ISOLENA Premium Sheepwool Insulation Rolls
£131.12 – £144.74Price range: £131.12 through £144.74
Sheepwool Premium is a high density, (20kg/m3) and have a thermal conductivity of 0.034W/m2k. Premium is suitable for a wide range of applications, including walls, rafters, ceilings and floors. It is particularly ideal for walls and rafters due to its high density.
Isolana Premium Sheepwool insulation is high density, (20kg/m3) and has a thermal conductivity of 0.034W/m2k. Premium is suitable for a wide use of applications, including loft, wall, rafters, ceilings, and floor insulation. Isolena premium insulation is available in a variety of convenient dimensions.
100% Pure Wool with full Ionic Protect.
Ionic Protect is a new biocide free wool protection system and EAD/CUAP tested. Ecological, sustainable and durability proven.
The innovative wool protection process video
ISOLENA Premium Sustainability
Wool is a naturally occurring fibre, which means it is a renewable raw material and can be a sustainable choice when responsibly sourced. In lifecycle assessments, emissions are often measured across stages such as A1–A3 (covering raw material supply, transport, and manufacturing). It is also durable and adaptable at end of life: it can often be reused as insulation, recycled into other products, or biodegraded under suitable conditions.
Isolena Sheep wool Insulation Premium rolls are high density, (20kg/m3) and have a thermal conductivity of 0.034W/m2k
| High Performance | Premium is a highly effective insulation roll with a superior thermal performance over almost all natural and man-made fibre insulation products. Premium is made of pure new wool fibres, which hold their shape and thickness right throughout their lifetime. Being produced from 100% pure wool fibres, Premium is a fully breathable material that will maintain it’s thermal efficiency even in the harshest climates. The high density of wool fibres in Premium make it an excellent acoustic as well as thermal insulation. |
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| Safe & Healthy | Premium is a safe material, not only to handle and install, but to have within your home. Wool fibres are completely safe to touch and work with, requiring no special handling or protective equipment. Premium insulation rolls can be installed on top of existing glass or mineral wool, reducing the opportunity for their potentially hazardous particles to become airborne. Due to it’s high moisture content, wool does not support combustion and will extinguish itself when the source of flame is removed. In the event of a fire, wool is a much safer material than man-made products as it does not release poisonous fumes. |
| Environmental Benefits | Sheepwool Insulation products have unrivalled environmental credentials, making it them the “greenest” choice of any insulation product on the market. Sheep’s wool is a naturally occurring fibre, so it is a renewable and sustainable source of raw material. Wool has zero global warming potential and is carbon neutral, so choosing Premium means your insulation will have no environmental impact. Sheepwool Insulation also requires only a fraction of the energy to produce in comparison to other insulation materials. At the end of its useful life, Premium can be reused as insulation, recycled into other wool products or buried where it will eventually biodegrade. |
| Value | Premium is initially a higher cost product than most common insulation types. However, Premiums performance advantage and lifespan, means that over it’s lifetime, it will perform considerably better than it’s competitors. At Premiums density, Sheepwool Insulation continues to supply the lowest priced pure wool insulation range in the world, Premium offers a natural insulation product range that can be used right throughout a building, making it an effective solution for a range of applications. For convenience, Premium is produced in 100mm & 150mm . Due to it’s higher performance, Premium will often require less material thickness than it’s competitors to achieve a similar thermal performance and can be used in situations where man-made fibre products would not meet building regulations. |
| Applications | 1: Attic/Loft (Ceiling Level) 2: Attic/Loft (Between Rafter) 3: Floors (Between Joists) 4: Internal Walls (Between Studs) 6: External Walls (Between Studs) |
| Width | 380, 570 |
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| Size | 150, 200 |
FAQs
What is ISOLENA Premium sheep wool insulation?
ISOLENA Premium is a high-density sheep wool insulation (20kg/m³) made from 100% pure sheep’s wool, with no synthetic additives or fibres. It is treated with Ionic Protect® for durability and is fully natural, recyclable and NaturePlus certified.
What is ISOLENA Premium used for?
ISOLENA Premium is designed for high-performance thermal insulation, including:
• Roof insulation (between rafters)
• External and internal wall insulation (between timbers)
• Floor and ceiling insulation (between Joist)
• Loft Insulation (between & over joists)
It is particularly suited to deeper insulation build-ups and energy-efficient construction.
What is the thermal performance of ISOLENA Premium?
ISOLENA Premium provides strong thermal performance with:
• Thermal conductivity: 0.034 W/mK (λD)
This makes it an effective natural alternative for improving energy efficiency in buildings.
Is ISOLENA Premium breathable?
Yes. ISOLENA Premium is fully vapour open with a vapour resistance factor of:
• µ = 1
This allows moisture to move freely through the structure, helping to reduce condensation risk.
Does sheep wool insulation help control moisture?
Yes. ISOLENA Premium naturally regulates moisture by:
• Absorbing excess humidity
• Releasing moisture when conditions change
• Helping stabilise internal environments
This is ideal for solid wall and vapour-open construction systems.
Is ISOLENA Premium safe to handle?
Yes. ISOLENA Premium is a safe, natural insulation material:
• No borates or harmful chemicals
• Non-irritating to skin and lungs
• Easy to cut and install
It is suitable for both professionals and DIY use.
Is ISOLENA Premium resistant to mould and pests?
Yes. The product offers strong durability:
• Mould growth rating: 0 (no growth)
• Insect resistance: Class 0
This helps ensure long-term performance in the correct build-up.
What thicknesses are available?
ISOLENA Premium is available in thicker insulation formats, including:
• 150mm & 200mm thicknesses
• Roll widths – 380 & 570mm
These sizes are ideal for achieving low U-values in roofs and walls.
Is ISOLENA Premium environmentally friendly?
Yes. ISOLENA Premium is a sustainable insulation solution:
• Made from renewable sheep wool
• Fully recyclable
• Certified with the NaturePlus eco-label
It is well suited to low-carbon building projects.
What is the fire performance of ISOLENA Premium?
ISOLENA Premium achieves:
• Fire classification: D-s2, d0
This complies with standard fire performance requirements for insulation materials.
Where is ISOLENA Premium best used?
ISOLENA Premium is ideal for:
• Roof insulation projects
• Deep retrofit applications
• Timber frame buildings
• Energy-efficient new builds
Its combination of thermal performance and moisture control makes it particularly effective in breathable construction systems.
Does SHEEPWOOL insulation really purify indoor air?
Sheep wool insulation can help improve indoor air quality by naturally absorbing and binding certain airborne pollutants. The wool fibres contain keratin, which has the ability to react with and lock away substances such as formaldehyde commonly found in indoor environments.
Sheep wool also regulates humidity by absorbing and releasing moisture, helping to maintain a more balanced internal environment, which not only contributes to overall air quality and comfort, but also helps prevent the high and low humidity levels in which mould and other harmful organisms thrive.
While it should not be considered a replacement for ventilation, sheep wool insulation can play a supporting role in creating a healthier indoor environment when used as part of a breathable building system.
Is Sheep wool insulation without plastic better?
Sheep wool insulation that does not contain plastic is generally considered a more natural and sustainable option.
This supports the performance of breathable building systems, particularly in solid wall, timber frame, and heritage properties where moisture management is critical.
Plastic-free sheep wool insulation also aligns more closely with sustainable construction principles, offering a lower environmental impact and maintaining the natural characteristics of the material.
Are sheep harmed in the production of sheep wool insulation?
No. Sheep wool insulation is made using wool that is shorn from sheep as part of their normal annual care. Shearing is essential for animal welfare, helping to keep sheep clean, healthy, and comfortable, particularly in warmer months.
The wool used for insulation is typically a by-product of the agricultural industry, meaning it makes use of a natural material that would otherwise have limited value.
When responsibly sourced, sheep wool insulation provides a sustainable and ethical way to use a renewable resource without harm to the animals.
How much moisture can sheep wool insulation absorb?
Sheep wool insulation can absorb up to 33% of its own weight in moisture without losing its thermal performance.
This helps regulate humidity within the building and reduces the risk of condensation.
How long does sheep wool insulation last?
Sheep wool insulation is extremely durable. While it carries a declared service life of 50 years, real-world performance is likely to exceed this considerably when installed within a well-designed, vapour-open building fabric.
Can sheep wool insulation be reused or recycled?
Yes. At end of life, sheep wool insulation can be:
• Reused if carefully removed
• Recycled into other wool-based products
• Composted and used as a natural fertiliser
• This supports a circular building approach.
How is sheep wool insulation produced?
The production process involves:
• Washing raw wool using water and natural processes
• Mechanically forming fibres without synthetic binders
• Using Ionic Protect® treatment for durability
This ensures a natural, low-impact manufacturing process.
Where does the sheep wool come from?
The wool used within ISOLENA brand products is sourced from European sheep farming, primarily as a by-product of agriculture.
This supports local supply chains and reduces environmental impact.