The Difference between Warm & Cold Roofs 

The decision to use either a warm roof or a cold roof depends on a number of factors. While they both still have their benefits when deciding on what to use, you should consider the following elements like where you are located (whether it is a warm or cold climate), the insulation needed and the structural support.  

When taking the factors into consideration, it will be easier to decide which roof is suited to you. While the difference is stark between the two, Southern Cross Projects Roofing & Waterproofing have outlined the important facts in one convenient place. 

In this blog, we will digress further into the difference between the two and which is best to suited to your property. 

When to have a cold or warm roof? 

In colder climates, a cold roof is the preferable option, as a cold roof needs more assistance to withstand the weight of the insulation and the rainwater drainage systems. Cold roofs also help to keep the property warmer in the winter and colder months.  

However, in warmer climates, a warm roof is the preferred option, as they help to keep the property cooler. Warm roofs need more support to carry the weight of the insulation, and in both cases, the insulation is the most important aspect, as neither system will work efficiently without them.  

Warm Roofs  

Warm roofs help to keep properties cooler. When talking about warm roofs, people often refer to the space between the pitch of the roof and ceiling as this is essentially where the insulation sits. The simplicity of the warm roofs structure has led to its popularity within the warmer climates. Warm roof installations not only improve the aesthetic of the property, but they also provide many benefits like:  

• The insulation from the warm roof helps to reduce energy bills on your property. 
• Warms roofs add a luxurious feel to the property and the comfort of the home. As warm roofs thrive in warmer climates, they are designed to even out the temperature within homes and keep them cooler. This adds more comfortability within the properties, especially in summer months.  
• When warm roofs are installed correctly, warm roofs can help in expanding your current roof’s lifespan from the weather. 
• Lastly, warm roofs do not require a long, tedious installation as they can be installed easily during the construction process, further adding to their popularity.  

What properties are best suited to warm roofs? 

Warm roofs are most commonly found on commercial buildings, like offices and warehouses because they have a larger surface area and need to preserve their heat at a fixed rate.  

Though nowadays, you can find warm roofs on garages, conservatories, and outbuildings on domestic properties as they can improve energy ratings and reduce construction times.  

The detailed installation process of our warm roofs allows for a far more durable alternative to traditional roofs because the insulation protects against condensation and moisture. 

Warm Roof Insulation  

The insulation materials for warm roofs can come in a variety of materials like rigid boards, spray foam or loose fill. However, the most common and popular form is the rigid board, renowned for its durability and superior thermal performance.  

As warm roofs are commonly found on office buildings and warehouses, there are often made with fire-resistant materials used throughout the installation process to improve the safety and well-being of the workers and employers.  

Cold Roofs 

Cold roofs are immensely popular for homes in colder environments as they help to keep the properties temperature cooler in the summer and warmer in the winter. Cold roof insulation is an essential part of a healthy home, as it creates space between the roof’s deck and insulation, thus allowing for a more streamline ventilation of air to pass through.  

What differentiates cold roofs to warm roofs is the fact the insulation sits directly above the ceiling’s plasterboards. By implementing this system, this reduces the build-up of condensation by offering ample ventilation.  

Cold Roof Installation 

When installing cold roofs, they have many benefits that will improve your property, whether for a residential or commercial building. Cold roofs are less likely to face the same issues as traditional roofs, as the insulation prevents the build-up of moisture.  

Cold roofs have improved energy efficiency because they help to keep the building cooler in the summer months and warmer in the colder months. Studies have shown cold roofs can reduce cooling costs by up-to 30%. 

In warmer climates or larger commercial buildings where an HVAC system is installed, a cold roof can help maintain the interior temperature by preventing heat from escaping. 

The lifespan of a cold roof is typically much longer than that on traditional roofs, due to the insulation which helps protect it from extreme temperatures. These extreme temperatures can cause premature ageing and deterioration in materials over time. 

The insulation beneath the roof rafters also help to keep your home at a comfortable temperature year-round. Installing a cold roof, will not affect the exterior height of the property, which can be important when considering building limitations and restrictions.  

Roofing Experts 

Whether you choose between a cold roof or a warm roof for your home, both can provide an array of advantages for you and your home. At Southern Cross Projects Roofing & Waterproofing, we strive to instil the finest roofing systems across the UK that will last a lifetime.

Our skilled team of craftsmen can create, replace, repair and insulate a flawless roofing system that offers protection for your property in a unique way. Enquire today to see how we can help bring your vision of a luxury roof to your property into reality.

Enquire today to see how we can help bring your vision of a green roof on your property into reality.