The varnish aisle in most DIY shops is full of petrochemical heavy products containing strong solvents, and plastic resins. They promise a durable finish, but they release VOC laden fumes into your home for weeks or even months after application.
Many homeowners are looking for eco alternatives that are kind to the air quality in their home, and the environment. Non toxic and natural wood varnishes are now widely available, and their performance is comparable with the chemical laden alternatives.
This guide looks at the safer, more breathable alternatives and what to expect when choosing a natural varnish for your home.
Why Choose a Natural & Non Toxic Wood Varnish?
Natural & non toxic wood varnishes are safer and more pleasant to use, and often provide a more effective finish than their petrochemical based counterparts.
Varnishes “off gas” into your home long after application, which can cause respiratory issues and headaches. Many natural varnishes are breathable, which allows the wood to move and reduces issues with cracking and flaking. In many cases, natural varnishes are more durable.
An eco friendly wood varnish is typically:-
- Low in VOCs or VOC Free.
- Made with plant based or naturally derived ingredients.
- Much gentler on indoor air quality.
- Breathable, reducing cracking and flaking.
- Enhance the natural look of wood, creating a richer and more vibrant finish.
For families with young children, pets or anyone with sensitivities, choosing a non toxic varnish can make a big difference to how the home feels, not just visually but physically.
See Also: Safe paint for pets | Safe paint for babies and children
Types of Eco Friendly Wood Varnish
Our own range offers two distinct types of eco friendly wood varnish, water based varnish and traditional varnish made from plant based oils.
Water Based Natural Varnishes
Water based natural varnishes use plant based binding agents instead of petrochemical solvents. They are very low odour during application, dry quickly, and are safe for indoor use.
Despite appearing milky in the tin, they dry to a completely clear, transparent finish. This type of non toxic varnish is ideal for furniture, doors, shelves, cupboards and other interior wood where a durable and safe finish is needed.
Traditional Natural Oil Varnish
If you are interested in a heritage style approach, our traditional oil based varnish is highly effective and creates an authentic finish. Made from cold pressed linseed oil - it penetrates into the wood rather than sitting entirely on the surface.
Natural oil based varnishes dry much more slowly than water based products, but they remain beautifully elastic and breathable. This makes them especially suited to solid wood and older pieces that benefit from a more traditional, flexible finish.
The result is usually a subtle sheen and a gentle warm tone that enhances the character of the timber.
All clear varnishes will subtly influence the colour of the wood. Most produce a gentle honey or golden tint. If maintaining a very pale finish is important, it is always worth testing on an offcut or hidden area first.
Our Recommended Natural Wood Varnishes
We have very high standards for the varnishes we stock, here’s our best natural wood varnish products:-
AURO Clear Lacquer Matt No. 518
Auro 518 is a water based, solvent free non toxic clear varnish designed for interior use on wood and wood based materials.
It is made using AURO’s plant based Decovery® binder and carefully selected natural ingredients. It has been tested as safe for toys and is resistant to saliva and perspiration, making it highly suitable for family homes.
AURO Clear Lacquer Glossy No. 515
Auro 515 offers the same eco and health credentials as the matt version, but with a glossy finish for those who prefer a more traditional varnished look.
This natural wood varnish is ideal for furniture, interior doors and timber features where a more reflective finish is desired without relying on synthetic chemicals.
AURO Linseed Oil Varnish No. 143
Auro 143 is a traditional natural wood varnish made from cold pressed linseed oil. Rather than forming a hard surface layer, it soaks deeply into the wood, offering protection while remaining elastic and breathable.
It has a slow drying time, which is typical of traditional oil finishes, but once cured it provides very durable, water resistant protection. It leaves a slightly glossy finish and a warm, honeyed tone on the timber.
It is particularly well suited to heritage projects, solid wood furniture and anyone looking for an authentic, plant based alternative to conventional varnish.
Because it is a drying oil, good ventilation is important during application and any cloths used should be allowed to dry flat or stored safely to avoid the risk of spontaneous ignition.
Caring for Naturally Varnished Wood
A naturally varnished surface is easy to live with. Regular dusting and gentle wiping with a lightly damp cloth is usually enough to keep it clean. Harsh chemicals, abrasive sponges and microfibre cloths are best avoided. A gentle natural cleaner should be used if needed.
Over time, wear and tear can simply be refreshed with a light sand and another thin coat, rather than stripping everything back. This is one of the most appealing benefits of using a natural, breathable varnish in the first place.
Common Questions About Non Toxic Wood Varnish
Is natural wood varnish really durable enough for everyday use?
Yes, natural wood varnish is incredibly strong. When applied correctly, they are durable and suitable for furniture, doors and interior woodwork.
Is non toxic varnish safe for babies and pets?
Many natural varnishes, including those listed here, are tested as safe for toys and are extremely low in VOCs, making them suitable for family homes once fully cured.
Can you use eco-friendly varnish in a kitchen or bathroom?
Yes, for cabinets and interior woodwork. These natural varnishes offer protection against moisture while remaining breathable.
What is the difference between oil based and water based natural varnish?
Water based varnish dries faster, is almost odourless and creates a clear film. Oil-based varnish penetrates deeply, dries slowly and leaves a warmer tone.
The Healthier Way to Finish Interior Wood
Protecting timber does not have to come at the cost of your health or the environment. With the right eco-friendly wood varnish, you can achieve a beautiful, durable finish while keeping your home’s air cleaner.
If you are unsure which type of non toxic wood varnish is best for your surface, please contact us for friendly, expert advice on your next project. We’re here to help!
