MSDS-DC7120

DC7120 is a single-component water-based intumescent coating specially designed to increase the fire resistance of structural steel. Upon exposure to flame or heat, it immediately foams and intumesces to form a thermal barrier layer that provides effective insulation to protect the steel sections from fire and heat.

1. Surface Preparation:
   1. Clean steel of rust, grease, and contaminants.
   2. Abrasive blast clean (SSPC-SP10 / SIS-Sa 2½).
   3. Apply over compatible anti-corrosive primer (e.g., epoxy zinc phosphate, 50–75 μm DFT).
   4. Ensure primer is fully cured and clean.
2. Site Conditions:
   1. Apply above 5°C (preferably >10°C); steel temp ≥ 3°C above dew point.
   2. Relative humidity < 80%; ensure good ventilation.
   3. Protect coating from moisture, rain, and condensation.
3. Application Procedure:
   1. Mix thoroughly; thin with water max 3% if needed.
   2. Use high-pressure airless spray (min 3000 psi, tip 0.015–0.025 in).
   3. Spray 30 cm from surface, overlapping 30–40%.
   4. Max coat thickness: 700 µm (wet).
   5. Recoat after 6–12 hours; final DFT per spec.
   6. Measure thickness with electronic gauge; avoid sagging.
   7. Allow 24h drying before topcoat; protect from moisture.
4. Topcoat (Optional):
   1. Apply only after full curing.
   2. Required in unconditioned interiors; optional for conditioned interiors.
5. Cleanup & Storage:
   1. Clean tools with water immediately.
   2. Store sealed containers indoors at 5–35°C.
   3. Shelf life: 24 months.

Certifire Listed with Warringtonfire in accordance with BS476 Part 21
Fire rating up to 2 hours
Water-borne and environmentally friendly
Smooth and architecturally pleasing finish
Very low odour
Fast drying and rapid recoating properties
Excellent durability