Separate material, substrate, equipment and environmental causes to investigate coating defects through controlled trials.
Describe the defect before choosing a remedy
Craters, bubbles, dry spray and orange peel are different observations. Record close-up and overall photographs, when the defect appeared and its distribution on the component. These observations establish a starting point for investigating substrate and application causes.
Change one variable at a time
Changing thinner, gun settings and film build in the same trial obscures which intervention worked. Record the baseline, retain a control panel and change one factor at a time. Attempting to correct every defect with more thinner can create further film problems.
Locate the failure plane in adhesion loss
It matters whether separation occurs at the metal, between coats or within an old layer. Coating over loose material does not remove the cause. A competent person should select the assessment method and interpret results alongside preparation, compatibility and application records.
Technical framework: from substrate to system
An industrial coating specification must connect service exposure with the capabilities of the production line. Steel, galvanised steel, aluminium and previously coated surfaces cannot automatically share the same preparation procedure. Choosing by resin name alone is incomplete without identifying whether the component will operate outdoors, face chemical splashes or remain in a dry interior. Chemical identity, concentration, temperature and duration of contact all matter.
Define the system as primer, any required intermediate coat, finish and approved thinner. Similar product names are not evidence of intercoat compatibility. A sample prepared or applied differently from production may not represent the finished component. Technical approval should ensure that purchasing, application and inspection teams use the same product codes and document revisions.
Start this assessment with the Industrial Coatings range and refer to the coatings glossary for terminology.
Example project scenario
If craters appear only in the afternoon, do not replace all material on the assumption of a faulty batch. Build a timeline of cleaning, compressed-air conditions, component handling and environmental changes. Test variables sequentially on control panels, then run a short monitored series under the corrected conditions to check for recurrence.
Checks before making the decision
- Observation: record timing and distribution across the component.
- Control: retain a reference panel on the same substrate.
- Trial: alter one variable and compare the result.
- Correction: monitor recurrence before releasing production.
Relevant products and system components
These records support comparison and technical discussion. Listing them together does not constitute an approved application system for every condition. Follow the links for packaging, technical scope and product-specific questions.
Nanomix Two-Component Gloss Acrylic Topcoat
Two-Component Gloss Acrylic Topcoat is a Nanomix coating solution developed to combine protection, an attractive finish and professional application performance on selected surfaces.
Application scope: Metal, wood, mineral or industrial surfaces specified in the product technical description.
Nanomix Epoxy Topcoat
Nanomix Epoxy Topcoat is a two-component, epoxy resin-based gloss finish for metal, wood and mineral substrates, as described in the technical catalogue.
Application scope: Metal, concrete and other mineral substrates, and wood; machinery, general industrial and marine applications. Continuous immersion and resistance to specific chemicals require separate technical confirmation.
Nanomix Gloss Polyurethane Topcoat
Gloss Polyurethane Topcoat is a Nanomix coating solution developed to combine protection, an attractive finish and professional application performance on selected surfaces.
Application scope: Metal, wood, mineral or industrial surfaces specified in the product technical description.
Nanomix Acrylic Thinner
Acrylic Thinner is an auxiliary product developed to adjust the application viscosity of the corresponding coating system in a controlled manner and support professional application quality.
Application scope: Thinning the relevant Nanomix paint, primer or varnish systems; equipment cleaning where expressly specified as suitable.
Application, acceptance and maintenance planning
Do not restrict inspection to final appearance. Address preparation, cleanliness, application conditions, mixing records and wet and dry film checks at the appropriate stages. Instruments must suit the substrate and be checked before use; a single thickness reading cannot represent an entire component. Establish additional inspection points at edges, welds and inaccessible areas.
Touch dryness, handling strength and full chemical resistance are different release criteria. Tie dispatch, stacking and commissioning to the conditions in the current technical data sheet. Food contact, potable water, fire protection and continuous immersion require documented suitability for the exact product and system; they cannot be inferred from the coating family.
Preparing a technical enquiry and quotation request
Before contacting the technical team, prepare overall and close-up photographs. Identify substrate, any previous product, area or component count, colour and appearance requirements. State the application location, equipment and required completion date. Flag chemical contact, continuous immersion, food-related use or any other condition requiring specific documentation at the beginning of the enquiry.
Request separate identification of primers, finishes and auxiliaries alongside exact product codes. List unresolved technical values as items requiring written confirmation instead of filling them with assumptions. Keeping the approved sample, current technical data sheet and application records together allows purchasing and production to work from the same decision. Packaging information supports ordering, but product-page options do not represent live stock or a guaranteed delivery date.
Send your project details through the quotation request form or discuss unresolved questions with the Versan Boya team.
Frequently asked questions
Is orange peel caused only by thinner?
No. Product selection, viscosity, atomisation, application distance and conditions may all need investigation. Increasing dilution before identifying the cause is not a universal remedy; remain within current product instructions.
Can a defective component be recoated immediately?
First establish the cause and condition of the existing film. Preparation and timing for recoating depend on the system. An additional coat can compound the defect or lead to more extensive removal later.
Sources and technical scope
This article is based on Versan Boya product records, the site's technical descriptions and available archived Nanomix catalogue documents. An archived document does not replace a current technical data sheet. Confirm numerical application values, system compatibility and special-use approvals for the selected product before ordering. The scenario is illustrative and is not presented as a completed customer project or a performance test.
Editorial archive date: 30 April 2026. This new content was prepared and updated on 25 September 2026. Archive ordering does not imply that the article was previously published.
Explore the subject further
- Specifying a Steelwork Coating System: From Exposure to Inspection
- Choosing Machinery Paint: Production Speed, Assembly and Appearance
- Epoxy Flooring: Concrete Moisture, Loads and Return to Service
- Industrial Coating Procurement: Technical Enquiries and Total Applied Cost
Related technical publication: Metal Surface Preparation: Abrasive Blasting, Cleaning and Disciplined Film Thickness Measurement.