ISO-Certified Subcontract Conformal Coating Services
Flexible Outsourcing Backed by Expertise
SCH Services Ltd provides fast, reliable conformal coating services, specialising in liquid and nano coatings for PCB assemblies. From prototypes to high-volume production, our ISO 9001 and ISO 14001 certified processes deliver repeatable quality, full traceability, and industry-leading process control.
- Lowest like-for-like price guarantee
- Global reach with local expertise
- ISO 9001 & ISO 14001 certified facilities
- 25+ years of coating expertise
📞 ✉ 💬 Contact Us Now and request a quote.
End-to-End PCB Conformal Coating—Done for You
We protect PCB assemblies from moisture, dust, chemicals, and thermal cycling, while also keeping your production schedule on track.
To achieve this consistently, we offer a turnkey subcontract coating service that manages every stage of the process — from initial intake and documentation, through cleaning, masking, application and cure, right through to final inspection, pack-out, and shipping. By taking full ownership of the process, our customers gain a fully controlled, traceable, and repeatable coating workflow that delivers reliability without disrupting their manufacturing timelines.
Our service includes:
- Any volume capability: from prototypes and NPI batches through to large-scale production
- Process specification development and comprehensive risk analysis
- Clearly defined acceptance criteria, written directly into documentation
- Full batch traceability maintained for every job
- Consistent turnaround times you can depend on, ensuring reliable delivery
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Our Capability: Application, Cleaning & Curing
Every step of our liquid conformal coating services is engineered for precision, repeatability, and compliance. We adapt our processes to meet your exact requirements.
Application Methods
- Dip coating – uniform 360° coverage with controlled dwell/withdrawal
- Batch spray – flexible and ideal for prototypes or mixed lots
- Masking (boots, tapes, 3D parts), de-masking, touch-up, depanel, and packaging
Cleaning & Surface Preparation
- Aqueous or solvent cleaning matched to coating chemistry
- Ionic contamination testing (ROSE/IC) for cleanliness assurance
- Surface energy checks to confirm adhesion readiness
- Primer treatments where required to improve reliability
Curing & Thermal Control
- UV curing and ambient cure workflows
- Batch ovens with logged cure profiles
- Stable environments controlling viscosity, temperature, and humidity
Coating Removal
- Conformal coating removal using wet stripping processes
- Parylene removal using Problast 3 ESD microabrasion system
Coating Materials We Apply
We apply a wide range of liquid conformal coatings and nano coatings to meet performance, cost, and compliance requirements. Our team can advise on the most suitable chemistry for your design.
- Acrylic (AR): cost-effective, fast cure, easy rework
- Polyurethane (UR): excellent toughness and chemical resistance
- Silicone (SR): flexible across extreme temperatures
- UV-cure systems: ultra-fast processing with secondary cure as needed
- Low-VOC and solvent-based options: aligned with regulatory requirements
- Nano coatings: ultra-thin hydrophobic/oleophobic barriers
Not sure which coating fits? Our team will assess your environment, reliability targets, and budget before recommending the best option.
Quality Control & Standards
We align every project to IPC-A-610 Class 3 and IPC-CC-830 standards, backed by ISO-certified processes.
Inspection & Test
- Film thickness verification (wet/dry) for accuracy
- Adhesion testing (cross-hatch/tape)
- 100% UV/white-light inspection
- Audit-ready records supplied on request
Compliance
- Certified to ISO 9001 and ISO 14001
- Full ESD compliance maintained
- Risk assessments with traceable documentation
Process Control
- Controlled viscosity, temperature, and humidity
- Recipe monitoring with logged cure profiles
- End-to-end operator and material traceability
Our stable processes deliver high yields, low rework, and fast turnaround—keeping your manufacturing on schedule.
📚 FAQs on Conformal Coating Services
Do you apply nano coatings as well as liquids?
Yes — we apply both. In fact, nano coatings are particularly good for ultra-thin protection on miniaturised PCBs. By comparison, traditional liquid coatings may be too thick or add unwanted weight in these applications.
Can you help with coating material selection?
Absolutely. To begin with, we work closely with customers to balance cost, rework requirements, and environmental performance. As a result, you receive a coating that meets both technical specifications and commercial objectives.
What cleanliness level is required?
We typically target very low ionic contamination levels. Before coating, our team verifies adhesion readiness through surface energy testing and wettability checks. This way, consistent and repeatable coating performance is assured.
Learn more about surface preparation & cleanliness for reliable conformal coating in our Knowledge Hub.
How are keep-out areas handled?
Keep-out areas are protected using validated masking strategies — including boots, tapes, and custom fixtures. Furthermore, each masking setup is approved before production release to ensure correct sealing and coverage control.
Why Choose SCH Services?
Partnering with SCH Services means you gain a complete, integrated platform for Conformal Coating, Parylene & ProShieldESD Solutions, alongside equipment, materials, and training, all backed by decades of hands-on expertise.
- ✈️ 25+ Years of Expertise – Trusted across aerospace, medical, defence, automotive, and electronics.
- 🛠️ End-to-End Support – Guidance on coating selection, masking, application, and ProShieldESD integration.
- 📈 Scalable Solutions – From prototypes to high-volume production.
- 🌍 Global Reach – Support and supply across Europe, North America, and Asia.
- ✅ Proven Reliability – Reputation built on quality, consistency, and customer satisfaction.
📞 Call: +44 (0)1226 249019
✉ Email: sales@schservices.com
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