Industrial Coatings for Street Lighting Columns | New Guard Coatings
Street lighting columns are exposed to the elements throughout their service life. Rain, moisture, UV radiation, atmospheric pollution, temperature changes and, in coastal areas, salt exposure can all contribute to coating deterioration and corrosion.
A suitable industrial coating system can help protect steel lighting columns, restore deteriorated surfaces and provide a durable decorative finish.
New Guard Coatings supplies protective coating solutions for street lighting columns and other outdoor steel structures across the UK.
Protective Coatings for Street Lighting Columns
Street lighting columns are typically manufactured from steel or other metal substrates and require appropriate protection against environmental exposure.
Industrial coatings can be used for:
- Steel street lighting columns
- Lamp posts
- Lighting poles
- Column bases
- Lighting supports
- Fabricated steel lighting structures
- Associated metal components
Whether coating newly fabricated columns or refurbishing existing infrastructure, the coating system should be selected according to the substrate, environmental conditions and required durability.
Why Coat Street Lighting Columns?
Outdoor lighting columns are continually exposed to weathering.
Over time, an existing protective coating can fade, deteriorate, peel or become damaged, potentially leaving the underlying metal vulnerable to corrosion.
A suitable anti-corrosion coating can help:
- Protect steel from moisture
- Reduce corrosion
- Improve weather resistance
- Restore the appearance of ageing columns
- Provide a durable finish
- Extend maintenance cycles
For infrastructure operators and contractors, protective coating can form part of an ongoing maintenance and refurbishment programme.
Corrosion Protection for Lighting Columns
Corrosion is a key consideration when maintaining steel lighting columns.
Areas around the base of a column, joints, fixings and damaged sections can be particularly important to inspect.
Before selecting a coating system, assess:
- Existing corrosion
- Condition of the current coating
- Environmental exposure
- Substrate type
- Surface preparation requirements
- Required durability
For heavily corroded columns, simply applying a new coat over the existing surface is unlikely to provide the required result. The substrate should be appropriately prepared before the new system is applied.
Protecting Column Bases
The lower section of a lighting column can experience additional exposure to moisture, dirt, road contaminants and mechanical damage.
Column bases should therefore be carefully inspected during maintenance work.
Any corrosion, loose coating or contamination should be addressed as part of the surface preparation process before applying the specified coating system.
Coatings for Galvanised Lighting Columns
Galvanised steel is widely used for outdoor infrastructure because the zinc coating provides corrosion protection.
However, painting or recoating galvanised steel requires consideration of the existing surface and the compatibility of the proposed coating system.
Before coating galvanised lighting columns, assess:
- Condition of the galvanised surface
- Existing contamination
- Previous coatings
- Adhesion requirements
- Suitable primer
- Compatible topcoat
Not every industrial coating is suitable for direct application to galvanised steel.
The manufacturer's technical documentation should always be checked to confirm suitability.
Recoating Existing Street Lighting Columns
Many lighting column projects involve refurbishment of existing infrastructure rather than coating new steel.
The existing coating should be assessed before work begins.
Check for:
- Peeling
- Flaking
- Blistering
- Cracking
- Rust
- Exposed steel
- Poor adhesion
- Dirt and contamination
- Previous repairs
Where the existing coating is sound and compatible, appropriate preparation may allow the new coating system to be applied over it.
Where the existing coating is failing or unsuitable, additional preparation or removal may be required.
A test area can be useful where the compatibility of an existing coating is uncertain.
Surface Preparation for Street Lighting Columns
Correct preparation is one of the most important stages of a lighting column coating project.
The surface should be free from contaminants that could interfere with coating adhesion.
Potential contaminants include:
- Dirt
- Dust
- Oil
- Grease
- Road grime
- Salt
- Rust
- Loose paint
- Moisture
Depending on the condition of the column and specified coating system, preparation may include:
- Cleaning
- Degreasing
- Mechanical preparation
- Power-tool cleaning
- Abrasive blasting
The required preparation method should be determined according to the substrate and coating specification.
Our surface preparation guide provides further information on preparing industrial metal surfaces before coating.
Primers for Street Lighting Columns
A suitable industrial primer can provide the foundation for a protective coating system.
Primer selection should take into account:
- Steel or galvanised substrate
- Existing coating
- Surface preparation
- Corrosivity
- Environmental exposure
- Intended topcoat
- Required durability
The primer and topcoat should be compatible and specified as part of the same coating system.
For steel columns exposed to demanding outdoor conditions, the primer can play an important role in the overall corrosion protection strategy.
Weather Resistant Lighting Column Coatings
Street lighting columns are exposed to changing weather conditions throughout the year.
A suitable external coating system may need to withstand:
- Rain
- Moisture
- UV radiation
- Temperature changes
- Atmospheric pollution
- Wind
- General weathering
For coastal locations, salt spray and increased humidity may also need to be considered.
The required performance will depend on the location and intended service environment.
Decorative Coatings for Street Lighting Columns
Lighting columns are highly visible pieces of public infrastructure, meaning appearance can be just as important as protection.
A new coating can help refresh the appearance of ageing infrastructure while providing an additional protective layer.
Depending on the coating system, considerations may include:
- Colour
- Gloss level
- Finish
- Colour retention
- UV resistance
- Compatibility with existing infrastructure
Colour matching can also be important when refurbishing existing street furniture or infrastructure.
ISO 12944 & Lighting Columns
ISO 12944 provides a framework for selecting protective paint systems for steel structures based on environmental corrosivity and required durability.
This can be relevant when specifying protective coatings for external steel lighting columns.
The location should be assessed to establish the environmental conditions affecting the structure.
Consider whether the column is located in:
- An urban environment
- An industrial area
- A coastal location
- A marine environment
- A sheltered environment
- An area exposed to salt spray
Where a project specification requires a particular ISO 12944 coating system, the proposed products should be checked against the manufacturer's technical documentation.
Coating Systems for Street Lighting Columns
A lighting column may require a multi-layer coating system.
A typical system could consist of:
Surface Preparation → Primer → Intermediate Coat → Topcoat
The exact system will depend on:
- Substrate
- Existing coating
- Environmental exposure
- Corrosion level
- Required durability
- Preparation standard
- Project specification
All layers should be compatible and applied according to the relevant technical data.
Application of Lighting Column Coatings
The selected coating should be applied in accordance with the manufacturer's recommendations.
Before application, check:
- Surface preparation requirements
- Mixing instructions
- Application method
- Film thickness
- Temperature
- Humidity
- Surface temperature
- Recoat time
- Drying time
- Curing requirements
Depending on the product, application may be possible using brush, roller or spray.
For larger numbers of columns, spray application may offer efficiency advantages where appropriate equipment and site conditions allow.
Drying & Curing
Environmental conditions can have a significant impact on drying and curing.
Before coating, consider:
- Air temperature
- Surface temperature
- Humidity
- Condensation
- Weather conditions
- Ventilation
Columns should not be exposed to rain or unsuitable conditions during application and early curing where the product specification prohibits it.
Always follow the manufacturer's stated drying, recoating and curing requirements.
Maintenance of Coated Lighting Columns
Regular inspection can help identify coating deterioration before significant corrosion develops.
Inspect columns for:
- Rust
- Peeling
- Flaking
- Blistering
- Cracking
- Mechanical damage
- Exposed steel
- Fading
- General deterioration
Particular attention should be paid to column bases, fixings, joints and areas where the coating has been mechanically damaged.
Where damage is identified, the underlying cause should be established before carrying out repairs.
Common Street Lighting Coating Problems
Rust appearing through the coating
This can indicate corrosion beneath the existing coating or inadequate preparation before recoating.
Peeling paint
Poor adhesion can be associated with contamination, inadequate preparation or coating incompatibility.
Blistering
Moisture and unsuitable application conditions can contribute to blistering.
Fading
UV exposure can affect the colour and appearance of some coating systems.
Mechanical damage
Maintenance work, impact and general environmental exposure can damage the coating and expose the substrate.
Choosing the Right Lighting Column Coating
There is no single coating suitable for every street lighting column.
Before specifying a system, consider:
What is the column made from?
Steel, galvanised steel and previously coated substrates can have different preparation and coating requirements.
What condition is the existing surface in?
Determine whether the existing coating is sound, deteriorated or heavily corroded.
Where is the column located?
Urban, industrial and coastal environments can have different corrosion risks.
What preparation is required?
The existing condition will determine the appropriate preparation method.
What finish is required?
Consider colour, gloss and compatibility with surrounding infrastructure.
How long should the coating last?
Required durability and maintenance cycles should influence system selection.
How will it be applied?
Consider brush, roller or spray application and the conditions available on site.
Street Lighting Column Coatings for Contractors
For contractors responsible for refurbishing or maintaining street lighting infrastructure, coating selection needs to balance protection, appearance, application and project requirements.
A successful project should consider the complete process:
Inspect → Prepare → Prime → Coat → Cure → Maintain
Using the correct industrial coating system and following the manufacturer's technical recommendations at every stage can help achieve a more durable result.
Frequently Asked Questions
What is the best paint for street lighting columns?
The appropriate coating depends on the column substrate, existing coating, environmental exposure, corrosion level and required durability.
Can you repaint street lighting columns?
Yes, suitable lighting columns can be refurbished and recoated where the substrate and existing coating are appropriate and correctly prepared.
Can you paint galvanised lighting columns?
Galvanised steel can be coated using suitable systems, but preparation and product compatibility are important. The manufacturer's technical documentation should confirm suitability.
How do you prepare a street light column for painting?
Preparation may involve cleaning, degreasing, removal of corrosion and mechanical or abrasive preparation, depending on the substrate and coating system.
Do street lighting columns need a primer?
A primer may form part of a protective coating system, particularly where corrosion protection is required. The correct primer depends on the substrate and specified system.
What prevents street lighting columns from rusting?
A suitable protective coating system can help protect steel from moisture and environmental exposure. Correct preparation and coating selection are essential.
Can you paint over existing paint on a lighting column?
Potentially, provided the existing coating is sound, suitably prepared and compatible with the new system. Loose or failing paint should be addressed first.
Are industrial coatings suitable for outdoor lighting columns?
Suitable industrial coatings can be used for compatible outdoor applications where the coating is designed for the expected environmental exposure.
How long does a lighting column coating last?
There is no universal service life. Longevity depends on the coating system, substrate, environmental exposure, preparation, application and maintenance.
Protect & Restore Street Lighting Columns
Street lighting columns are a long-term part of the UK's infrastructure and require protection from the conditions they face throughout their service life.
Whether you are coating newly fabricated columns or refurbishing existing infrastructure, the right anti-corrosion coating, appropriate surface preparation and compatible primer and topcoat can help provide durable protection.
New Guard Coatings supplies industrial coating solutions for street lighting columns, outdoor steel structures and wider infrastructure applications across the UK.