Eco-friendly, natural insulation is the kindest way to make your home more energy efficient. Less energy is typically used to manufacture eco insulation in the first place , which reduces their carbon footprint even further.

Although natural insulation is more frequently found in newer builds, it’s perfectly suitable for any type of building and can be fitted post-construction. As well as reducing the effect of a home on the environment, most eco-friendly insulation products are fire-resistant so can slow the spread of a house fire too.

Want to find out more? Let’s take a look at some of the leading natural and eco-friendly insulation offerings on the market.


Popular eco insulation options

Some of the most popular methods of eco-friendly insulation are treated sheep’s wool, which performs exceptionally well as an insulator and recycled plastic bottles that have been reformed into rolls of insulation.

Both methods of insulation are fantastic thermal insulators with sheep’s wool having the added bonus of being acoustic insulation as well.

Here are the top contenders.

SupaSoft Insulation Quilt

Supasoft Insulation roll.

SupaSoft Insulation Quilt is made from 90% recycled plastic bottles which are manufactured together in a roll-out quilt formation. Available in different thicknesses, it is resistant to vermin, insects, and mould growth.

Unlike traditional insulation materials like fiberglass, SupaSoft Insulation Quilt is non-irritant and safe to handle without the need for special protective clothing. This makes installation easier and safer for contractors and homeowners alike.

Available in different thicknesses, SupaSoft can be tailored to suit various insulation requirements, whether for residential, commercial, or industrial buildings. Its versatility makes it suitable for a wide range of construction projects.

Thermafleece CosyWool

Cosywool sheeps wool insulation roll.

Thermafleece CosyWool is a fantastic sheep’s wool insulation product which can achieve a sound reduction of up to 40 decibels. The product is tightly packed for delivery so it reduces the impact of product transportation by over half!

What’s more, its tightly packed design not only ensures efficient delivery but also significantly minimises the environmental impact associated with product transportation, making it a sustainable, eco insulation solution for various construction projects.

Thermafleece NatraHemp

Thermafleece NatraHemp is loft roll insulation made with the fast-growing, low-impact hemp crop. Ideal for locations where plant fibres are preferred, this natural insulation offers excellent thermal support as well as acoustic insulation thanks to a density of 28kg/m3.Thermafleece NatraHemp Insulation Slabs

This combination of environmental sustainability, thermal efficiency and acoustic performance positions NatraHemp as a versatile and eco-conscious, natural insulation option for various construction applications.


Final thoughts

Insulating your home with natural insulation it significantly reduces your carbon footprint by utilising renewable and sustainable materials like wool, hemp, or recycled fibres,  contributing to environmental preservation.

Additionally, natural insulation materials often boast superior thermal performance, effectively regulating indoor temperatures and reducing energy consumption for heating and cooling.

Last but not least, these eco insulation materials typically have minimal to no harmful chemicals, promoting healthier indoor air quality and creating a safer living environment for you and your family.

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C
Carol F.
Verified Buyer
5.0 star rating
25/03/25
Thermafleece Breather Membrane
Review by Carol F. on 25 Mar 2025 review stating Thermafleece Breather Membrane
Used it to hold Thermafleece roll under suspended floor. Easy to handle and didn’t tear
A
Annabel D.
Verified Buyer
5.0 star rating
01/12/24
Great product
Review by Annabel D. on 1 Dec 2024 review stating Great product
Easy to install. Soundproofing well so far and warmth has improved. Doesn't smell of sheep unless up very close
T
theoldrectum
As the November cold snap comes upon us, I am pleased to see the insulation has finally arrived! #thermafleece is #ecofriendly and #sustainable and great for old, cold houses! 🐑❄️ #insulation #wool #gradeiilisted #southdowns #savetheplanet
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B
battenandbeam
Our client this afternoon was feeling the cold in their office on the opposite side of this garage wall. We stripped out the shelving unit, removed the gyproc, removed the fibreglass insulation, installed new 70mm foil backed celotexinsulation and put everything back together 👍🏻 #battle #insulation #cold #draught #handyman #battenandbeam #handymanservices #celotex #cavity #timber #carpentry #hastings #rye
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W
wellsshepherdhuts
Our current Shepherd’s hut build is taking shape now, this one is for a customers garden - a garden retreat hut. Our huts are fully insulated with natural sheep wool insulation supplied by thermafleeceuk. Internally finish painted with farrowandball paint by brianleeming_ Whilst the external wriggly tin cladding is black with oak windows and double doors. #shepherdshut #shepherdhut #shepherdhutbuilders #shepherdhutmaker #gardenretreat #gardenroom #tinyhouse #naturalwool #sheepwool #sheepwoolinsulation #thermafleece #farrowandball #farrowandballpaint #bespoke #handcrafted #workshoplife #work
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Bob W.
Verified Buyer
5.0 star rating
19/12/23
Service v good. Delivery man
Review by Bob W. on 19 Dec 2023 review stating Service v good. Delivery man
Service v good.
Delivery man v.helpful
Difference in the comfort of my home, amazing
M
Matthew B.
Verified Buyer
5.0 star rating
06/08/23
Lovely to work with!
Review by Matthew B. on 6 Aug 2023 review stating Lovely to work with!
Used as insulation for my suspended timber floor. Cuts easily with scissors (big pair). It will arrive compacted and about half the thickness advertised but after a day it puffs out. Easy to work with, I tried bare handed and had no reaction. Also, it does NOT have a bad smell.
J
J H.
Verified Buyer
5.0 star rating
26/10/22
Ready for Winter
Review by J H. on 26 Oct 2022 review stating Ready for Winter
Delivered on time, inastalled in loft easily, and now warm and saving heating bills a little more. Brilliant product. Thankyou.
A
a.van.around.the.world
13/07/22
So after being knocked about a bit by covid we managed to get back to working on the van on the weekend, and made a start / carried on with the insulation. We decided on using sheeps wool after doing a lot of research.. We are using the CosyWool product by thermafleeceuk which we got from insulation_superstore We got 3 rolls of 100mm batting and 3 rolls of 75mm batting, with the idea being to put the thicker in panels where we have room and use the thinner one where we want to save space a little.. Sheeps wool itself has excellent sound dampening properties but of course we are layering it over the dodomatuk 6mm Super Liner which adds sound and heat insulation and that is layered over the DEADN sound deadening sheets. Basically this van should have excellent acoustics and hopefully keep us cool in summer and warm in winter 🤞🏻 #vanlife #vanconversion #vanlifeuk #vanconversionuk #vanconversionproject #vanrenovation #van #vanproject #campervan #campervanconversion #projectvanlife #vanlifediaries #livingvanlife #citroenrelayconversion #vanconversionsuk #sounddeadening #thermalinsulation #accoustic #insulation #sheepswool
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A
a.van.around.the.world
13/07/22
So after being knocked about a bit by covid we managed to get back to working on the van on the weekend, and made a start / carried on with the insulation. We decided on using sheeps wool after doing a lot of research.. We are using the CosyWool product by thermafleeceuk which we got from insulation_superstore We got 3 rolls of 100mm batting and 3 rolls of 75mm batting, with the idea being to put the thicker in panels where we have room and use the thinner one where we want to save space a little.. Sheeps wool itself has excellent sound dampening properties but of course we are layering it over the dodomatuk 6mm Super Liner which adds sound and heat insulation and that is layered over the DEADN sound deadening sheets. Basically this van should have excellent acoustics and hopefully keep us cool in summer and warm in winter 🤞🏻 #vanlife #vanconversion #vanlifeuk #vanconversionuk #vanconversionproject #vanrenovation #van #vanproject #campervan #campervanconversion #projectvanlife #vanlifediaries #livingvanlife #citroenrelayconversion #vanconversionsuk #sounddeadening #thermalinsulation #accoustic #insulation #sheepswool
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