This product is for professional use only. Contractors using this product and any other products in the Nullifire SC900 range must be third party accredited. Due to the specialist nature of these products, prior to first use, manufacturer training must be successfully completed to ensure compliance. Please contact our Technical Team for details on 0113 2455450 (option 2) or send a message to [email protected] before purchasing.
SC902 is a low VOC, one coat, two-pack high build system, based on patented technology to provide a fast cure effective structural fire performance for steelwork, up to a 120 minute fire rating. Can be applied to a smooth matt finish, and a compatible top seal can be applied if a decorative finish is required.
Designed to provide upto 120 minutes fire resistance to ‘I’ section beams, columns, hollow columns, concrete filled hollow columns and cellular beams. As a fast-track coating, all 120 minute loadings are possible to apply in a single coat and weather resistant in one hour.
- Part A: White 22.3 kg pail
- Part B: Translucent Black 2.7 kg tin
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Features & Benefits
- Intumescent steel coating
- Up to a 120 minute fire rating
- Fast cure, even below 0℃
- Touch dry in 1 hour
- Early weather resistance, showerproof within 1 hour
- Self-priming system tolerant of light rusting to steel, up to 2 weeks post blasting
- High build potential with all ratings possible in one application
- Fire rating up to 120 minutes tested to BS476 and EN13381; Part 6 & 8
- Designed for on-site use
Use in well ventilated conditions and ensure all recommended protective equipment is worn during handling & use of this product.
For full recommendation, refer to the safety data sheet, available to download from the "attachments" section above.
Surface Preparation & Priming
No primer required for C1 or C2 environments.
Steelwork should be blast cleaned in dry atmospheric conditions using abrasive of suitable type and size, free from fines, moisture and oil. Continue blasting until finish complies with Swedish Standard SIS 05 59 00, preparation grade SA 2.5 or ISO 8501-1.
Coat blasted steel within 2 weeks. All surfaces to be coated should be clean, dry and free from loose friable materials and any other contaminants likely to impair adhesion.
Nullifire recommends and have tested a number of primers depending on the application. Contact Rawlins Technical Support team on 0113 2455450 (option 2) or send a message to [email protected] for the Approved Primer list.
The system is not suitable for use over single pack primers and compatibility with 2 pack primers should be checked with Rawlins Technical Services. For use over galvanised surfaces or other substrates please contact Rawlins Technical Services.
Ensure adequate through ventilation during application.
Application temperature range -5°C to +35°C, relative humidity <95% and a steel surface temperature at least 3°C above the dew point.
Graco Mark V or equivalent.
Always mechanically mix product in full pack volumes.
Ensure the two components are thoroughly combined until a uniform colour is obtained.
Keep all product containers closed when not in use. Part B is moisture sensitive and should remain tightly closed before use.
The product is self-priming onto correctly prepared steelwork. Damaged primer does not need to be repaired in C1 or C2 environments.
The product should be spray applied at close proximity, approximately 600 mm from the surface, to avoid dusting and promote good surface coalescence.
Use of a wet film gauge is essential.
As a fast-track coating, it is possible to apply single coat thicknesses significantly greater than traditional coatings, up to 10 mm without defect. All 120 minute loadings are possible to apply in a single coat; however, we recommend that the applicator select a target WFT in line with substrate geometry, access and level of finish required for the project.
Note: If the user needs to stop spraying for longer than 15 minutes flushing will be necessary.
Galvanised bolts, once degreased, can be coated with no further preparation.
Damaged coatings can be trimmed to a feathered edge and the material trowelled in one application.
The applied product once cured can be easily finished to a high level, by sanding or tooling with either electrical or hand tools.
Repairs can be carried out using an S900 Repair Kit.
Flush spray equipment with FC150 or an equivalent xylene-based solvent, do not use solvents which contain water, as these can result in premature curing of the product in the spray line. Contact Technical Support if unsure of compatibility of cleaning agents.
Top Seal Requirements
Once DFT’s have been achieved as specified, a Nullifire top seal can be applied. Ensure the SC902 is completely dry before applying top seal. For approved top seals, please consult Nullifire’s Approved Topcoat List.
Maintenance & Repair
Damaged areas should be abraded back to a sound surface. The surface should then be clean and dry before re-applying. The SC900 repair kit should be used (sold separately) for repairing scratches and chips. Once repaired top seal should be re-applied. Refer to Nullifire System SC900 Maintenance Instructions.
||A low VOC, high build formulation based on advanced hybrid technology
|'Prohesion' Cyclic Corrosion test to ASTM G85:2009 Annex A5 At 1000 hours Maximum extent of undercut corrosion 6.00 mm from scribe mark.
|Note: The above test was carried out on a primer-less steel substrate
||Certifire CF5144, BS476 Part 20/21, EN13381:Part 6 & 8 and Cellular Beams YB5
|GOST Russian approval
|Australian standards AS4100 and AS1530
|Japanese standard JIS A1304
|(for other certification requirements, contact Nullifire/Rawlins)
||C1, C2, C3, C4 and C5 environments
|For full details, please consult Nullifire Specification
|Properties (Typical Values)
||Part A: 1.55 +0.02
|Part B: 0.99 +0.01
|Mixed: 1.46 +0.02
||By Weight 100:12
|By Volume 5.6:1
|Gel Time (Liquid to Gel)
|Pot-life or Sprayable Life
||1,750 g/m2 based on an applied 1.00 mm dry film thickness
||Store in secure, dry warehouse conditions between +0°C and +35°C
|Shelf Life (at +20°C)
||12 months when stored as recommended in original unopened container
Once DFT’s have been achieved as specified, TS134 Top Seals can be applied. Ensure the SC902 is completely cured before applying top seal.
|ETAG018: Part 2 Condition
||Description of Environment
|X: Exposed (also qualifies for Y & Z)
||Exposure to rain
||Fully external steelwork, Exposed perimeter steel, Open construction site
||Consult ETA or Nullifire/Rawlins Technical Department
|Exposure to UV
|Y: Semi-exposed (also qualifies for Z)
||Car park, Undercrofts, Areas under a canopy
||Not required (consider other factors)
|No exposure to rain
|Limited exposure to UV
|Z1: Humid internal (also qualifies for Z2)
||Humidity over 85% RH
||Plant rooms, Basements, Warehouse and production
||Not required (consider other factors)
|Temperature above 0°C
|Z2: Dry internal
||Humidity below 85% RH
||Office, Hospitals, Schools, Airports
||Not required, decorative only
|Temperature above 0°C
Optifire+: Reliable and traceable fire protection
Optifire+ is a unique addition to Nullifire intumescent steel coatings that provides full transparency for:
- Applicators – Ability to ensure product installed on site is correct and to standards
- Main Contractors - Ability to ensure that specifications are been adhered to
- Architects and Specifiers - Ensuring your design projects comply to the latest building regulations and fire protection that is identifiable in future years
What is Optifire+ and how does it work?
Optifire+ is a unique and impossible to manipulate pigment. With Optifire+ we can be sure, at any time after the project is completed, that the product specified is the product applied – confidence that the materials submitted through the approval processes are installed to protect customer's assets.
Optifire+ is invisible to the naked eye and is added to Nullifire intumescent steel coatings. It can be identified with the traceability tool.
Why it’s important
As a product identifier, Optifire+ doesn’t change the way intumescent coatings work. But it does stimulate that they are used and are applied correctly. Nullifire intumescent steel coatings can’t be altered without it being visible and application can be checked afterwards.
With Optifire+, Nullifire goes beyond what’s expected and further endeavors to keep residents and emergency services safe, and protect the buildings that they rely on.
Optifire+ is manufactured within the UK. These locally produced products are independently tested and certified according to the highest standard in the industry.
Building owners are now more than ever been urged to act and put the safety of residents first. There’s an increased focus and scrutiny on the effectiveness of fire protection strategies in commercial and residential buildings. Negligence or simply being unable to prove that the proper precautions have been taken means risking legal action.
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.