A Guide to the Types of Housing Insulation for UK Homes
- North East Insulation Services Ltd
- Aug 6
- 5 min read
As energy costs continue to rise, more UK homeowners are looking for effective ways to reduce heating bills and increase energy efficiency. One of the best solutions for achieving this is proper housing insulation. Insulation not only helps keep your home warm during the colder months but also prevents heat loss, making it easier to maintain a comfortable temperature year-round.
In this comprehensive guide, we will explore the different types of housing insulation available for UK homes, including loft insulation, cavity wall insulation, solid wall insulation, and more. We will also discuss the materials used and the benefits of each method, helping you make an informed decision for your home.
Moreover, we’ll touch on free home insulation options available through initiatives like Eco4 funding, which can help reduce the upfront cost of insulating your home.
Types of Housing Insulation for UK Homes
By understanding the different types of insulation available, homeowners can make informed decisions based on their property's unique needs and characteristics. Whether you're looking to insulate your loft, walls, or even a room in the roof, there are plenty of options that can improve energy efficiency, comfort, and help reduce heating bills.
Loft Insulation
Loft insulation is a highly effective and cost-efficient form of housing insulation, often considered one of the best options for homeowners. It involves placing insulation materials in the roof space to prevent heat from escaping through the ceiling. By installing loft insulation, heat loss can be significantly reduced, helping to maintain a comfortable temperature and lower your energy bills.
Common materials used for loft insulation include blanket insulation, typically made from fibreglass or mineral wool. This type is laid across the joists in the attic and is the most commonly used form of loft insulation. Another option is loose-fill insulation, which consists of materials like cellulose or mineral wool that are blown into the loft space. This method helps to fill all the gaps and crevices, ensuring maximum coverage.
Cavity Wall Insulation
Cavity wall insulation is designed for homes with a gap, or cavity, between the inner and outer walls. This space is typically filled with insulating material, which helps to reduce the amount of heat escaping through the walls. Cavity wall insulation can make a significant difference in reducing energy consumption and improving energy efficiency.
Common insulation materials used for cavity walls include polyurethane foam, which is injected into the cavity and expands to provide excellent thermal insulation. Mineral wool is another popular option, as it absorbs heat and helps to insulate the walls effectively. Polystyrene beads are also used, blown into the cavity to provide thorough coverage and strong thermal resistance.
Cavity wall insulation is suitable for most homes built after the 1920s. It is highly effective at reducing heat loss, helping to lower energy bills, and is generally a quick and non-disruptive process. However, it may not be suitable for homes with damp or solid walls, and problems can arise if the cavity is too narrow or blocked.
Solid Wall Insulation
For homes without a cavity, typically older properties, solid wall insulation offers an alternative solution. Solid walls, usually made of brick or stone, can result in significant heat loss due to the lack of a cavity to insulate. Solid wall insulation can be installed either on the inside or outside of the walls, depending on the home’s construction and available space.
External solid wall insulation involves attaching insulating material, such as expanded polystyrene, mineral wool, or polyurethane foam, to the outside of the walls. This is then covered with a protective render or cladding. Internal solid wall insulation is installed on the inside of the external walls, often using materials like plasterboard integrated with insulation.
Solid wall insulation is ideal for homes that lack cavity walls and can greatly reduce energy bills. External insulation also improves the appearance of the home and weatherproofs the building. However, this type of insulation tends to be more expensive than cavity wall insulation, and internal insulation can reduce the size of rooms. In some cases, external insulation may require planning permission, depending on the property’s location and the nature of the work.
Room-in-Roof Insulation
Room-in-roof insulation is perfect for homes with attic spaces that are being used as living areas, such as bedrooms, offices, or other rooms. This insulation type helps to regulate the temperature in the upper levels of the house, improving comfort and reducing energy consumption.
Fibreglass insulation is one of the most common materials used for insulating sloped ceilings and walls in room-in-roof spaces. Another option is spray foam, which is applied directly to the roof space and expands to fill gaps, providing a seamless thermal barrier. Spray foam offers the advantage of filling difficult-to-reach areas, making it particularly effective in creating a thorough insulation barrier.
Room-in-roof insulation enhances comfort in rooms with sloped roofs, helping to maintain a consistent temperature and preventing the rooms from becoming too hot in summer or too cold in winter. It also helps to prevent condensation issues in attic spaces. However, room-in-roof insulation can be more expensive to install than traditional loft insulation, and the process may be disruptive, especially in rooms that are already being used.

How to Choose the Right Insulation for Your Home
When deciding on the best insulation for your home, there are several important factors to consider. First, the age and type of your property play a key role in determining the most suitable insulation method. Older properties, especially those without cavity walls, may require solid wall insulation or room-in-roof insulation to effectively reduce heat loss.
Your budget is another crucial consideration. Some insulation methods, such as loft insulation and cavity wall insulation, tend to be more cost-effective compared to others, like solid wall insulation, which can be more expensive to install.
Energy efficiency goals are also important. If you aim to significantly reduce your energy bills, it may be worth considering a combination of insulation types, such as loft insulation and cavity wall insulation, as this can offer a more comprehensive solution.
Finally, if sustainability is a priority for you, opting for eco-friendly materials like cellulose insulation could be a good choice. You may also want to explore funding options, such as ECO4, which can help reduce the environmental impact of your insulation project while also providing financial support.
Free Home Insulation and ECO4 Funding
If you're looking to improve the energy efficiency of your home but are concerned about the cost, you may be eligible for free home insulation through government schemes like ECO4 funding. The Energy Company Obligation (ECO) is a government initiative designed to help homeowners reduce their energy bills by making their homes more energy-efficient.
The ECO4 scheme provides funding for energy-efficient home improvements, including loft insulation, cavity wall insulation, and solid wall insulation. Depending on your circumstances, such as being on certain benefits or living in a low-income household, you may be able to access free or subsidised insulation services.
North East Insulation Services can help you explore your eligibility for ECO4 funding, ensuring that you can improve your home’s insulation without breaking the bank.
Take Action for a Warmer, More Efficient Home
Insulating your home is one of the most effective ways to reduce energy consumption, lower your heating bills, and increase overall comfort. Whether you are considering loft insulation, cavity wall insulation, solid wall insulation, or room-in-roof insulation, each option has its benefits depending on the specific needs of your home.
If you’re unsure where to start or need help navigating the available government funding, North East Insulation Services is here to guide you through every step of the process. We can help you determine which insulation solution is right for your home and whether you qualify for free home insulation through ECO4 funding.
Contact us today to get started on making your home more energy-efficient and cost-effective. Don’t let another winter pass with high energy bills. Take control with professional insulation services from North East Insulation Services.




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