Best Roof Insulation Wool of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 6 Feb 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

Knauf Insulation Earthwool Loft Roll 100mm Cover #TOP 1
Knauf Insulation Earthwool Loft Roll 100mm
ftb score rating icon 9.8
High Loft™ ECO-Thermal Insulation Roll - Itch Free Cover #TOP 2
High Loft™ ECO-Thermal Insulation Roll - Itch Free
ftb score rating icon 9.7
High Loft™ Eco-Thermal Insulation Roll Cover #TOP 3
High Loft™ Eco-Thermal Insulation Roll
ftb score rating icon 9.5

Top 10 Roof Insulation Wool

#TOP 1

Knauf Insulation Earthwool Loft Roll 100mm

100mm Knauf Loft Roll 13.89m2 (Large)
13.89m2
Knauf Insulation Earthwool Loft Roll 100mm Cover
Knauf Insulation Earthwool Loft 100 Millimetre x 13.89 Square Metre Per Roll Pack of 1 Roll

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.

What We Like
Generous coverage area
Effective temperature regulation
Improves energy efficiency
Trusted brand quality
#TOP 2

High Loft™ ECO-Thermal Insulation Roll - Itch Free

5 Metre x W370 mm x T110mm
White
High Loft™ ECO-Thermal Insulation Roll - Itch Free Cover
High Loft™ ECO-Thermal Building Construction Loft Insulation Roll - Itch Free & None Toxin - Sustainable & Eco Alternative to Glass Wool Insulation (5m x 370mm x 110mm)

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.

What We Like
Eco-friendly recycled materials
Itch-free and non-allergenic
Reduces heat loss significantly
Easy to install and handle
Enhances energy efficiency
#TOP 3

High Loft™ Eco-Thermal Insulation Roll

ARZER
5 Metre x W200 mm x T110mm
White
High Loft™ Eco-Thermal Insulation Roll Cover
High Loft™ ECO-Thermal Building Construction Loft Insulation Roll - Itch Free & None Toxin - Sustainable & Eco Alternative to Glass Wool Insulation (5 Metre x W200 mm x T110mm)

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.

What We Like
Eco-friendly recycled material
Itch-free and non-allergenic
Effective heat retention
Can be doubled for extra thickness
Easy to install
#TOP 4

Knauf Loft Roll 150mm Insulation Wool

Knauf Loft Roll 150mm Insulation Wool Cover
Knauf Loft Roll 150mm Combi-Cut Roll Insulation Wool (9.18m2 per roll)

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.

What We Like
Excellent thermal insulation
Easy to handle and install
Odourless and rot-resistant
Prevents mould and bacteria growth
#TOP 5

High Loft Itch Free Thermal Insulation Roll

8m x 370mm x 50mm
White
High Loft Itch Free Thermal Insulation Roll Cover
High Loft Itch Free Thermal Loft Construction Camper Van Insulation Roll (8m x 370mm x 50mm) 2.96 m²

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.

What We Like
Itch-free insulation
70% recycled materials
Energy efficient
Customisable thickness
#TOP 6

High Loft™ ECO-Thermal Loft Insulation Roll

386834797492
White
High Loft™ ECO-Thermal Loft Insulation Roll Cover
High Loft™ ECO-Thermal Building Construction Loft Insulation Roll - Itch Free & None Toxin - Sustainable & Eco Alternative to Glass Wool Insulation (8m x 370mm x 50mm) 2.96 m²

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.

What We Like
Itch-free comfort
90% recycled materials
Enhances energy efficiency
Suitable for renovations
Non-allergenic
#TOP 7

Knauf Earthwool Loft Insulation Roll 150mm

Knauf Earthwool Loft Insulation Roll 150mm Cover
6 x Knauf Insulation Earthwool Loft 150mm x 9.17 Square Metre Per Roll

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.

What We Like
High thermal efficiency
Covers large areas
Ideal for sloping roofs
Easy to handle
#TOP 8

Rockwool RWA45 Acoustic Insulation Slab Pack

Rockwool RWA45 50mm
Rockwool RWA45 Acoustic Insulation Slab Pack Cover
Rockwool RWA45 Acoustic Insulation Slab 1200mm x 600 x 50 Millimetre 9 Pieces Per Pack. 6.48 Square Meters

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.

What We Like
Effective thermal insulation
Excellent noise reduction
High fire safety rating
Water repellent properties
#TOP 9

Knauf Earthwool Loft Insulation Rolls 200mm

Knauf Earthwool Loft Insulation Rolls 200mm Cover
EARTHWOOL 4 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 27.36m2 Area Covered Deliveries to Mainland UK ONLY

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.

What We Like
Lightweight and easy to handle
Flexible for various applications
Covers significant area
Economical insulation solution
#TOP 10

Knauf Earthwool 3 x Insulation Loft Rolls

Knauf Earthwool 3 x Insulation Loft Rolls Cover
EARTHWOOL 3 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 20.52m2 Area Covered Deliveries to Mainland UK ONLY

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.

What We Like
Excellent thermal performance
Lightweight and easy to handle
Flexible installation options
Covers large area
Buying Guide Image

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.

Editor's Notes

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.

Written by
Corey Phillips Avatar

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.