Carboline Thermo-Lag 3000-P is a two-component, 100% solids epoxy based intumescent coating for the fire protection of structural steel.

Petrochemical grade, 100% solids epoxy based intumescent designed to fireproof steelwork for up to a 4-hour fire rating, depending on the design. The recommended use for this product is fireproofing of steel beams, columns, tubes, pipes, vessel skirts, bulkheads, underdecks, and electrical raceways.

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• Features and Benefits
• Product Specification
• Drying Times
• Surface Preparation
• Application Methods
• Application Conditions
• Health and Safety

Features and Benefits

• UL listed - designs for many types of steel sections up to 4-hour fire ratings for both interior and
  exterior environments
• Durable finish - provides a hard, durable finish resistant to normal wear
• Thin film coating - offers an economical solution to alternative fireproofing
• VOC compliant
• Easy repair - if damaged it can be repaired easily using material as putt
• Textured finish
• Colour: Part A: Light Grey. Part B: Black. Mixed: Grey

Product Specification

• All values derived under controlled laboratory conditions unless otherwise noted

Drying Times

• Above cure times are based on 50% relative humidity
• Curing times are dependent upon temperature, air movement and humidity
• For optimum curing, it is recommended to apply coats at 80-200 mils (2-5 mm) wet per coat
• Material can be heated to achieve a quicker recoating and curing schedule
• If maximum recoat or topcoat times are exceeded, the surface must be mechanically abraded, and solvent wiped prior to applying additional coats
• Consult Rawlins on Tech - 0113 2455450 (option 2) or [email protected] for specific details

Surface Preparation

Application Methods

General

• Pre-cut all mesh before beginning application. Contact Rawlins on Tech - 0113 2455450 (option 2) or [email protected] for design details. All mesh must be kept clean and dry.
• Plural Component Application: Prior to introduction into the plural component equipment, the product must be preheated to 21-38°C. Perform at least two ratio checks per day and also after any equipment maintenance. Apply first coat at 80-200 mils (2-5 mm). Lighter coats will achieve a smoother finish. Allow material to gel for 15 minutes before installing mesh and back rolling. Apply pre-cut mesh into wet coating using solvent resistant mohair rollers. Use Carboline Plasite Thinner 19, Thinner 242 E or approved equal as rolling solvent to mist down rollers to prevent them from sticking to the material. Allow material to cure for approximately 30 minutes (depending upon temperature) between coats. Continue building material at 80-200 mils (2-5 mm) per coat to specified thickness.
• Trowel Application: Recommended for small areas only. Prior to trowel application, the material must be preheated to a minimum of 21°C to achieve a workable consistency. Once material is mixed, it must be poured out of mass onto a clean table or flat working surface to extend the pot life. The material can then be divided into workable amounts. Trowel apply first coat at 80-200 mils (2-5 mm). Allow material to gel for 15 minutes before installing mesh and back rolling. Apply pre-cut mesh into wet coating using solvent resistant mohair rollers. Use Carboline Plasite Thinner 19, Thinner 242 E or approved equal as rolling solvent to mist down rollers to prevent them from sticking to the material. Allow material to set up sufficiently to support the next trowel applied coat. This will range between 1-4 hours between coats. Continue building material at 80-200 mils (2-5 mm) per coat to specified thickness.
• Always use clean solvent for back rolling. Avoid using excessive solvent when back rolling as this can lead to solvent entrapment and lengthen the cure time of the material. Use solvent moistened rollers to back roll material after each subsequent coat to improve finish and level surface if required. Lighter coats will achieve a smoother finish. Contact Rawlins or refer to the product application manual for more detailed information.

Application Rates

• At an ambient temperature of 21°C, the following application rates are applicable:
• 80-200 mils (2-5 mm) per coat (wet)
• 30 minutes recoat time between coats
• Multiple coats per day

Wet Film Thickness

• Frequent thickness measurements with a wet film gauge are recommended during the application process to ensure uniform thickness

Dry Film Thickness

• Final thickness must be measured using an electronic dry film thickness gauge
• For method of thickness determination and tolerances refer to: AWCI Technical Manual 12-B (Standard Practice for the Testing and Inspection of Field Applied Thin Film Intumescent Fire Resistive Materials)

Maintenance

• If coating becomes damaged, rebuild required thickness by spray or trowel
• When dry, smooth and finish with approved topcoat to match
• Damaged areas must be abraded back to a firm edge by sanding or scraping
• The topcoat should be abraded back by 1" (25.4 mm) from the damaged area
• The surface must be clean and dry before re-applying Thermo-Lag 3000-P
• The coating shall then be built back to the original thickness
• If the mesh is damaged, it must be cut out and replaced as well
• Allow to cure and then overcoat with the specified topcoat or system

Application Conditions

• Air and substrate temperature must be at least 5°C and rising
• Steel surface temperature should be a minimum of 3°C above the dew point
• The maximum humidity is 85%. Area must be protected from rain or running water during application until material is cured and topcoated

Health and Safety

Clean Up

• Flush static mixer, whip hose, gun and tips with hot water or Carboline approved thinner immediately after each use (depending on pump set up)
• Use Carboline Plasite Thinner 19, Thinner 242 E or approved equal for cleaning solvent
• Break down static mixer, gun and tip assembly and hand clean

Safety

• Read and follow all caution statements in the product data sheet and on the SDS for this product
• Employ normal workmanlike safety precautions
• Use adequate ventilation
• Keep container closed when not in use

Overspray

• All adjacent and finished surfaces shall be protected from damage and overspray

Ventilation

• When used in enclosed areas, thorough air circulation must be used during and after application until the coating is cured.
• The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used
• User should test and monitor exposure levels to ensure all personnel are below guidelines
• If not sure or if not able to monitor levels, use MSHA/NIOSH approved respirator

Caution

• Thermo-Lag® 270, like most water-based coatings, is electrically conductive until it is dry
• Extreme caution should be exercised when the material is applied to energized cables and equipment
• The material should never be applied without the supervision of plant safety personnel

• Refer to the product data sheet and safety data sheet in the attachments section above for further details.