ENEnglish
VITiếng Việt
ZH中文
KO한국어
JA日本語
FRFrançais
ITItaliano
PTPortuguês
ESEspañol
HEעברית
ARالعربية
Product images: the manufacturer (official).
SFRM · lightweight
Vermiculite / perlite spray
Light mineral sprays based on exfoliated vermiculite or perlite – fire protection for steel and concrete soffits with a textured finish.
- Vermiculite / perlite
- Base
- 1 – 4 h
- Typical rating
- Interior
- Exposure
Supplied by World Steel with your steel building or on its own – one order, one shipment, one partner.
Overview
About Vermiculite / perlite spray
Exfoliated vermiculite or perlite with a cement or gypsum binder, sprayed onto steel or concrete.
Light weight – small additional load on the structure.
Thickness per tested design.
Key benefits
- Light weight
- Also improves thermal insulation of soffits
- Good adhesion to steel and concrete
- Textured finish
World Steel · building envelope hub
How we use Vermiculite / perlite spray in steel buildings
World Steel coordinates sprayed fire protection with the steel: compatible primers, clean surfaces and member-by-member thickness schedules from the fire design.
- 01Specified with the structure – thickness, density and facing matched to the roof, wall and fire design.
- 02Quantities taken from the same 3D model as the steel, purlins and cladding.
- 03Packed and shipped with the steel package – one delivery schedule to site.
Applications
Where Vermiculite / perlite spray is used
- Steel beams and columns
- Concrete soffits and car park ceilings
- Industrial roofs and decks
Technical data
Vermiculite / perlite spray – technical properties
Typical properties
| Property | Unit | Value |
|---|---|---|
| Base material | — | Exfoliated vermiculite or perlite + binder |
| Typical rating range | h | 1 – 4 |
| Test standards | — | EN 13381-4 / -3 · ASTM E605 · UL 263 |
Values as published by the manufacturer for this market. Always check the current data sheet and the approvals required for your project before ordering.
Sprayed fire-resistive materials
Related products
SFRM · concealed steelLow-density cementitious sprayView product →SFRM · gypsum-basedGypsum-based sprayed fireproofingView product →SFRM · exposed and industrialMedium- and high-density cementitious sprayView product →SFRM · medium densityMedium-density cementitious sprayView product →← Cementitious and mineral spraysSprayed Fire-Resistive Materials (SFRM) →
FAQ
Frequently asked questions
What thickness of vermiculite / perlite spray do I need?
It depends on the member size (section factor), the critical temperature and the required fire rating – the fire engineer or the manufacturer's tested data gives a thickness for each member.
Does World Steel supply branded products?
Yes – we supply the brand and listed system your specification or authority requires. This page describes the product type.
One partner for structure and envelope
Send us your drawings or bill of quantities – we quote the steel, insulation, boards and ceilings together and ship them as one package.