fireproofing

fireproofing — noun

1. a substance or coating that is put onto or into a surface to stop it from burnin

1.nounB2
Definition

a substance or coating that is put onto or into a surface to stop it from burning or to slow the spread of flames

Example

The builders sprayed fireproofing onto the steel beams inside the new library.

collocation: spray fireproofing onto [surface]

Old wooden houses often need extra fireproofing to meet modern safety rules.

Common collocations
  • spray fireproofing
  • apply fireproofing
  • fireproofing material
  • fireproofing layer
  • add fireproofing
Synonyms
  • fire retardant

    more specific to chemicals that resist fire; 'fireproofing' is a broader term for any material

  • flame retardant

    commonly used for coatings on fabrics and furniture; overlaps with fireproofing

  • insulation

    focuses on heat retention, but some types also offer fire protection

Usage Note

Uncountable when referring to the material in general, but countable when specifying a particular type or brand of fireproofing substance.

Common Mistakes

The house needs a fireproofing.
The house needs fireproofing.
In this sense, fireproofing is usually uncountable; do not use 'a' unless referring to a specific type.

2. the activity of adding fire-resistant substances to a structure or object to pro

2.nounB2
Definition

the activity of adding fire-resistant substances to a structure or object to protect it from fire damage

Example

Fireproofing of the school's walls was finished just before the winter break.

fireproofing of [structure]

A local company offers fireproofing services for restaurants and hotels in the area.

Common collocations
  • fireproofing work
  • fireproofing service
  • do fireproofing
  • complete fireproofing
  • fireproofing of
Synonyms
  • fire protection

    broader term; includes systems like sprinklers, not just coating

  • fire treatment

    refers specifically to applying chemicals; less common in everyday use

Usage Note

Distinguishes the process from the material (sense 1). Frequently found in construction and safety inspection contexts. Often followed by 'of + [building/area]'.

Common Mistakes

We need to buy fireproofing for the roof.' (when meaning the material)
We need to do fireproofing on the roof.
Use this sense only when describing the act or process, not the substance.

Word family

Synonym discussion

Sense: noun/1

All three terms refer to materials that resist fire, but they differ in scope and use. 'Fireproofing' is the most general term for any substance or coating applied to a surface to stop fire from spreading. 'Fire retardant' and 'flame retardant' are more specific — they describe chemicals that slow or stop fire, and are often used for fabrics, furniture, and plastics rather than structural surfaces. 'Insulation' is primarily about keeping heat in or out; while some insulation materials (like mineral wool) also offer fire resistance, not all insulation is fireproofing. For example: 'They added fireproofing to the steel supports' sounds natural, while 'They added flame retardant to the steel supports' is less typical. Use 'flame retardant' when talking about sofas, curtains, or children's clothing.

fire retardantflame retardantinsulation ↗

Common collocations

Nouns

  • fireproofing work
  • fireproofing service
  • fireproofing cost
  • fireproofing requirement

Phrases

  • spray fireproofing onto
  • apply fireproofing to
  • add fireproofing to

Prepositions

Etymology

Old EnglishEnglish

The word 'fireproofing' was formed in the early 20th century by combining 'fireproof' (the adjective meaning 'resistant to fire', which itself dates from the late 1700s) with the suffix '-ing', which turns the adjective into a noun referring to the material or process. 'Fireproof' is a compound of 'fire' (from Old English 'fyr') and 'proof' (from Old English 'prōf', meaning 'able to withstand').