Natural fibre insulation is an effective and sustainable solution for improving the thermal comfort and energy efficiency of buildings. Made from materials such as hemp, wool, jute, wood fibre, and cellulose, these insulations offer exceptional thermal performance while maintaining breathability. These natural materials help regulate indoor temperatures, keeping homes warm in winter and cool in summer - perfect for year-round comfort.
Providing excellent thermal regulation, natural fibre insulation helps maintain a higher surface temperature to reduce condensation, thereby reducing the risk of damp and mould growth, which can lead to structural damage and a negative impact on indoor air quality. These materials also excel in soundproofing, ensuring that your home or building is quieter and more peaceful.
Natural fibre insulation options include flexible mats and blown-in options, suitable for insulating walls, roofs, floors, and lofts. Whether for new builds, renovations, or retrofitting projects, these products are sustainable and long-lasting, offering long-term environmental benefits. EPD certified, they are an excellent choice for those aiming to reduce their carbon footprint and create a sustainable, energy-efficient home.
Natural fibre insulation not only boosts thermal comfort and reduces energy consumption but also contributes to a healthier indoor environment, enhancing both energy efficiency and sustainability.
About Natural Insulation
Natural fibre insulation is made from sustainable materials such as hemp, wool, jute, wood fibre, grass and cellulose, offering outstanding thermal and acoustic insulation. These materials are highly breathable and hygroscopic, to help reduce the risk of moisture buildup and mould. By maintaining temperature stability and keeping interiors warm during the winter and cool in the summer, natural fibre insulation enhances indoor comfort and energy efficiency.
Natural insulation materials excel at soundproofing, making them ideal for noisy environments or areas requiring enhanced acoustic performance. Unlike synthetic alternatives, natural fibre insulation is free from harmful chemicals, improving indoor air quality and creating a healthier living environment.
Natural fibre insulation is not only a high-performance, eco-friendly solution but is also sourced from renewable resources. The EPD certification, granted after completing independent third-party assessments, supports users to make informed product choices, contributing to sustainable building practices.

Natural fibre insulation provides excellent thermal and acoustic performance, creating more comfortable and energy-efficient living spaces. Made from eco-friendly materials such as hemp, wool, wood fibre, grass and cellulose, it regulates temperature effectively and prevents moisture buildup and mould. Its hygroscopic nature and breathability reduce the risk of condensation, contributing to a healthier indoor environment. With no harmful chemicals, it promotes better air quality and is safer to handle, promoting healthy indoor environments while improving the overall sustainability of buildings.
Key Benefits
Breathable Materials
Breathable materials regulate humidity to help reduce the risk of condensation and mould
Thermal performance
Thermal performance that keeps buildings warm in winter and cool in summer
Soundproofing
Soundproofing properties for improved acoustic comfort and reduced noise
Natural, Sustainable Materials
Made from natural, sustainable materials such as hemp, wool, wood fibre, grass and cellulose
Toxin Free
Free from toxins and synthetic chemicals, improving air quality
Sustainable
Eco-friendly and reusable, contributing to sustainable construction and reducing waste

IndiBreathe Flex Hemp and Jute insulation
IndiBreathe Flex Hemp and Jute insulation combines the natural benefits of hemp and jute fibres to offer a flexible, eco-friendly insulation solution. This material excels in both thermal and acoustic insulation, providing excellent breathability and humidity regulation. It helps maintain a stable indoor climate by reducing temperature fluctuations, keeping spaces warm in the winter and cool in the summer.
As a flexible insulation, IndiBreathe Flex makes it easier to fully fill the spaces between joists and rafters, offering better performance than rigid insulation boards in these applications. Hygroscopic natural fibres help absorb excess humidity, reducing the risk of interstitial condensation and reducing the risk of dampness and mould, making it perfect for eco-friendly, energy-efficient homes. Its renewable nature makes it an ideal choice for sustainable construction projects.

Indibreathe Flex natural flexible insulation made from UK grown hemp and recycled jute fibres






Gutex Thermoflex Wood Fibre
Gutex Thermoflex Wood Fibre is a versatile, eco-friendly insulation material made from wood fibres which would otherwise go to waste. It provides outstanding thermal performance while ensuring breathability to maintain a comfortable indoor environment. Thermoflex helps prevent heat loss during the winter and keeps spaces cool during the summer, maintaining surface temperatures and preventing condensation and mould growth, as well as offering excellent soundproofing.
Biodegradable and made from reused waste wood chips, Thermoflex supports sustainable building practices while enhancing thermal and acoustic performance.

Gutex Thermoflex flexible wood fibre insulation mat






Cosywool Sheep’s Wool
Cosywool Sheep’s Wool is a highly effective insulation material made from natural sheep wool. It excels at regulating temperature, keeping buildings warm in winter and cool in summer for consistent comfort. As a breathable natural fibre, it allows moisture vapour to be absorbed and released, reducing condensation and mould risk. Free from harmful chemicals, Cosywool improves air quality and provides a healthier indoor environment, making it an environmentally responsible choice for sustainable construction.
Sheep's wool is naturally flame-retardant, adding an extra layer of safety. Free from harmful chemicals, Cosywool improves air quality and provides a healthier indoor environment, making it an environmentally responsible choice for sustainable construction.

Thermafleece CosyWool natural sheep's wool insulation





Gramitherm Sustainable Grass Insulation
Gramitherm Grass insulation offers a natural and sustainable solution made from grass fibres. It provides excellent thermal and acoustic insulation, reducing temperature fluctuations within buildings. This breathable material helps prevent moisture accumulation by absorbing excess humidity, minimizing the risk of mould.
Gramitherm Grass is resistant to pests and mould, ensuring a healthier living environment. Made from renewable resources, it is made from upcycled waste materials and recycled jute, making it an eco-friendly choice for sustainable building projects focused on environmental responsibility.

Gramitherm Sustainable Grass Insulation natural insulation made from grass and recycled jute fibres



Gutex Thermofibre
Made from re-used waste wood chips, Gutex Thermofibre offers excellent thermal insulation and soundproofing properties. This breathable material absorbs excess humidity to help prevent condensation buildup, which can lead to mould growth. Thermofibre stabilises indoor temperatures, keeping buildings warm in winter and cool in summer.
It is particularly well-suited for timber frame walls and roofs. As an eco-friendly product, Thermofibre is biodegradable, recyclable, and made from renewable resources, supporting sustainable and environmentally conscious building practices.

Gutex Thermofibre blown-in wood fibre insulation


