CARC (Chemical Agent Resistant Coating) and military-grade painting is a specialised niche within defence spray booths — combining heavy-vehicle handling, isocyanate safety controls and DAP 2020 vendor compliance. This guide covers the coating specification, booth design requirements and safety protocols Indian ordnance manufacturers and defence PSU suppliers need to know, based on Autocoat's experience serving HAL, Ordnance Factory Board and Bharat Dynamics Ltd.
📋 What You'll Learn
1. What is CARC Coating?
CARC (Chemical Agent Resistant Coating) is a 2-component aliphatic polyurethane system developed for military platforms exposed to chemical warfare threats. Two critical properties define it:
- Chemical resistance — the cured film doesn't absorb chemical agents, allowing decontamination without permanently contaminating the vehicle's coating
- Low IR/visual signature — matte finish (typically 5 – 10 GU gloss) reduces both visible reflectivity and infrared signature for tactical concealment
Typical CARC System
Primer: Epoxy primer for corrosion resistance and adhesion.
Topcoat: Aliphatic polyurethane, matte finish, camouflage colour per platform specification.
Total DFT: 75 – 125 microns depending on service environment.
CARC is used on tanks, armoured personnel carriers, artillery, military trucks, engineering support vehicles and naval deck equipment across militaries worldwide — including Indian Army, DRDO and Ordnance Factory Board platforms.
2. Military Paint Booth Design Requirements
Standard automotive booths cannot handle military vehicle painting. Key design differences:
| Requirement | Specification |
|---|---|
| Booth length | 15 – 25 m to fit tanks and heavy armour |
| Floor loading | Rated 40 – 60 tonne for tank/heavy armour weight |
| Electrical rating | Explosion-proof (Class I Division 1 equivalent) — CARC solvent flash point as low as 25 – 30°C |
| Ventilation | Enhanced VOC/isocyanate extraction beyond standard automotive rates |
| Respiratory protection | Supplied-air respirator system integrated with booth |
| Masking capability | Camouflage pattern masking stations for multi-colour tactical schemes |
| Access | Heavy-duty overhead crane or ramp for tank/APC loading |
3. CARC Spraying Safety Protocols
⚠️ Isocyanate Exposure Risk
CARC's isocyanate content causes respiratory and dermal sensitisation with repeated exposure — this is the single most important safety consideration in military paint booth design.
- Supplied-air respirators mandatory for spray operators — cartridge respirators are insufficient for isocyanate exposure
- Explosion-proof electrical rating throughout the booth given low flash-point solvents
- Enhanced exhaust ventilation to keep isocyanate vapour concentration below DGFASLI/OSHA permissible exposure limits
- Full-coverage skin protection — CARC can cause dermal sensitisation on contact
- Emergency eyewash and shower stations at booth entry points
- Medical surveillance program for isocyanate-exposed workers per factory safety regulations
4. DAP 2020 Vendor Compliance
DAP 2020 (Defence Acquisition Procedure 2020) governs how the Ministry of Defence, Ordnance Factory Board, DRDO and defence PSUs procure equipment — including paint booths. Vendors must demonstrate:
- Quality certifications — ISO 9001 minimum, AS9100 for aerospace-adjacent scope
- Indigenous content — compliance with Make in India / Atmanirbhar Bharat provisions
- Security clearance — for personnel working on defence premises
- Material traceability — documented process and material records for audit
Autocoat has supplied paint booths meeting Ordnance Factory Board and Bharat Dynamics Ltd vendor-quality standards, with documentation support for DAP 2020 compliance.
5. Cost Breakdown for Defence Paint Booths 2026
| Configuration | Price Range (INR) |
|---|---|
| Medium defence vehicle booth (trucks, APCs, 10 – 15 m) | ₹60 lakh – 1.5 crore |
| Heavy armour booth (tanks, 15 – 25 m, reinforced floor) | ₹1.5 – 3.5 crore |
| Full defence paint shop (pretreatment + CARC spray/cure) | ₹4 – 10 crore |
| Ordnance Factory scale multi-bay facility | ₹15 – 40 crore |
Pricing reflects heavy-duty construction, explosion-proof electricals, enhanced isocyanate extraction and DAP 2020 vendor documentation requirements.
6. Which Vehicles Require CARC?
- Main battle tanks (T-90, Arjun)
- Infantry combat vehicles (BMP-2)
- Armoured personnel carriers
- Artillery guns and self-propelled howitzers
- Military trucks and logistics vehicles
- Engineering support vehicles (bridge-layers, recovery vehicles)
- Missile transporter-erector-launchers
- Naval deck equipment requiring decontamination capability
Non-combat defence support equipment typically uses conventional epoxy-polyurethane systems rather than full CARC specification — CARC is reserved for platforms with realistic chemical/biological threat exposure.
7. Autocoat's Defence Sector Experience
Autocoat Engineering has designed paint booths meeting HAL, Ordnance Factory Board and Bharat Dynamics Ltd (BDL) vendor-quality standards for coating military hardware including tanks, artillery, small arms and ammunition components. Our defence-sector booths feature:
- Heavy-duty floor construction rated for armoured vehicle weight
- Explosion-proof electricals
- Enhanced VOC/isocyanate extraction systems
- HEPA filtration where specified
Need a CARC-Capable Defence Paint Booth?
Autocoat has supplied paint booths meeting Ordnance Factory Board and BDL standards. Contact us for defence sector specifications and DAP 2020 documentation support.
Get Free Quote →Frequently Asked Questions
What is CARC coating?
Chemical Agent Resistant Coating — a 2-component polyurethane for military vehicles resisting chemical warfare agents and enabling decontamination. Matte finish reduces visual/IR signature. Used on tanks, APCs, artillery.
What paint booth specifications are needed for military vehicle painting?
15 – 25 m booth length, 40 – 60 tonne floor rating, explosion-proof electricals, enhanced isocyanate extraction, supplied-air respirators, camouflage masking stations, heavy-duty vehicle access.
How much does a military/defence paint booth cost in India 2026?
Medium vehicle booth ₹60 lakh – 1.5 crore; heavy armour booth ₹1.5 – 3.5 crore; full paint shop ₹4 – 10 crore; Ordnance Factory scale ₹15 – 40 crore.
What is DAP 2020 and how does it affect vendors?
Defence Acquisition Procedure 2020 governs MoD/OFB/DRDO procurement. Vendors need ISO 9001, indigenous content compliance, security clearance and material traceability documentation.
What safety precautions are required for CARC spraying?
Supplied-air respirators, explosion-proof electricals, enhanced exhaust ventilation, full-coverage skin protection, eyewash/shower stations, medical surveillance program.
What vehicles require CARC coating?
Tanks, APCs, artillery, military trucks, engineering support vehicles, missile TELs, naval deck equipment. Non-combat support equipment typically uses conventional epoxy-PU.
Can Autocoat supply CARC-capable paint booths?
Yes — Autocoat meets Ordnance Factory Board and BDL vendor-quality standards, with heavy-duty floors, explosion-proof electricals and enhanced isocyanate extraction. Contact +91-9322508192.
About the Author
Umesh Prabhu — Founder & Managing Director, Autocoat Engineering India Pvt Ltd
Umesh Prabhu is a mechanical engineer, industrial consultant, and founder of Autocoat Engineering India Private Limited. With over 40 years of experience in industrial painting and surface finishing, he specializes in industrial paint shops, powder coating systems, automated painting solutions, paint booths, and energy-efficient plant design. His industry experience includes working with leading automotive and manufacturing companies such as Tata Motors and Bajaj Auto.
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