Best Roof Insulation Wool of 2025

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Roof insulation wool is a highly effective and eco-friendly solution for insulating your home or building. Made from natural materials such as sheep's wool, it is a sustainable alternative to synthetic insulation. Roof insulation wool is easy to install and provides excellent thermal and acoustic insulation, helping to reduce energy bills and noise pollution. It also has the added benefit of being fire retardant and can help stabilise internal temperatures. Overall, roof insulation wool is a great choice for those looking for an environmentally conscious and practical way to insulate their property.
At a Glance: Our Top Picks
Top 10 Roof Insulation Wool
Knauf Insulation Earthwool Loft Roll 100mm
The Knauf Insulation Loft Roll offers a generous coverage of 13.89 square metres, making it an excellent choice for insulating your loft space. With a thickness of 100 millimetres, this insulation helps to maintain your home's temperature, keeping it warm in winter and cool in summer. This product is manufactured by BPS Access Solutions, a trusted name in insulation. By choosing this roll, you can improve your home's energy efficiency and reduce heating costs, making it a smart investment for any homeowner.
High Loft™ ECO-Thermal Insulation Roll - Itch Free
The High Loft™ Insulation Roll offers effective thermal insulation for both new and renovated cold rooms. With 66% of heat loss occurring through uninsulated walls, this product helps significantly reduce energy costs by creating a warmer living environment. Made from 70% recycled polyester, it is an eco-friendly choice that also ensures comfort, as it is both itch-free and non-allergenic. Covering an area of 1.85 m², this insulation can easily be doubled up to enhance thickness, providing added efficiency to your home.
High Loft™ Eco-Thermal Insulation Roll
The High Loft™ Insulation Roll offers effective thermal insulation for both new and renovated cold room constructions. By reducing heat loss significantly, it ensures your home remains warm and comfortable. Made from 70% recycled polyester, this eco-friendly option is not only sustainable but also itch-free and non-allergenic, making it a safe choice for your family. With a thickness that can be doubled for enhanced insulation, you can enjoy greater energy efficiency in your living space.
Knauf Loft Roll 150mm Insulation Wool
The Knauf Loft Roll Insulation offers excellent thermal insulation for your loft ceiling, ensuring a comfortable living space. Its semi-perforated rolls allow you to easily divide the material into smaller widths, making installation more manageable. You can effortlessly install the first layer between the joists and then add a second layer at a right angle for enhanced efficiency. This insulation is also odourless and resistant to rot, fungi, mould, and bacteria, ensuring a healthier environment in your home.
High Loft Itch Free Thermal Insulation Roll
The High Loft Thermal Insulation is designed to provide effective thermal insulation for cold rooms in both new and renovated buildings. Its itch-free composition ensures comfort during installation, making it ideal for those sensitive to allergens. Made from 70% recycled polyester, this insulation not only helps the environment but also enhances energy efficiency, keeping your space warm and cosy. With a thickness that can be doubled to around 100mm, you can easily customise the insulation to meet your specific needs.
High Loft™ ECO-Thermal Loft Insulation Roll
The High Loft™ Insulation Roll offers efficient thermal insulation, ideal for both new builds and renovations. This itch-free insulation ensures comfort by preventing allergic reactions, making it suitable for everyone. Made from 90% recycled polyester, it not only promotes sustainability but also enhances energy efficiency in your home. With dimensions of 8 metres in length and 370 mm in width, it can be easily adapted to meet your insulation needs and create a warmer living environment.
Knauf Earthwool Loft Insulation Roll 150mm
The Knauf Earthwool Loft Roll is designed for sloping roofs at ceiling level, providing effective insulation for your home. Each roll measures 150mm in thickness and covers an impressive area of 9.17m², making it convenient for larger spaces. With a minimum thickness requirement of 300mm, this insulation ensures optimal thermal efficiency, helping to keep your home warm in winter and cool in summer. By using this insulation, you can improve energy efficiency and potentially reduce heating costs.
Rockwool RWA45 Acoustic Insulation Slab Pack
The Rockwool RWA45 Insulation Slabs offer excellent thermal insulation, helping you maintain a comfortable temperature in your home. Their acoustic properties significantly reduce noise, creating a quieter environment. With an A1 Euroclass fire rating, these slabs ensure a high level of fire safety, giving you peace of mind. Additionally, their water-repellent feature protects against moisture, enhancing durability and performance. This combination of features makes them a reliable choice for your insulation needs.
Knauf Earthwool Loft Insulation Rolls 200mm
The Earthwool Loft Rolls offer a practical solution for enhancing your home's insulation. With four rolls, each covering 6.84m², you can easily add a top-up layer or fill gaps between ceiling joists. Their lightweight design makes handling straightforward, ensuring you can manage the installation with ease. The partially cut perforations provide flexibility, allowing you to adjust the insulation to suit your needs, helping you achieve optimal energy efficiency and comfort in your living space.
Knauf Earthwool 3 x Insulation Loft Rolls
The Knauf Earthwool Loft Rolls are an excellent choice for enhancing your home's insulation. With a thickness of 200mm and a total coverage of 20.52m2, these rolls are perfect for topping up existing insulation or filling gaps between ceiling joists. Their lightweight design makes installation easier, while the partially cut perforations offer flexibility in application. You can expect outstanding thermal performance, helping to keep your home warm and energy-efficient throughout the year.
Frequently Asked Questions (FAQs)
1. Is wool good for insulation?
Wool's natural structure makes it incredibly effective as an insulator. Each wool fiber is composed of protein molecules (keratin) organized into five follicles. These fibers effectively trap air, moisture and harmful chemicals.
2. What is the best wool insulation?
Sheep's wool has good insulating properties, helping to keep heat in during the winter and heat out during the summer. Sheep's wool insulation is perfectly safe to touch, causing zero irritation, therefore no specialist clothing to install it. The wool is very flexible and therefore very easy to install in the home.
3. Is insulation wool harmful?
The downside to mineral wool One is that mineral fibers can break off and become airborne; when we breathe those fibers in they can cause health problems. ... Formaldehyde is a known human carcinogen, and if a lot of it escapes into the indoor air, that would clearly be a health concern.
4. What is wool insulation called?
Mineral wool insulation (also called rock or slag wool insulation): Made from rock, blast furnace slag, and other raw materials which are melted and spun into fibers to resemble the texture of wool. Mineral wool comes in batts, rolls or loose-fill forms.
During our roof insulation wool research, we found 27 roof insulation wool products and shortlisted 10 quality products. We collected and analyzed 6,470 customer reviews through our big data system to write the roof insulation wool list. We found that most customers choose roof insulation wool with an average price of £76.89.
The roof insulation wool are available for purchase. We have researched hundreds of brands and picked the top brands of roof insulation wool, including BPS Access Solutions, ARZER, Knauf, High Loft, Rockwool. The seller of top 1 product has received honest feedback from 83 consumers with an average rating of 4.6.

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.