Australian consumers only : USA & World enquires & information visit spicoatings.com - Authorised Australian & New Zealand Distributor
Most building conversations focus on R-values, insulation thickness and HVAC capacity.
But the real fight starts at the surface.
Surface heat behaviour determines how much solar energy actually enters the structure in the first place. If you do not control the surface, you are managing the symptom, not the cause.
This is where heat load behaviour separates serious performance from marketing claims.
Surface heat behaviour is how the outer skin of a building responds to solar radiation before that energy transfers inward.
Solar energy hits a surface in three main forms:
If the surface absorbs that energy, it becomes a heat source. That heat then transfers through the substrate into the building envelope.
Cause → solar radiation hits surface
Effect → surface heats up
Result → internal temperature rises, HVAC load increases
The surface decides the outcome.
Heat load behaviour is the chain reaction that follows poor surface control.
Traditional bulk insulation only addresses step three.
It does nothing to prevent the heat load forming on the exterior skin.
Control the surface and you reduce the load before it becomes a problem.
Surface heat behaviour is not one metric. It is a combination of physical properties working together.
How much solar radiation is rejected immediately.
High reflectivity means less absorption.
Low reflectivity means the surface becomes a heat battery.
How effectively the surface releases residual heat.
High emissivity allows rapid release of thermal energy.
Low emissivity traps heat.
How quickly heat spreads through the material.
Low diffusivity slows heat penetration.
High diffusivity spreads heat rapidly across the surface and inward.
Diffusivity is often ignored in modelling, but it directly influences how stable the envelope remains under sun load.
The rate heat passes through the material.
Lower conductivity reduces inward transfer.
The amount of energy required to raise temperature.
Higher specific heat can stabilise short-term spikes, but if combined with high absorption, it simply stores more unwanted heat.
Performance means nothing if it degrades.
Chalking, UV breakdown and surface erosion reduce reflectivity over time. A coating must maintain its physical structure and ceramic integrity long term.
Bulk insulation resists conductive transfer.
Surface control manages radiative heat before it enters the system.
They are not the same.
Surface behaviour reduces the formation of heat load.
Bulk insulation slows down heat that already exists.
If you only rely on internal insulation, you are managing consequences instead of preventing them.
This distinction is critical in hot climates, steel structures, container buildings and lightweight assets where surface temperatures can exceed 70°C.
A thin film can outperform thick insulation in summer conditions when its physical properties are engineered correctly.
Super Therm® is a multi-ceramic heat-block coating developed in collaboration with NASA that works at just 0.25 mm dry film thickness. It focuses on surface radiation control, high emissivity and low thermal diffusivity to stabilise the envelope before heat penetrates the substrate.
Rather than absorbing and storing heat, the coating reduces the initial heat load.
That difference changes the thermal profile of the entire structure.
More detail on testing and performance data is available here:
https://neotechcoatings.com/super-therm-testing-and-results/
Not: What is the R-value?
But: How does the surface behave under full solar load?
If the surface absorbs and stores heat, the system is already compromised.
If the surface reflects, emits and slows diffusion, the building stays thermally neutral for longer.
That reduces peak loads, stabilises internal conditions and lowers long-term operating cost.
In commercial and industrial environments, uncontrolled surface heat accelerates:
Surface control is not cosmetic. It is structural risk management.
When the envelope remains thermally stable, asset life extends.
Reflectivity → Reject solar radiation
Emissivity → Release residual heat
Thermal Diffusivity → Slow heat penetration
Conductivity → Limit inward transfer
Specific Heat → Stabilise spikes
Durability → Maintain performance over decades
When these six align, surface heat load drops dramatically.
Surface heat behaviour is the first battlefield in energy performance.
Ignore it and you will overspend on mechanical systems for decades.
Control it and the entire building operates more efficiently.
Stop thinking in thickness.
Start thinking in physics.
Converting a Toyota Coaster bus into a motorhome is a smart project. You gain space, durability and the ability to travel anywhere. But one issue shows up fast once the…
Every summer the same pattern repeats. Temperatures climb. Air conditioners run longer. Electricity demand spikes. And households open their power bill wondering how it got so high. Most advice focuses…
Passive Cool Roofs That Cut Heat Load Before It Enters Your Building A cool surface is not a new idea. What’s new is treating the roof as a thermal management…
The U.S. Energy Authority has long promoted reflective or “cool roof” technologies as a way to reduce solar heat gain in buildings. These systems typically rely on light-coloured surfaces that…
A report titled “Impact of Roof Colour and Insulation on Thermal and Energy Performance of Residential Buildings” produced by Deakin University in collaboration with the Insulation Council of Australia and…
Super Therm® is a multi-ceramic heat-blocking insulation coating designed to reduce solar heat load on exposed surfaces. When applied to metal structures such as aluminium ship and boat roofs, it…
In the insulation world, spray foam is often promoted as the ultimate solution. It delivers high R-value per inch, excellent air sealing, and the ability to fill cavities and irregular…
“Nano ceramic technology.”“Insulative ceramic particle.”“Advanced ceramic coating.” The language sounds precise. It sounds engineered. It sounds proven. It sounds authentic. But ceramics are not a single technology. They are one…
Thermal bridging is one of the most underestimated causes of energy loss in buildings. It does not matter how thick your insulation is.If heat finds a path around it, performance…
Laboratory testing matters. ASTM data matters. Controlled conditions matter. But buildings do not operate in laboratories. They operate in Adelaide summers. Middle East heat. US desert airports. Marine environments. Transportable…
Walk outside on a 35°C day.Touch a dark metal roof. It is not 35°C. It is 60°C, 70°C, sometimes more. Ambient temperature is the air.Surface temperature is radiation plus absorption…
Most insulation conversations ignore one hard truth. The substrate matters. Metal, concrete and wood do not behave the same under solar load. If you do not understand surface science first,…
Most people still believe insulation must be thick to work. Batts. Boards. Foam. Layers of material measured in tens or hundreds of millimetres. Then along comes a coating that cures…
Most buildings don’t fail because of insulation thickness. They fail because of timing. Thermal inertia and lag time are where real performance is won or lost. If you ignore them,…
Most conversations about building comfort revolve around insulation thickness and R-values. That is only part of the story. Comfort is not just about slowing heat flow. It is about how…
If you do not understand how heat actually reaches a building, you will never control it. Most discussions around insulation jump straight to R-values and bulk thickness. That misses the…
The industry is trained to think thicker equals better. More R-value. More bulk. More layers. But thickness only addresses one part of heat transfer. It deals primarily with conductive flow…
Most insulation conversations are built on one assumption. That insulation works by absorbing heat. It does not! And that misunderstanding is costing buildings money, performance and long-term resilience nor planning…
In the late 1980s, satellites were picking up something most building codes still ignore. Cities were glowing. Roofs, roads, metal structures and concrete were absorbing solar radiation all day and…
The Problem Most People Miss Heat does not move one way. It transfers through radiation, conduction and convection. Most “cool roof” products focus on one or two levers. Usually reflectivity…
Most of the building industry still worships R-value. Higher number. Thicker insulation. Problem solved. That logic worked in the 20th century. It won’t work in a future 2050 climate. If…
Cool roofs are being pushed hard. White surfaces. High reflectance. Lower surface temperatures. Reduced urban heat. All valid. But most coverage stops at the surface and ignores fundamental heat physics…
Most buildings are designed to manage heat after it is already inside. Air conditioning systems grow larger. Energy bills climb. Equipment cycles harder. Maintenance increases. Occupants complain. Asset life shortens.…
The market is shifting. Energy is expensive. Carbon is regulated. Tenants are informed. Investors are cautious. And buildings that overheat are liabilities. A thermally unstable building bleeds money. It relies…
Most of the buildings and industrial assets operating today were never designed for 45°C heatwaves, extended UV exposure, rising energy costs, or aggressive corrosion cycles. Yet that is exactly what…
What Actually Matters When Heat and Flame Are Involved Fire performance is one of the most misunderstood parts of building materials. A product can claim to be “fire resistant,” “non-combustible,”…
Every coating system eventually faces the same test. Sun. Moisture. Movement. Contamination. Time. The real question is not whether a surface will degrade. It is how fast, how predictably, and…
Steel fails for two main reasons. Heat and corrosion. We treat them as separate problems. They are not. If you allow solar radiation to superheat a steel surface, you accelerate…
The Problem Across Australia and New Zealand, thousands of buildings are operating under ageing metal roofs. Warehouses. Schools. Modular buildings. Container offices. The default solution when performance drops is expensive…
Heat blocking coatings work. But only when they are installed correctly. Too often, performance gets judged on the product when the real issue is application. A high-performance coating applied poorly…
Thickness has dominated insulation thinking for decades. More bulk. More R-value. More material. But what if performance is not about thickness at all? A 0.25 mm dry film thickness sounds…
If film thickness is wrong, performance is wrong. It’s that simple. In high-performance coatings, especially insulation and corrosion systems, dry film thickness is not a suggestion. It is a specification…
Coatings do not fail because of chemistry.They fail because of surfaces. You can have the most advanced insulation or corrosion system in the world, but if the substrate is contaminated,…
Application method is rarely discussed in technical detail, yet it directly affects coating performance. Spray and roller are not just different tools. They influence film build, density, surface profile, curing…
Extreme heat is not a theory problem. It is a surface problem. Roofs hitting 70°C. Steel containers becoming ovens. Jet bridges, rail carriages, mining camps and defence assets absorbing solar…
If you are specifying coatings for roofs, steel structures, containers or façades, the real question is simple. Will it still perform in 10, 20 or 30 years? Accelerated weathering exists…
Everyone talks about performance on day one. Very few talk about performance after year ten. In building science, coatings and insulation systems are often assessed on initial lab values. Reflectance.…
What Actually Proves Performance? In the coatings and insulation industry, everyone claims performance. Energy savings. Heat reduction. Fire resistance. Durability. But there is a clear line between manufacturer testing and…
Thermal cameras do not guess. They measure infrared radiation and convert it into a visible temperature map. When used correctly, they expose one simple truth: That difference changes everything for…
There’s a big gap between what a product says it does and what it can actually prove. In the coatings and insulation space, that gap costs money. It costs performance.…
Most people look at one number and think they understand performance. That is the mistake. Solar reflectance reports are technical documents. If you read them properly, they tell you exactly…
In building science, the lab is controlled. The surface is not. In the lab, temperature, humidity, air movement and radiation are isolated and repeatable. On a roof in Adelaide, Dubai…
Government field trials carry weight. They are independent, structured, and often influence policy, funding and specification decisions. But they are also frequently misunderstood. If you do not read them properly,…
There is a lot of noise in the insulation coatings space. Big claims. Impressive percentages. Selective test data. If you want clarity, you need to understand what ASTM and ISO…
Why surface science must now shape planning law Urban heat is no longer a design inconvenience. It is a public health, infrastructure and energy problem. Cities are running hotter because…
We are not designing for yesterday’s climate anymore. Australia is already experiencing longer heatwaves, higher peak temperatures, intense rainfall events and elevated night-time temperatures. Buildings constructed to 1990s logic are…
Energy ratings were built for a different era. They measure compliance. They don’t measure real-time solar punishment on a surface at 2:30pm in January. That gap matters. The Problem: Ratings…
For decades, building performance has been judged by a narrow set of metrics. Mostly R-values. Sometimes U-values. Occasionally energy modelling outputs that look precise but ignore how heat actually behaves…
For decades, the industry has defaulted to thicker insulation, higher R-values and bigger HVAC systems. Yet governments around the world are now testing something far more direct. Control the surface.Control…
Social housing is meant to protect the most vulnerable. Yet across Australia and globally, many social housing projects are thermally fragile. They meet minimum code. They tick the box on…
Urban heat is not a future problem. It is already driving higher energy demand, worsening heat stress and increasing night-time temperatures in our cities. If councils want measurable impact, they…
Where They Succeed and Where They Fall Short Cool roof policies are now embedded in building codes across the US, Europe and parts of Australia. On paper, they make sense.…
White roofs are everywhere. High solar reflectance. Lower surface temperatures. Ticked compliance boxes. On paper, that looks like progress. In reality, reflectance is only one part of heat transfer. If…
Passive Cool Roofs That Cut Heat Load Before It Enters Your Building A cool surface is not a new idea. What’s new is treating the roof as a thermal management…
Looking to join one of the world’s leading coatings companies. Contact us if you’re a quality applicator looking for new products and markets!
Genuine SPI COATING PRODUCTS can only be purchased from SPI Authorised Representatives displaying the SPI Authorised Logo. Note: All reduced energy claims - results may vary in different conditions and locations.
