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Improve your home’s energy efficiency with high-quality loft insulation. Compare loft insulation providers with SpotDif.

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What's In This Guide

Insulate your loft

Loft insulation is a key element in ensuring your home is energy-efficient, comfortable, and environmentally friendly. By insulating the loft or roof space, you can significantly reduce heat loss, lower energy bills, and maintain a consistent temperature within your home. This not only saves money but also minimises your carbon footprint, making a positive impact on the environment.

However, navigating the plethora of loft insulation options can be daunting. That's where SpotDif comes in. Whether you're looking for cost-effectiveness, eco-friendliness, or specific material preferences, SpotDif helps streamline your search, connecting you with a range of qualified loft insulation providers in your area. By considering your home's specific needs and preferences, SpotDif ensures you find the ideal solution for your loft insulation needs.

Wondering where to start? Read on for our handy loft insulation guide and create a warm and cosy space.

What is loft insulation?

Loft insulation involves adding a thermal barrier in the loft space or roof of a building to reduce heat transfer. This means less heat escapes in the winter and less heat enters during summer, leading to a more energy-efficient and comfortable living environment. Effective loft insulation can significantly reduce the amount of energy needed to heat or cool a home, leading to lower energy costs.

The insulation is typically laid between the joists on the loft floor to insulate the space below or between the rafters to insulate the space within the roof itself. This process can vary depending on the insulation material used and the specific requirements of the property.

Loft insulation is an investment that not only benefits your wallet and home comfort but also supports environmental sustainability by reducing energy usage. But what types of loft insulation are available?

Types of loft insulation

You have several loft insulation options to choose from, and each material has its own set of advantages. Selecting the right type of loft insulation is a crucial decision that depends on several factors like the layout of your loft, budget constraints, and environmental considerations. 

Blanket insulation

Blanket insulation, generally made from glass or mineral wool, is one of the most commonly used types of insulation in residential spaces. Its popularity stems from its flexibility and ease of installation, making it a prime choice for lofts with standard, accessible space and regular joist spacing. 

The rolls come in various thicknesses, allowing homeowners to choose the level of insulation best suited to their needs. Its cost-effectiveness and user-friendly nature also mean that installation can often be undertaken as a DIY project, with the material easily cut to fit around any obstacles.

Loose-fill insulation

Loose-fill insulation encompasses environmentally friendly materials such as cellulose fibre, cork granules, and light mineral wool. It's particularly effective in lofts with irregular joist spacing or numerous obstructions, as it can be evenly distributed to cover all areas. The flexibility of loose-fill insulation is also beneficial for adding to existing insulation layers, making it a top choice for enhancing the thermal efficiency of older homes.

Sheet insulation

Sheet insulation is composed of rigid boards made from foam plastics like polystyrene, polyurethane, or phenolic foam, offering high insulation values. This type of insulation is especially useful in loft conversions or for insulating below the roof rafters. 

Not only does it provide excellent thermal resistance, but it also adds an element of structural strength, while efficiently maintaining indoor temperatures throughout the seasons.

Blown-fibre insulation

Blown-fibre insulation, which includes mineral wool or cellulose fibres, is applied using a special process where the material is mechanically blown into the loft space. This method ensures complete coverage in inaccessible areas, making it a fast and effective solution for difficult-to-reach loft spaces.

Spray foam insulation

Spray foam insulation is a chemical mixture that is applied using a spray gun and then expands to fill large and irregular spaces. 

Known for its high insulation levels and airtight sealing capabilities, spray foam is particularly adept at preventing drafts and ensuring a comprehensive barrier against external temperature variations.

Natural insulation

Increasingly popular, natural insulation options such as sheep's wool, hemp, and cotton are environmentally friendly and sustainable. These natural materials are not just excellent for insulating homes but also have moisture-regulating properties that help reduce damp and mold risks. 

They are ideal for homeowners seeking to reduce their environmental impact and often have the added benefit of soundproofing, contributing to a quieter, more serene home environment.

How to choose the right insulation for your loft

Now you have an idea of the types of loft insulation available, how can you make sure you opt for the best material for your property? Here are some areas to consider.

Your property age and type

Older homes might benefit more from certain types of insulation than modern builds. Consider the structure of your loft and roof.

Insulation thickness

Different materials offer different levels of insulation per inch of thickness — check the recommended levels for your area.

Environmental impact

If sustainability is a priority, natural insulation materials might be the best choice.


Cost can vary widely among insulation types. Balance your initial investment with potential energy savings over time.

Ease of installation

Some insulation types, like blanket or loose-fill, are more DIY-friendly compared to others like spray foam, which requires professional installation.

Space usage

If you're planning to convert your loft, rigid board insulation might be a better option for its structural elements and thinner profile.

Local climate

The effectiveness of different insulations can vary depending on weather conditions and humidity. Certain materials may perform better in your specific climate.

Building regulations

Ensure that your choice complies with local building codes and regulations, particularly concerning fire safety and thermal performance.

Choosing a loft insulation provider

Now you know more about your loft insulation options, how do you choose a provider? Here are a few elements to consider.

  • Experience and reputation: Look for a provider with a strong track record and positive customer reviews.

  • Certification and insurance: Ensure they have the necessary certifications and insurance coverages.

  • Quality of materials: High-quality materials will offer better insulation and durability.

  • Range of services: A provider who offers a range of insulation types can provide more tailored solutions.

  • Cost: Compare costs, but also consider the value and long-term savings each provider offers. Remember, you can use our handy SpotDif tool to help compare local professionals near you.

How SpotDif can help you find the ideal loft insulation provider

SpotDif simplifies your search for loft insulation. By comparing local providers, reviewing their services, and customer feedback, SpotDif ensures you get the best match for your specific insulation needs. Whether looking for the most sustainable option or the best value for your budget, we’ll connect you with the right professionals.

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Anna Dearden
Home sector specialist
I'm driven by curiosity, and constantly seeking to unravel and explore the ever-evolving trends in the realms of lifestyle, finance, and well-being.
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