01D / PL

Cementitious Fireproofing

Cementitious and spray-applied fire-resistive material for structural protection, repair and reinstatement.

Technical scope

High-yield spray-applied fire-resistive materials with density and bond verification.

Cementitious fireproofing and spray-applied fire-resistive materials (SFRM) deliver cost-effective, high-durability thermal barriers for structural steel frames, concealed building infrastructure, and industrial support structures.

Formulated with Portland cement or gypsum binders combined with lightweight aggregates such as vermiculite or perlite, cementitious coatings provide reliable cellulosic fire ratings from 1 to 4 hours without requiring tight atmospheric humidity controls during application.

Vortexen coordinates substrate preparation, rust-inhibitive primer verification, mechanical lath and carbon-steel mesh reinforcement for exposed flanges, controlled water-to-powder mixing ratios, and mandatory post-application testing including in-situ dry density (ASTM E605) and field cohesion/adhesion bond strength (ASTM E736).

Build-upDesign-led

BondSubstrate-led

QA/QCTestable

01 / Buyer outcome

What this route should produce

Defined substrate and reinforcement route
Controlled mixing and application
Thickness and density evidence
Repairable, maintainable finish

02 / Required inputs

What we need to qualify it

Structural drawings
Required rating
Exposure classification
Surface and primer condition
Reinforcement detail
Access and programme

01 / Scope

What the route can cover

Concealed structural steel beams, columns, and metal decking
Industrial pipe racks, vessel skirts, and plant frames
Low, medium, and high-density spray-applied formulations (SFRM)
Galvanized or carbon-steel expanded metal lath and mesh reinforcement
Substrate cleaning, blast profiling, and primer compatibility checks
Controlled continuous mechanical mixing and pumping
Dry density measurement according to ASTM E605
Field adhesion/cohesion bond strength testing to ASTM E736
Surface sealant and topcoat application for high-humidity areas

02 / Delivery route

How work moves forward

Confirm design and substrate route
Prepare surfaces and reinforcement
Control material mixing and application
Cure and protect finished work
Test, rectify and document

03 / Evidence expected

What buyers should expect

Approved system data
Batch and mixing logs
Thickness map
Density or bond testing where required

Commercial and technical guardrails

What this route refuses to hide.

Fast progress is valuable only when assumptions, responsibility and limitations remain visible to the buyer and delivery team.

01No application to contaminated substrate
02No omitted mesh where designed
03No uncontrolled water ratio
04No premature exposure or damage

Send the scope, drawings and decision deadline.

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