What different types of roof insulation are available?

Roof insulation is an important component of any home. It helps you maintain a comfortable temperature and also lowers energy costs. But with so many different roof insulation materials available, how do you know which is best for your property?

Why is roof insulation so important?

The majority of your home’s heat is lost through the roof, and this is especially important during the cold winter months. Good roof insulation will not only help keep your home warmer, but it will also help you to save money on your energy bills every month. 

What roof insulation materials are available?

Roof insulation materials vary in cost, effectiveness and material, so it’s important to do research prior to making a decision. Some of the common materials used for roof insulation are glass wool and rock wool, which are great for keeping heat locked in the house during winter. 


Loose fill roof insulation

Fibreglass Roof Insulation is an optimal choice when it comes to roof insulation. When you think of fibreglass insulation, you’ll probably think of the pink candyfloss-like rolls you often see in loft spaces. 

Fibreglass Insulation is highly durable, so you won’t have to replace it often or at all over the lifetime of a building. And one of the main benefits of fibreglass is that it is affordable and easily available. 

Made from very fine fibres of spun glass, fibreglass insulation is an effective insulator, but only if it doesn’t get wet. As such, fibreglass may not be the best choice for a damp loft. 

Spray foam

Spray foam roof insulation is an excellent option as it is highly efficient, shrinks to fill gaps, and offers superior moisture resistance – all the while being competitively priced. In addition, spray foam’s seamless application creates a unified look.

Insulation boards

Insulation boards are an excellent material for roof insulation as they offer superior thermal performance and excellent durability. Roof insulation boards can also reduce energy costs since they last longer than other roof insulation materials. 

A fitter will attach insulation boards to the rafters of your loft. They require specialist construction work —  they are not a DIY job. This means that insulation boards can often be more expensive to install than other forms of insulation. 

Rock wool

Rock wool is a great option for roof insulation due to its low cost, high durability and fire resistance. As well, because rock wool is made from natural basalt melt-down rocks, it’s also an environmentally friendly choice. When compared to other roof insulation materials rock wool has superior thermal capabilities. As a result, you don’t have to use as many layers for the same level of effectiveness. 

Its light yet resilient composition provides superior soundproofing and thermal efficiency, making it highly resistant to harmful radiation and temperature variations. It’s perfect for keeping your home comfortable no matter what the weather outside looks like. 

Loose fill insulation

Loose fill roof insulation provides an effective solution – it’s not only lightweight enough to provide optimal coverage, but can be easily installed without the risks posed by other roof insulation materials. Its low cost adds to its appeal – making it an attractive option for any homeowner looking to maximise energy-saving performance from their roofing project. 

The material itself is made from recycled cellulose or fibreglass. Loose fill insulation has the unique ability to “fill in” any holes that might exist in your roof’s structure – meaning no gaps will be left uninsulated – making it an excellent form of roof insulation.

How much does roof insulation cost?

The materials used for your loft insulation will affect the cost for your property. The price also depends on the property size and how long it takes to install the insulation. On average, loft insulation can cost anywhere between £400 and £500. 

Insulation panels or boards are the most affordable and popular option when it comes to loft insulation, which starts at £25 per square metre, whereas spray foam can reach £30 per square metre. 

Compare roof insulation providers with SpotDif

With SpotDif, you can quickly compare different roof installation providers to decide what works for your home and budget. Our price comparison tool makes it quick and easy to find the ideal solution in your local area.Browse our home deals today, or feel free to get in touch with any questions.


Luke Sartain is a Specialist in Home & Business Services for Spotdif. He has a passion for finding the best business deals in the UK and helping people save money on their home services. Luke is also a creative writer, and he enjoys writing short stories in his spare time.

He’s also got a wealth of knowledge when it comes to home deals – so if you’re looking for a new property, or want to renovate your current one, Luke is your man! He’s also experienced in business services, so whatever you need help with, he’s your go-to guy.

He has a passion for finding the best business deals in the UK and helping homeowners get the best home deals. Luke is also a creative thinker, and he brings this creativity to his work with Spotdif, where he helps businesses find the best services at the best prices.


Luke Sartain

Specialist in Home & Business Services

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