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INTUMESCENT PAINT FOR STEEL & CAST IRON

Trade Name: ASTRO ISS PAINT


protective fire varnish

Intumescent Paint for Structural Steel and Cast Iron

Conforms to BS476 Part 21:
Fire resistance for load bearing elements of structure

Rated for 30, 60 and 90 minutes.

Available in wide range of finishes.

Brush, roller or airless spray application.

Description

ASTRO ISS Paint is an intumescent coating for steel, a thin decorative fireproof paint system providing fire resistance to structural steel and cast iron.

Heat from a fire triggers a catalytic reaction causing intumescence (expansion) of an insulating char layer up to 50 times the paint film thickness. This char keeps the steel below critical temperature to maintain the structural stability of the building.

Fire resistance of ½ hour and 1hour can be achieved with a single applications of ASTRO ISS Paint. 1½ hour fire resistant can be achieved with two coats of ASTRO ISS Paint.

Availability

A range of hard, high quality, weather resistant decorative finishes matches the decor, architectural or historic features of a building while helping to make it a safer structure.

Available in BS4800, RAL  and metallic colours and a non decorative finish for unexposed areas.

Eggshell............... BS4800 + RAL.
One-coat gloss..... BS4800 + RAL.
Metallic................ Steel, gunmetal, rust, silver, gold.
Non decorative..... N/A - For dry, hidden areas only.

ASTRO ISS Paint is available in 5 kilo and 20 kilo containers
ASTRO FR PAINT (flame retardant topcoat finish) is available in 2.5 and 5 Litre  containers.

To Order & Specify

We are happy to provided specifications and quotations - please use our structural steel specification form to ensure we cover all apects of your fire protection and decorative  requirements in our quote. We accept any order size.

Prior to application the contractor should contact the Astroflame Technical Department (see above) to obtain a basecoat application schedule.

 

Fire Tests

Certificate of Supply upon request for each project for Insurance, Fire and Building Control Authority and Client Records.

 

 

 

 

Application

Steel and cast iron should be free from rust and millscale and primed with ASTRO HBP high build primer 75 microns DFT or other primer compatible with intumescent paints. Galvanized steel or Stainless Steel should be degreased and then primed with a suitable primer.

We recommend the use of airless spray equipment for large areas
Graco 5000 or 7500
Filter size 30 mesh
10mm hose with no whip end
Tip size : 317-319 (6" fan) - Narrow surfaces 417-419 (8" fan) - Broad surfaces
Cleaner: solvent or water depending on paint type.


Max. Relative Humidity 80%.
Min. Temperature 6°C.
Min. Surface Temperature 3°C above dew point
Max Thickness per coat; brush 600 microns
Max Thickness per coat; spray 2000 microns (S)
Max Thickness per coat; spray 1400 microns (W)

The paint can also be applied by brush or roller.

Minimum drying times:

Brush/roller

Spray

Surface Dry

2hrs

4hrs

Recoat

4hrs

10hrs

Overcoat with ASTRO FR decorative finish

10hrs

48hrs

 

Health and Safety

Observe all normal health and safety precautions for painting including ventilation, hygiene and masks and protective clothing as appropriate.