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Celtic Sustainables home of natural paints, natural fibre insulation and lime.
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We love hearing from satisfied customers who have tried our eco-sustainable products. Positive feedback makes all the effort, time, and research in finding ethical products worthwhile. Your feedback motivates us to continue providing eco-friendly products that meet our high standards. Thank you for sharing your experiences with us! 

Read our Company and Product Reviews on

Here are the top 10 tried-and-true products that have consistently delivered excellent results year after year.


Our customers top ten rated products

Thermafleece - Cosywool Sheeps Wool Insulation

Top Rated #1 - Thermafleece - Cosywool Sheeps Wool Insulation

Thermafleece Cosywool is a popular insulation choice with over 300 5* reviews from satisfied customers. It is a lightweight and cost-effective option, making it ideal for new build and renovation projects. If you're looking for an insulation solution that delivers on both performance and affordability, Thermafleece Cosywool is definitely worth considering; remember to check out our new sizes that are available in 150mm thickness and 370/570mm width. 

Cosywool Insulation
Earthborn claypaint

Top Rated  #2 - Earthborn - Claypaint

It's the first product we started selling way back in 2011! Claypaint has consistently delivered great results. Customers love the Claypaint's exceptional coverage and ultra matt finish; it's also super easy to use (no smells!). We mix in-house and always have it readily available. The highly breathable paint makes it ideal for lime plaster; it can also be painted on furniture! It's the perfect choice for people with allergies or asthma. 

Thermafleece - SupaSoft Polyester Insulation

Top Rated #3 - Thermafleece - SupaSoft Polyester Insulation

The Supasoft insulation is an excellent alternative to conventional insulation, providing itch-free comfort and a vegan-friendly option. What our customers say;

Sophie J  Verified Reviewer: “Great stuff, works well, easy to fit and super light, the room is now lovely and warm and good to know I’m reusing plastic bottles to keep warm!


Top Rated #4 - Baavet - Wool Duvets

Baavet produces wool bedding in Wales using 100% British wool. Their products are breathable and hypo-allergenic. They are ideal for people who get warm at night or asthma sufferers. Did we mention that it's made in Britain, with British wool?

Wool Duvets
Keim optil

Top Rated #5 - Keim - Optil Interior Silicate Paint

Optil Paint customer feedback, Verified Reviewer Sally D;

“The best paint I’ve ever used. Creamy to apply and a lovely soft matt finish - we have walls of gypsum plaster and lime plasters, which look great on both. Sample pots match the colour chart perfectly and are much larger than other paint manufacturers’, so enough to test in different areas to see the effect of light. 

.... It tells you everything you need to know, really! 

Home Strip - Paint & Varnish Remover

Top Rated #6 - Home Strip - Paint & Varnish Remover

A non-hazardous paint stripper and varnish remover is completely water-based and solvent-free. It is ideal for DIY enthusiasts and has widely been used by professionals. Safe to use by people with respiratory problems such as asthma and safe to use around pets. Vegan and cruelty free too!

Home Strip - Paint & Varnish Remover customer feedback;

Verified Customer Helen B: "A great product; it has easily removed layers of gloss paint from a wooden bannister. No fumes, no fuss."

Home Strip - Paint & Varnish Remover
Graphenstone - GCS Exterior Heritage Silicate Masonry Paint

Top Rated #7 - 

Graphenstone - GCS Exterior Heritage Silicate Masonry Paint

Graphenstone's GCS Exterior wall paint combines lime, silicate and natural minerals to create beautiful matt paint. Suitable for interior and exterior, a little goes a long way with the GCS, one of the best paints for coverage. We'd recommend using the L42 primer, too; it equalises and stabilises the surfaces whilst maintaining very high levels of breathability.

GCS Exterior
Official UK Auro stockist and online seller. We have a huge range in stock and available to ship today.

Top Rated #8 - Auro 524 White Premium Washable Emulsion

Auro has a wide range of environmentally friendly decorating products produced using 99% natural raw materials from sustainably managed sources. 524 emulsion is most popular with our customers who want durability and breathability, and the economy emulsion 321 if you want a cheaper alternative. Auro is naturally non-toxic, cruelty-free and odourless. It's easy to see why Auro 524 white emulsion has been a customer favourite for many years! 

Auro 524
Earthborn - Silicate Masonry Paint

Top Rated #9 - Earthborn - Silicate Masonry Paint

The Silicate Masonry Paint from Earthborn is a highly durable and breathable paint alternative to traditional lime-based or conventional masonry paints. It's part of a system, so remember to use the primer. 

Verified Customer - Lukasz P, Bristol, United Kingdom

"Easy application keeps the wall dry and lasts a long time; after a few years, no pealing or problems."

Silicate paints
Caframo - Ecofan 812 Airmax Wood-Stove-Fan

Top Rated #10 - Caframo  - Ecofan 812 Airmax Wood-Stove-Fan

Heat-powered fans are designed to circulate the warm air created by a wood or multifuel stove. Help heat the room more quickly and efficiently. 

- No operating costs

- Cuts fuel costs

- Increases your thermal comfort

- Safe & Very quiet

- Perfect gift for someone special

Verified Customer - Toby B, United Kingdom

"Excellent fan, very fast start-up, and slow shutdown. Superb build quality, with excellent warranty and aftersales backup based in the UK. Highly recommended."

Caframo - Ecofan
Applicants are invited to submit their sustainable building projects, products and initiatives into the 6th annual ASBP Awards, which are now open for free entry.

The ASBP Awards 2024 submission deadline has been extended by two weeks until Monday 30th October 2023. Submit your FREE entry in the sustainable building project, product and initiative categories.

It’s completely FREE to enter!

Shop our brands

Harvst Smart Greenhouses
Conscious Skincare
Who Gives a Crap
Eco Union
Eco Solutions
Algon organic

Take advantage of this: 

Get Your Orders Delivered On Time and Without Delay!

5% Discount on orders over £500 

PLUS FREE Shipping on orders over £100

(Excluding lime and insulation products)


Celtic Sustainables, Unit 9, Parc Teifi business Park,
Cardigan, Ceredigion, SA43 1EW

01239 777 009 
Copyright © 2023 Celtic Sustainables, All rights reserved.Celtic Sustainables