Nullifire SC900 On-Site Intumescent Steel Coating Repair Kit

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 technical@rawlinspaints.com.
The Nullifire SC900 On-Site Intumescent Steel Coating Repair Kit enables seamless repairs to accidental damage in isolated areas in order to preserve fire integrity, such as long-term repairs to accidental damage caused to an SC901 or SC902 coating.
The repair kit can be applied to a smooth matt finish and a compatible top seal can be applied if a decorative finish is required. Low VOC and no solvent entrapment or prolonged solvent odour.
Part A (4.2 kg) and Part B (0.5 kg) supplied as a 4.7 kg kit.

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Features & Benefits
Protective Equipment
Surface Preparation & Priming
Application Conditions
Application Equipment
Mixing
Application
Drying Times
Application Advice
Cleaning
Transportation
Maintenance & Repair
Technical Data

Features & Benefits

Intumescent steel coating repair kit
Up to 120 minutes fire resistance
Can be applied to a smooth matt finish
A compatible top seal can be applied if a decorative finish is required
Allows high quality fast cure repairs to SC901 and SC902 coated surfaces
Maintains the integrity of the original coating even after the repair
Same fast cure properties as the original material
Repairs can be done at low temperatures and are weather resistant
Suitable for treating scratches, grazes, indentations and minor abrasions
Low VOC and no solvent entrapment or prolonged solvent odour.

Protective Equipment

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 that can be downloaded from the “attachments” section above.

Surface Preparation & Priming

If original surface was unprimed, then no primer is required.
Any damaged primer will need to be spot repaired with a compatible approved system and allowed to dry.
This may facilitate the further removal of a basecoat layer.
All edges must be feathered to prevent isolated cracking once the repair is complete.

Application Conditions

The damaged area should not exceed 150 mm x 150 mm.
Temperature should be above 0°C.

Application Equipment

Paint Brushes (Various Sizes)
Pallet Knife- Used for mixing materials
Filling Knife- Used for applying Filler System
Scraper- Used for removing loose materials
Float- Used for filling and smoothing materials
Window Scraper- Used for removing rough edges or protrusions
Sand Paper (Various Grades)
Sanding Block
Nullifire SC900 Series Repair Kit
Primer (As per original specification)
Top Seal (As per original specification)

Mixing

Mix the Part B into the Part A container using a pallet knife until a uniform colour is obtained. Always mix the whole container.

Application

To reinstate the basecoat to its original thickness use the most appropriate method for the size and type of damage.
Mixed SC900 should be worked into the damaged area and let slightly proud of the surrounding surface to minimise work when cured.
The SC900 will shrink by about 10% after application.

Drying Times

All areas should be allowed to dry as per the original SC901 or SC902 for a minimum of 4 hours.

Application Advice

It is recommended that for areas of high aesthetic appearance, further preparation is undertaken.
This may involve using a window scrapper to smooth out surface abrasions.
SC900 repair filler can easily be sanded by hand or mechanical sander to provide a flat finish.

Cleaning

Excess sealant can be cleaned or removed with soapy water before sealant skins. Clean spray equipment with soapy water and as per manufacturer instructions.

Transportation

SC900 is compliant with the exemption for all shipping by road (ADR 2.2.3.1.5), as a Class 3 ‘flammable liquid’ under the dangerous goods regulations.

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 for repairing scratches and chips. Once repaired, the top seal should be re- applied. Refer to Nullifire System SC900 Maintenance Instructions.

Technical Data

Property
Result

Composition
A low VOC, high build formulation based on advanced hybrid technology

Performance

‘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

Certification
BS476 Part 2- 1987 and EN13381:Part 8

Building Classification
C1, C2 and C3 environments

For full details, please consult Nullifire Specification

Properties (Typical Values)

Voc
137 g/litre

Mix Ratio
By weight 100:12

By volume 5.6:1

Theoretical Coverage
1,750 g/m2 based on an applied 1.00 mm dry film thickness

Storage
Store in secure, dry warehouse conditions between +0°C and +35°C

Shelf Life (at +20°C)
9 months when stored as recommended in original unopened container