The Role of Roofing Insulation in Energy Efficiency

Roofs are vital to any property, shielding it from rain and acting as a protective shell. There are numerous parts of roofing systems, each playing an integral role in the structural integrity of your property.

However, roofing insulation is often overlooked—despite its importance. From maintaining a consistent temperature in your home to reducing energy bills, roofing insulation is essential for any property.

Read on to learn more about its key functions.

What is roof insulation?

Roof insulation is made of specialist materials that ensure a property retains warmth in the winter and doesn’t let too much heat in during summertime. Its primary purpose is to regulate your property’s temperature, ensuring it remains optimal at different times.

Depending on the type of roof you have, there are two options available for insulation.

Flat roof insulation

Properties with flat roofing systems can install insulation on the top of the deck, which reduces the risks of condensation and maintains a consistent temperature.

Many people prefer flat roofs, but they come with risks, including increased vulnerability to fluctuating temperatures. However, effective insulation will protect the roof and attic.

Loft insulation 

Properties with pitched roofs often use loft insulation, which goes between rafters instead of directly onto the roof deck. Loft insulation is relatively easy to install and can keep the loft space warm, preventing heat loss.

Ensuring adequate insulation in the loft area can prevent condensation from forming.

The benefits of roof insulation

Roof insulation requires an initial investment, but its benefits mean you can save money in the long run and reduce your carbon footprint. Whether it’s cold or warm insulation, insulating your roof is wise.

Saving money 

Energy bills are a significant expense for most households in the UK, with British Gas revealing the average annual direct debit for a three-bedroom house is over £2000. Pay-on-receipt customers spend over £1000 more, but roofing insulation can reduce these bills.

According to The Guardian, floor insulation can result in 10-15% savings, and roof insulation often saves households hundreds each year.

Insulation can also decrease your electricity costs during warmer months by reducing the need for fans or air conditioning systems.

Protecting your roof 

Roofs deal with a lot of rain, wind and even snow, which inevitably compromises their lifespan. If heat rises from the home into the attic or roof, it can cause ice to melt, resulting in mould and other issues.

Over time, mould and fungus can cause the roof to degrade, so you might need to pay for expensive repairs or a replacement. However, properties with proper insulation can maintain a consistent temperature, preventing damage from the elements.

Considering that a new roof costs between £3,000 and £8,000, insulation can prolong your current roof’s lifespan.

Energy efficiency 

We all know that our previous and current actions impact the environment, and minor changes will make a significant difference in the future. Investing in roof insulation ensures you reduce the energy you use, promoting an eco-friendly way of living.

The insulation will protect valuable materials and also ensure there’s less pollution. While it might seem like a small contribution, the planet can begin to heal if everyone reduces their energy bills.

Choosing the right insulation materials

There are numerous insulation materials to choose between, depending on your roof style and budget. Before selecting a roofing material, it’s essential to check the deck and shingles for any issues.

Using roofing felt can add an extra layer of waterproofing, enabling you to double the protection.

Insulation panels/boards 

Insulation boards are ideal for flat roofs because they’re simple to install and thick enough to prevent heat loss. While loose-fill insulation has benefits, panels are better to walk on and offer superior thermal insulation.

Fibreglass 

You’ve probably heard of fibreglass before, and the material is highly popular for roofs. Its affordability and thermal properties make glass wool an excellent choice – but you can only use it if the roof has an underlay.

Spray foam 

Perhaps the easiest insulation material to work with, spray foam is renowned for seamlessly filling small gaps and protecting your roof and property. Once applied, the substances merge and begin to spread.

Rock wool 

Rock wool is a popular alternative to fibreglass, as it has a higher density and can block out sound. Manufacturers melt and spin volcanic rocks to create a durable roofing material that will perform for years.

Things to consider before insulating your roof

Insulating your roof can result in years of hassle-free protection, but it’s vital to consider which insulation technique suits your needs. Here’s what you should think about before buying insulation materials:

Cold or Warm? 

Both cold and warm insulation have their benefits, but placement is the key difference. Warm insulation goes above the roofing deck, which maintains consistent heat, while cold insulation goes between rafters and joints.

Cold insulation is cheaper and easier to lay, but the warm method offers effective thermal protection.

What’s your budget? 

Some roofing materials will be more expensive than others; there’s no disputing that. However, remember the long-term costs when deciding which is right for your needs.

Cheap materials might seem like a great idea, but you could have to pay for repairs or deal with them not providing adequate insulation.

Is it a new build? 

Warm roof insulation is more accessible for new builds, but older properties can still install it. However, if you’re looking for a quick solution, cold insulation is much easier, and people with general DIY skills can usually apply it.

Final thoughts

Roofing insulation is a positive step towards living more sustainably and saving money. When you invest in the right materials, you can take advantage of a roof that won’t let you down and reduce your carbon footprint.

If you’re looking for insulators, E-Roofing has a wide selection of materials. Shopping with us gives you access to a team of dedicated customer service professionals and roofing materials from the UK’s most reputable manufacturers of roofing materials.