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Choosing loft insulation isn’t simply a case of picking the thickest material or the product with the biggest headline specification. Different insulation systems work in different ways, and the right choice can depend on your loft construction, available space, existing insulation, thermal requirements and what you want to achieve.
At Universal Eco Homes, we offer three professional loft insulation systems: SuperFOIL Multilayer, Rockwool and Sheep Wool. Each has its own characteristics and advantages, so understanding the differences can help you make a more informed decision about your home.
A significant amount of heat can escape through an inadequately insulated roof. When your loft insulation is missing, compressed, uneven or simply not sufficient for the property, your heating system may need to work harder to maintain a comfortable temperature.
The right insulation creates a thermal barrier between your heated living space and the colder loft above. It can help reduce heat loss, improve comfort and make your home more energy efficient.
But not every loft needs the same insulation system.
The construction of the property, the amount of available space and the condition of your existing insulation all need to be considered before deciding which product is most appropriate.
We install three professional insulation systems, each offering different benefits depending on the construction of your property, the space available and the level of thermal performance you’re looking for. From the space-efficient design of SuperFOIL Multilayer to the proven performance of Rockwool and the natural properties of Sheep Wool, we can provide an insulation solution suited to a wide range of homes.
Choosing the right insulation isn’t simply about picking one product over another. Our team can assess your existing insulation and loft space, explain the differences between each system and help you understand which option is most appropriate for your property.
Heat naturally moves from warmer areas towards colder areas. During the colder months, the heat produced by your heating system rises through your home and, without an effective thermal barrier, can escape into the loft and through the roof. This means your heating system may need to work harder to maintain a comfortable temperature.
Installing suitable loft insulation helps slow this movement of heat. A properly insulated loft can make your home feel more comfortable while reducing unnecessary heat loss. However, the performance you achieve depends on much more than simply putting insulation into the loft. The material, installation method, coverage, existing construction and ventilation all need to be considered together.
This is why choosing the right loft insulation system for the property is so important.
One of the biggest advantages of SuperFOIL is its space-efficient construction. Traditional insulation materials can require a considerable depth, whereas SF19+ has a nominal thickness of 45mm. This doesn’t mean that every installation will require only 45mm overall, because the complete construction and required air spaces must always be considered, but the compact product itself can be beneficial where space is restricted.
SuperFOIL also combines several functions within one product. As well as providing insulation, SF19+ incorporates a radiant barrier and vapour control functionality. This can simplify certain insulation build-ups and make it a versatile option for appropriate applications.
Another consideration is longevity. SuperFOIL states that its products have a guaranteed minimum lifespan of 25 years when correctly installed, with eligible projects completed through its Approved Installer Programme able to receive the applicable 25-year product warranty, subject to the programme’s terms and conditions.
Rockwool is a mineral wool insulation material that has been used extensively across residential and commercial construction. Unlike SuperFOIL, it is a fibre-based insulation system and is generally installed at a greater thickness where the construction allows for it.
Its main appeal is its combination of thermal insulation with other useful characteristics. Rockwool insulation installation provides acoustic insulation, helping reduce the transfer of sound, while its mineral wool construction also offers strong fire-performance characteristics.
For a conventional loft with sufficient available space, Rockwool can therefore provide a straightforward and well-established approach to improving thermal insulation.
What Are the Benefits of Rockwool?
The thermal performance of Rockwool makes it suitable for many conventional loft applications. By creating a thicker insulating layer between your heated living space and the colder loft area, it helps reduce the amount of heat passing through the building envelope.
Another advantage is its acoustic performance. The structure and density of mineral wool can help absorb and reduce sound transmission, which can be useful in homes where reducing noise is an additional consideration.
Fire performance is another characteristic homeowners may consider. Mineral wool products such as Rockwool are non-combustible and are widely used where fire performance is an important part of the overall building design.
Rockwool is therefore often considered where there is adequate space for a conventional insulation build-up and the homeowner wants thermal insulation alongside acoustic and fire-performance characteristics.
Sheep Wool loft insulation offers a very different proposition. Rather than being manufactured from mineral or synthetic materials, it is made from a naturally renewable material and provides an insulation option for homeowners who prefer natural products.
Sheep Wool is naturally breathable and can help regulate moisture within the building environment when used in an appropriate construction. It also provides thermal insulation, helping reduce heat transfer between your living space and the colder areas of the property.
For homeowners who place importance on the materials being used within their home, Sheep Wool can provide an alternative to more conventional insulation products.
What Are the Benefits of Sheep Wool?
One of the main attractions of Sheep Wool is its natural origin. Wool is a renewable material, making it an appealing option for homeowners who want to consider the environmental characteristics of the products being installed in their property.
Its breathable nature is another consideration. Moisture management is an important part of any insulation project, particularly in older properties where the construction may behave differently from a modern building. The complete wall or roof build-up needs to be considered, but Sheep Wool can be suitable for applications where a breathable natural insulation material is desired.
It also provides effective thermal insulation. When correctly installed in an appropriate application, Sheep Wool helps reduce heat transfer and contributes to the overall thermal performance of the property.
SuperFOIL Multilayer insulation takes a different approach from conventional mineral wool. Instead of relying on a single thick layer of insulation, SuperFOIL SF19+ uses a multilayer construction incorporating reflective and insulating layers within a relatively compact product.
SF19+ has a nominal thickness of 45mm, which can make it particularly useful where available space is limited. The product is also designed as a 3-in-1 system, combining insulation with a radiant barrier and vapour control functionality.
The reflective layers are designed to reduce radiant heat transfer, while the insulating layers contribute to the overall thermal resistance of the system. When installed as part of the correct construction, these different elements work together to provide a space-efficient insulation solution.
SuperFOIL SF19+ is designed for suitable roof, wall and floor applications, meaning its use isn’t restricted to loft insulation. It can also be incorporated into suitable retrofit projects where improving insulation without creating a large build-up is an important consideration.
Universal Eco Homes is a SuperFOIL Approved Installer, allowing us to professionally install the system in accordance with the relevant installation requirements.
What Are the Benefits of SuperFOIL?
One of the biggest advantages of SuperFOIL is its space-efficient construction. Traditional insulation materials can require a considerable depth, whereas SF19+ has a nominal thickness of 45mm. This doesn’t mean that every installation will require only 45mm overall, because the complete construction and required air spaces must always be considered, but the compact product itself can be beneficial where space is restricted.
SuperFOIL also combines several functions within one product. As well as providing insulation, SF19+ incorporates a radiant barrier and vapour control functionality. This can simplify certain insulation build-ups and make it a versatile option for appropriate applications.
Another consideration is longevity. SuperFOIL states that its products have a guaranteed minimum lifespan of 25 years when correctly installed, with eligible projects completed through its Approved Installer Programme able to receive the applicable 25-year product warranty, subject to the programme’s terms and conditions.
There is no universal answer because the best insulation system depends on the property rather than simply the product itself.
For example, SuperFOIL loft insulation insatllation may be particularly interesting where available space is limited because of its compact multilayer construction. A homeowner with a conventional loft and plenty of available space may instead consider Rockwool, particularly where acoustic and fire-performance characteristics are important.
Sheep Wool can appeal to homeowners who prefer natural and renewable insulation materials and want an alternative to mineral or synthetic products.
The existing condition of the loft is another important consideration. If you already have insulation installed, it may be possible to improve the existing system rather than completely replacing it. In other situations, damaged, unsuitable or deteriorated insulation may need to be removed before a new system is installed.
This is why we recommend assessing the loft before deciding which product to use.
In some properties, different insulation materials can form part of the same overall insulation build-up. However, combining products isn’t simply a case of putting one material on top of another.
The complete construction needs to be considered, including ventilation, moisture movement, condensation risk, air spaces and the characteristics of the materials being combined. This is particularly important when incorporating multilayer insulation into an existing construction.
If you’re considering adding SuperFOIL to an existing mineral wool installation, for example, the existing loft should be assessed before work begins. The correct solution will depend on how the complete roof construction is designed.
The amount of available space is one of the first things to consider. A conventional insulation system may require a greater depth, whereas a multilayer product can provide a more compact solution in suitable applications. However, the available space needs to be considered alongside the complete construction rather than looking at product thickness alone.
The existing insulation is also important. If it is compressed, uneven or insufficient, an upgrade may improve the overall thermal performance. If it is damaged or unsuitable, replacement may be more appropriate.
You should also consider what you want from the insulation. Some homeowners are primarily concerned with reducing heat loss, while others may be particularly interested in acoustic properties, fire performance, natural materials or making the best possible use of limited space.
A professional loft survey allows these factors to be considered together.
If you’re unsure whether SuperFOIL, Rockwool or Sheep Wool is right for your property, you don’t have to make the decision based on product descriptions alone.
IMPORTANT NOTICE!! There are a number of companies impersonating our genuine business to mislead customers. Universal Eco Homes, The Roof Cleaning Experts and The Loft Insulation Experts are a part of Universal Eco Homes Group Ltd. We are not connected to any other companies in any other form, either implying to be us or our aftercare team. We care about all our customers, and if you are unsure, please call our head office for reassurance 0800 047 2404
