INTERCHAR 1260

What is INTERCHAR 1260 and why choose it?

INTERCHAR 1260 from International Marina is a single-component, water-borne intumescent coating designed for on-site application to interior exposed structural steel requiring protection from cellulosic fire. The formulation is borate free, chlorine free and APEO free, providing a low-VOC solution for passive fire protection.

The product has been independently tested at accredited laboratories in accordance with BS476 Parts 20-21, EN 13381-8 and EN 13381-6:2012, as well as Australian Standards AS1530.4 (2014) and AS 4100. It is CE-marked and covered by European Technical Assessment ETA-20/1191, giving documented performance and traceability.

INTERCHAR 1260 provides up to 60 minutes of cellulosic fire protection for a wide range of I-section beams, columns and hollow sections in interior environments, and up to 90 minutes fire protection to BS476 Parts 20-21 and 120 minutes fire protection to EN 13381-6:2012 for concrete filled hollow sections. Its high volume solids and optimised application characteristics make it suitable for efficient, high-build application by airless spray.

Main features

• Water-borne, single-component system – easy to mix and apply; no separate hardener required.
• Fire performance:
  • Up to 60 minutes cellulosic fire protection on a wide range of I-section beams, columns and hollow sections in interior environments.
  • Up to 90 minutes fire protection to BS476 Parts 20-21 for specified configurations.
  • Up to 120 minutes fire protection to EN 13381-6:2012 for concrete filled hollow sections.
• Certified and third-party assessed – independently tested to BS476 Parts 20-21, EN 13381-8, EN 13381-6:2012, AS1530.4 (2014) and AS 4100; CE-marked with European Technical Assessment ETA-20/1191.
• Low VOC water-borne technology – 0 g/kg VOC under the EU Solvent Emissions Directive and 23 g/L under the EU Product Directive.
• High volume solids – 73% ± 2% volume solids for efficient film build and coverage.
• High-build intumescent – typical dry film thickness range 200–700 microns (8–28 mils) in a limited number of coats when applied by airless spray.
• White matt finish – provides a neutral, matt appearance; topcoats can be added where required for aesthetics or additional protection.
• Application methods – optimised for airless spray; brushing is suitable for small areas and detailing.
• Compatible systems – can be applied over a wide range of approved anti-corrosive primers and can be overcoated with selected decorative and protective topcoats.
• Designed for interior, non-exposed steelwork – intended for internal structural steel in conditions not subject to weathering or frequent water immersion.

Technical specifications

• Product type: Water-borne intumescent coating, single component.
• Colour: White.
• Finish: Matt.
• Intended substrates: Interior exposed structural steel (I-section beams and columns, hollow sections, concrete filled hollows) prepared and primed in accordance with recommendations.
• Volume solids: 73% ± 2% (ISO 3233, BCF Guidance Method).
• Typical dry film thickness (DFT): 200–700 microns (8–28 mils).
• Typical wet film thickness (WFT): 274–959 microns (11–38.4 mils).
• Theoretical coverage: 1.83 m²/L at 400 microns DFT (73 sq.ft/US gallon at 16 mils DFT), based on stated volume solids.
• Practical coverage: Allow appropriate loss factors depending on application conditions and geometry.
• Application methods: Airless spray (recommended), brush (small areas only).
• Airless spray parameters: Tip range 0.39–0.54 mm (15–21 thou); minimum fluid pressure at tip 175 kg/cm² (2489 psi).
• Thinner: Not recommended.
• Cleaner: Clean water.
• Drying times at 500 microns DFT (typical):
  • 10°C (50°F): touch dry 3 h, hard dry 4 h, minimum self-overcoating 18 h, maximum self-overcoating extended.
  • 25°C (77°F): touch dry 2 h, hard dry 3 h, minimum self-overcoating 6 h, maximum self-overcoating extended.
  • 40°C (104°F): touch dry 1 h, hard dry 2.5 h, minimum self-overcoating 4 h, maximum self-overcoating extended.
  • Minimum interval before approved topcoats: 24 h.
• Density: 1.46 kg/L (12.2 lb/US gallon).
• Flash point: >100°C (>212°F), closed cup.
• VOC content:
  • 0 g/kg (EU Solvent Emissions Directive 2010/75/EU).
  • 23 g/L (EU Product Directive 2004/42/EC).
• Recommended primers (selection): Intercryl 525, Intergard 251, Intergard 251HS, Intergard 2509, Intergard 269, Intergard 276, Interprime 306, Interseal 1052. Also suitable over Interzinc 42 and Interzinc 52 when an appropriate tie coat is used.
• Recommended topcoats (selection): Intercryl 525, Intersheen 579, Interthane 870, Interthane 990, Interthane 990SG.
• Substrate temperature during application: Air and steel >10°C (50°F); surface at least 3°C (5°F) above dew point.
• Maximum relative humidity during application:
  • Up to 85% (English technical sheet).
  • Up to 80% (Spanish technical sheet).
• Service environment: Interior steelwork in non-exposed conditions. Not designed for frequent immersion or soaking in water.
• Pack size: 20 L unit.
• Typical shipping weight: 30.5 kg for 20 L pack.
• Shelf life: Minimum 12 months at 25°C (77°F); store in dry, shaded conditions away from heat and ignition sources; protect from freezing.

Applications and use cases

• Interior structural steel in commercial buildings – beams and columns in offices, retail, public buildings and other structures where exposed steel requires certified cellulosic fire protection.
• Industrial and infrastructure projects – internal steel frames in industrial facilities, logistics centres and similar projects where on-site intumescent application is required.
• Hollow structural sections – protection of appropriate hollow sections in interior environments, including configurations filled with concrete in line with tested designs.
• Refurbishment and upgrades – upgrading fire resistance of existing primed interior steelwork where access for factory application is not possible.
• Decorative exposed steel – where a white matt intumescent finish is acceptable, or where a compatible topcoat will be applied for colour and aesthetics in visible areas.

INTERCHAR 1260 is intended for internal steelwork in non-exposed environments and is not designed for frequent water immersion or soaking. INTERCHAR 1260 (sealed or unsealed) should be protected from pooling or running water.

FAQ – INTERCHAR 1260

1. What level of fire protection does INTERCHAR 1260 provide?

   It provides up to 60 minutes cellulosic fire protection on a wide range of I-section beams, columns and hollow sections in interior environments. It can provide up to 90 minutes fire protection to BS476 Parts 20-21 and up to 120 minutes fire protection to EN 13381-6:2012 for concrete filled hollow sections, depending on design and section size.

2. Where can this intumescent coating be used?

   It is intended for on-site application to interior exposed structural steel in non-exposed conditions. It is not designed for frequent water immersion or soaking and should be protected from pooling or running water.

3. How should the steel be prepared before application?

   All steel surfaces must be clean, dry and free from contamination, prepared in accordance with ISO 8504:2000. INTERCHAR 1260 should be applied over a recommended anti-corrosive primer within the specified overcoating interval. Areas of breakdown or damage should be prepared to the specified standard (such as Sa2½ / SSPC-SP6 or SSPC-SP11) and re-primed before applying INTERCHAR 1260.

4. Which application methods are recommended?

   Airless spray is recommended for achieving the required high film builds in a single coat. Brushing is suitable for small areas and detailing only. Conventional air spray is not recommended.

5. What are the typical drying and overcoating times?

   At 500 microns DFT, typical touch dry times are 3 h at 10°C, 2 h at 25°C and 1 h at 40°C. Minimum self-overcoating intervals are 18 h at 10°C, 6 h at 25°C and 4 h at 40°C. Approved topcoats should not be applied until at least 24 h after application.

6. Can INTERCHAR 1260 be left un-topcoated?

   In interior environments classified as ISO 12944-2 C1, topcoats are not necessary and may be specified purely for decorative reasons. In visible areas, spray application is preferred to achieve a more uniform appearance.

7. What primers and topcoats are compatible?

   Recommended primers include Intercryl 525, Intergard 251, Intergard 251HS, Intergard 2509, Intergard 269, Intergard 276, Interprime 306 and Interseal 1052. INTERCHAR 1260 may also be applied over Interzinc 42 and 52 when a suitable tie coat is used. Recommended topcoats include Intercryl 525, Intersheen 579, Interthane 870, Interthane 990 and Interthane 990SG.

8. How should the product be stored?

   Store in tightly closed original containers in a dry, cool, well-ventilated and shaded area, away from heat and ignition sources. Protect from freezing at all times during storage and transport. Under these conditions, shelf life is at least 12 months at 25°C (77°F), subject to re-inspection thereafter.

9. What is the VOC content?

   The VOC content is 0 g/kg under the EU Solvent Emissions Directive (2010/75/EU) and 23 g/L under the EU Product Directive (2004/42/EC).

10. Is INTERCHAR 1260 suitable for exterior exposure or immersion?

    No. It is intended for interior steelwork in non-exposed conditions and is not designed for frequent water immersion, soaking, or exterior weathering. The coating (sealed or unsealed) should be protected from pooling or running water.

Section 14 – Transport information

According to the safety data sheet, INTERCHAR 1260 White is not classified as dangerous for transport under ADR/RID, IMDG or IATA regulations.

• UN number / ID number: Not regulated.
• UN proper shipping name: Not regulated.
• Transport hazard class(es): Not regulated.
• Packing group: Not regulated.
• Environmental hazards: Not classified as environmentally hazardous for transport.
• Transport within user’s premises: Always transport in closed containers that are upright and secure. Ensure that persons transporting the product know what to do in the event of an accident or spillage.
• Transport in bulk according to IMO instruments: Not applicable.

Section 8 – Personal protective measures

INTERCHAR 1260 White is classified as harmful if swallowed, causes serious eye irritation, is suspected of causing cancer and is suspected of damaging fertility. It may also cause an allergic reaction due to the presence of 1,2-benzisothiazol-3(2H)-one and CMIT/MIT(3:1). Appropriate personal protection and safe-handling practices are essential.

Exposure controls and hygiene

• Use engineering controls such as process enclosures and local exhaust ventilation where operations generate vapours, mists or sprays, to keep exposure below applicable limits.
• Wash hands, forearms and face thoroughly after handling and before eating, drinking, smoking or using the lavatory.
• Remove contaminated clothing and protective equipment before entering eating areas; wash contaminated clothing before reuse.
• Do not eat, drink or smoke when using this product.

Eye and face protection

• Wear chemical splash goggles complying with an approved standard whenever there is a risk of splashes, mists, gases or dusts.
• If contact occurs, rinse immediately with plenty of water for at least 10 minutes and obtain medical attention if irritation persists.

Hand protection

• Wear chemical-resistant, impervious gloves complying with EN374 or equivalent whenever handling the product.
• For prolonged or frequently repeated contact, gloves with protection class 6 (breakthrough time >480 min) are recommended. Suggested materials: Viton or nitrile, thickness ≥0.38 mm.
• For brief contact, gloves with protection class 2 or higher (breakthrough time >30 min) are recommended. Suggested material: nitrile, thickness ≥0.12 mm.
• Replace gloves regularly and if any signs of damage or degradation are observed.

Skin and body protection

• Wear suitable protective clothing selected according to the task and risk assessment, such as chemical-resistant coveralls.
• Use appropriate footwear and additional skin protection as needed, approved by a safety specialist.

Respiratory protection

• If adequate ventilation is not available, or if risk assessment indicates, use respiratory protection meeting the appropriate standards or certifications.
• Dry sanding, flame cutting or welding of the dry film can produce hazardous dust and fumes. Wet sanding/flatting should be used where possible; if exposure cannot be avoided, use suitable respiratory protective equipment and local exhaust ventilation.
• Respirators must be used as part of a formal respiratory protection programme ensuring correct selection, fitting and training.

Additional safety notes

• For professional use only.
• Obtain special instructions before use and avoid exposure during pregnancy.
• Do not breathe spray or mist; hazardous respirable droplets may be formed when sprayed.
• Dispose of contents and containers in accordance with local, regional and national regulations. The product waste may meet the criteria for hazardous waste.

*Contenido generado por IA