- Why Do Combustible Surfaces Need Protection?
- What is a Combustible Surface?
- How Can Combustible Surfaces Be Protected?
- Manufacturer Instructions Always Take Priority
- Common Situations Where Protection May Be Required
- Common Issues Found During Gas Safety Inspections
- What We Check During a Gas Safety Inspection
- Choosing the Correct Protective Material
- Frequently Asked Questions
- Need a Gas Safety Inspection?
Why Do Combustible Surfaces Need Protection? #
Many gas appliances generate significant heat during normal operation. If nearby combustible materials such as timber, plasterboard or laminate are not adequately protected, excessive heat can increase the risk of fire or damage over time.
Where the required clearances cannot be achieved, combustible surfaces may need to be protected using approved methods that comply with Australian Standards and manufacturer requirements.
What is a Combustible Surface? #
A combustible surface is any material that can ignite or be damaged by heat.
Common examples include:
- Timber cabinetry
- Plasterboard walls
- MDF or particleboard
- Laminate benchtops
- Timber framing
- Decorative timber wall panels
- Vinyl wall coverings
Materials such as brick, concrete and masonry are generally considered non-combustible.
How Can Combustible Surfaces Be Protected? #
There are two primary ways to achieve a safe installation:
1. Maintain the Required Clearances #
The preferred solution is to install the gas appliance with the clearances specified by:
- The appliance manufacturer, or
- The applicable Australian Standards,
whichever requires the greater clearance.
2. Install an Approved Thermal Protective System #
If sufficient clearance cannot be achieved, an approved thermal protective system may be installed to reduce heat transfer to nearby combustible materials.
Depending on the installation, this may include:
- Fire-resistant or thermal protective board
- Fibre cement sheeting
- Ceramic tiles installed over an approved backing material
- Stainless steel sheet over an approved substrate
- Other proprietary systems that comply with the relevant requirements
The protective material must be suitable for the specific application and installed in accordance with the manufacturer’s instructions.
Manufacturer Instructions Always Take Priority #
Every gas appliance has unique installation requirements.
Some manufacturers specify larger clearances than those contained in the Australian Standards.
Where this occurs, the manufacturer’s installation instructions must always be followed.
Common Situations Where Protection May Be Required #
Protection may be necessary when:
- A gas cooktop is close to a timber splashback.
- Overhead cupboards are installed near a cooktop.
- A gas heater is located close to combustible wall linings.
- Cabinetry cannot meet the required clearance distances.
- A kitchen renovation reduces the available installation space.
Common Issues Found During Gas Safety Inspections #
Our licensed gas fitters regularly identify:
- Combustible surfaces located too close to gas appliances.
- Missing thermal protection.
- Incorrect wall lining materials.
- Damage caused by prolonged heat exposure.
- Installations that do not follow manufacturer instructions.
- Inadequate clearance around cooking appliances.
- Unapproved protective materials.
Where safety concerns are identified, recommendations will be included in the inspection report.
What We Check During a Gas Safety Inspection #
During an inspection of accessible gas appliances, our technicians may assess:
- Appliance location.
- Visible clearances.
- Nearby combustible materials.
- Signs of heat damage.
- General installation safety.
- Compliance with manufacturer installation requirements.
- Visible thermal protection where fitted.
Choosing the Correct Protective Material #
The appropriate protection depends on several factors, including:
- The type of appliance.
- The amount of heat generated.
- The location of nearby combustible materials.
- Manufacturer requirements.
- Australian Standard installation requirements.
Some installations require evidence that the selected thermal protective material complies with the applicable requirements of AS/NZS 5601.1 Appendix C.
Frequently Asked Questions #
Can ceramic tiles protect a combustible wall? #
Yes, in some situations. However, tiles alone are not always sufficient. They generally need to be installed over an approved backing material that complies with the applicable installation requirements.
Can stainless steel be used? #
Yes, where installed as part of an approved protective system and in accordance with the applicable standards and manufacturer requirements.
Can I simply install the appliance closer to the wall? #
No. If the required clearance cannot be maintained, an approved method of protecting the combustible surface must be used, or the installation redesigned.
Who determines whether protection is required? #
A licensed gas fitter assesses the appliance installation, applicable standards and manufacturer instructions to determine whether combustible surface protection is necessary.
Need a Gas Safety Inspection? #
Rental Safety Inspections provides professional gas safety inspections throughout Victoria.
Our licensed gas fitters inspect accessible gas appliances, assess installation clearances, identify potential heat hazards and provide comprehensive reports to help landlords and property managers maintain safe and compliant rental properties.
Contact Rental Safety Inspections today to book your gas safety inspection.
