Intumescent Coating | Products Range | System S

The Nullifire System S range of 6 basecoat systems offers unrivalled choice and performance for the protection of all structural steelwork.

Complete Water-borne range of coatings providing 30, 60, 90 and 120 minutes protection.
Complete solvent-borne range of coatings providing 30, 60, 90 and 120 minutes protection.
On-site and off-site application
For internal and external steelwork

VERSATILE SYSTEMS WITH PROVEN PERFORMANCE

All systems are independently tested and certified to BS 476 Part 20-21: 1987 and ASFP ‘Yellow Book' approved 30, 60, 90 and 120 minutes protection.
Smooth, robust, decorative surface enables the architect to use the structural steelwork as an integral part of the building design.
Maximum protection from a space-saving thin film. Hi-Build technology means many applications only require a single coat.
Top Seal not required in non-decorative areas of C1 and some C2 buildings.

SYSTEM S RANGE

Product	Types	Application		Colour	Steel Type	Fire Rating
S605	Solvent based	Internal & external	On-Site & Off-Site	Pale Green	Universal & hollow	30, 60, 90, 120 minutes
S606	Solvent based	Internal & semi exposed	On-Site & Off-Site	Pale Pink	Universal & hollow	30, 60, 90, 120 minutes
S706	Solvent based	Internal & semi exposed	On-Site & Off-Site	White	Universal	30, 60, 90 minutes
S607HB	Water based	Internal	On-Site & Off-Site	White	Universal & hollow	30, 60, 90 minutes
S707-60	Water based	Internal	On-Site & Off-Site	White	Universal & hollow	30, 60, 90 minutes
S707-120	Water based	Internal	On-Site & Off-Site	Light Grey	Universal & hollow	60, 90, 120 minutes

For guidance on which Intumescent Coating to use go to our Product Selector page.

THINNER FILM, FASTER APPLICATION
The Hi-Solids content of System S Basecoats enables equivalent fire protection to be achieved with a thinner film, which is faster drying:

Reducing application time
Reducing overall site costs
Reducing risks to other trades and the general public

SMOOTH, ROBUST FINISH
System S Basecoats provide an ideal base for decorative top seal finishes. However, the robust quality of the surface also means a top seal is not required in non-decorative areas of C1 and some C2 buildings.

Exceptional versatility
No need for top seal in non-decorative areas
Smooth, fibre-free surface
Easy to clean and maintain

PROTECTION – AND DECORATION
System S intumesent basecoats provide a durable and attractive surface, similar to a paint finish. However, in a fire they expand to many times their original film thickness. This provides an insulating foam-like coating or ’char’ to protect steelwork against heat build-up and the effects of fire.

Nullifire System S Basecoats form part of a 3-layer system which consists of :

Primer
To protect the steel against corrosion and prepare the surface. This provides a key for the application of the basecoat.

Basecoat
Applied to a measured thickness to provide the specified level of fire protection.

Top Seal
A hard decorative finish to seal in the basecoat and provide an attractive, high quality appearance.

PRIMER AND TOP SEAL COMPATIBILITY
It is vital that both the Primer and Top Seal are compatible with the Basecoat to ensure the integrity of the system in terms of fire performance and longevity.

A fully tested range of Nullifire Primers and decorative Top Seals is available. For details, see:

In addition, Nullifire has tested and approved a range of general primers and top seals for compatibility with System S Basecoats. It is vital to check over-coat periods and other relevant data with the coating manufacturer. It is advised that a primer and top seal compatibility check is carried out prior to application.

If you have any concern regarding the compatibility of specific primers or top seals with System S Basecoats, please contact Nullifire Technical Services Department.

APPLICATION
System S Basecoats are ready for use (requiring no thinning) and easy to spray. Conventional airless manual or automated spray systems may be used. They may also be applied by roller or brush, using a ‘laying on’ technique to avoid heavy brush marks.

LOADING TABLES
Loading tables for all Nullifire System S Basecoats are available. These provide all the relevant information regarding section factors, material thickness and performance. Please refer any factors outside the given range to Nullifire Technical Services Department.

Intumescent Coating | Products Range | System S

VERSATILE SYSTEMS WITH PROVEN PERFORMANCE

SYSTEM S RANGE

THINNER FILM, FASTER APPLICATION The Hi-Solids content of System S Basecoats enables equivalent fire protection to be achieved with a thinner film, which is faster drying:

SMOOTH, ROBUST FINISH System S Basecoats provide an ideal base for decorative top seal finishes. However, the robust quality of the surface also means a top seal is not required in non-decorative areas of C1 and some C2 buildings.

Primer To protect the steel against corrosion and prepare the surface. This provides a key for the application of the basecoat.

Basecoat Applied to a measured thickness to provide the specified level of fire protection.

Top Seal A hard decorative finish to seal in the basecoat and provide an attractive, high quality appearance.

PRIMER AND TOP SEAL COMPATIBILITY It is vital that both the Primer and Top Seal are compatible with the Basecoat to ensure the integrity of the system in terms of fire performance and longevity.

APPLICATION System S Basecoats are ready for use (requiring no thinning) and easy to spray. Conventional airless manual or automated spray systems may be used. They may also be applied by roller or brush, using a ‘laying on’ technique to avoid heavy brush marks.

LOADING TABLES Loading tables for all Nullifire System S Basecoats are available. These provide all the relevant information regarding section factors, material thickness and performance. Please refer any factors outside the given range to Nullifire Technical Services Department.