (on both sides), fiber glass fleece coated gypsum board which provides up to 3 hours fire protection. For further information please view

Gypsum Board is an Effective Fire Barrier

Gypsum board is an excellent fire-resistivity building material. It is the most commonly used interior finish where fire resistance classifications are required. Its noncombustible core contains nearly 21% chemically combined water, as described earlier, which, under high heat, is slowly released as steam. Because steam will not exceed 212 degrees F under normal atmospheric pressure, it very effectively retards the transfer of heat and the spread of fire.

Even after complete calcination, when all the water has been released from its core, gypsum board continues to serve as a heat-insulating barrier. Moreover, tests conducted in accordance with ASTM E 84 show that gypsum board has a low flame-spread index and a low smoke-density index. When installed in combination with other materials in laboratory-tested wall and ceiling assemblies, gypsum board serves to effectively protect building elements from fire for prescribed time periods.