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Product images: the manufacturer (official).
SFRM · gypsum-based
Gypsum-based sprayed fireproofing
A lightweight gypsum spray for interior beams, columns and decks hidden behind ceilings and linings.
- Gypsum
- Binder
- Interior, dry, concealed
- Exposure
- Per listed design
- Rating
Supplied by World Steel with your steel building or on its own – one order, one shipment, one partner.
Overview
About Gypsum-based sprayed fireproofing
Gypsum-based SFRMs are sprayed onto clean steel and decks; thickness and density are set by the listed design or tested data for each member and rating.
They are for dry interior conditions – humidity, weather and impact need cementitious or high-density products.
Thickness and density are checked in place to ASTM E605 and bond to ASTM E736.
Key benefits
- Light weight on the structure
- Fast application on large areas
- Covers complex connections
- Economical for long ratings
World Steel · building envelope hub
How we use Gypsum-based sprayed fireproofing in steel buildings
World Steel coordinates surface preparation and primer compatibility with the sprayed system.
Product-specific test reports, classification reports and certificates are supplied for the product selected for each project – this page describes the product type, not a certified product.
- 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 Gypsum-based sprayed fireproofing is used
- Concealed beams and columns in offices
- Steel decks above ceilings
- Commercial high-rise frames
Technical data
Gypsum-based sprayed fireproofing – technical properties
Typical properties and standards
| Property | Unit | Value |
|---|---|---|
| Test methods | — | ASTM E605 · ASTM E736 · UL 263 / ASTM E119 · EN 13381-4 |
| Exposure | — | Interior, dry, not exposed to impact |
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 · exposed and industrialMedium- and high-density cementitious sprayView product →SFRM · medium densityMedium-density cementitious sprayView product →SFRM · lightweightVermiculite / perlite sprayView product →← Cementitious and mineral spraysSprayed Fire-Resistive Materials (SFRM) →
FAQ
Frequently asked questions
Is gypsum-based spray suitable for exposed steel?
No – it is for concealed, dry interior steel. Exposed or humid areas need cementitious or high-density systems.
Is this product certified?
Certification belongs to a specific manufacturer’s product or tested system. We supply the test report, classification or listing accepted in your market for the product selected – it is confirmed per project, never assumed.
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.