When designing and building a Tiny House, a lot of thought usually goes into choices such as insulation, layout, and minimizing energy use. By the time you reach the interior stage, you’ve already made countless decisions. And then there are still choices to make about kitchen handles, lighting positions, and more. But have you also thought about how you want to finish the walls of your Tiny House? If you want to make sustainable choices there as well, you actually have more options than you might expect.
Choosing a natural wall finish is not only about aesthetics, but also about creating a healthier indoor climate and reducing environmental impact. Natural materials generally do not contain harmful substances (such as volatile organic compounds or solvents), which helps maintain better air quality indoors. That is especially important in a small home where you spend a lot of time. In addition, many of these materials work well with breathable construction methods, meaning they can absorb and release moisture. This helps prevent mold and contributes to a comfortable living environment.
There are also some points to consider. Natural wall finishes can be more expensive and are often more labor-intensive to apply. Not everyone has the time or inclination for that. Fortunately, you can outsource part of the work to a professional. For example, you can have a wall plastered first and then paint it yourself if you like.
Loam plaster and loam paint
Loam is one of the most popular natural wall finishes in ecological housing. Loam plaster has a warm, matte appearance and creates a calm, natural atmosphere. It also regulates humidity and has some insulating and sound-dampening properties.
A downside is that loam plaster can be quite labor-intensive to apply. The surface often needs to be prepared carefully, sometimes in multiple steps, to prevent cracking. This is also why loam plaster is not ideal for homes that move — such as Tiny Houses on wheels. In those cases, loam paint is often a better alternative. It is easier to apply and retains much of the look of loam, but with a lower risk of cracking.
Ecological paint and (visible) wood
A more accessible option is ecological paint. These paints contain little to no harmful substances and are available in a wide range of colors. Do pay attention to coverage and composition, as “eco” is not a regulated term. If you need three coats to get proper coverage, that’s extra work to factor in.
In the photos: wooden walls with a whitewash finish in the Tiny House of Renske Holwerda, TinySinneblom in Gorredijk
In many Tiny Houses, wood is left visible. Wood already has a warm and natural look. By finishing it with a natural oil or lacquer, you protect it from dirt and sunlight. You can also choose a lightly tinted finish, such as whitewash, to subtly influence the color while preserving the character of the material.
The advantage of these options is that they are relatively easy to apply. A drawback is that some products can still be quite expensive, and it takes some research to ensure they are truly sustainable and non-toxic.
Lime plaster and tadelakt
Lime plaster is a natural, breathable material made from lime, with a lively, cloud-like appearance. It is vapor-permeable and naturally mold-resistant, making it suitable for damp areas. It is also somewhat more resistant to damage than clay plaster.
Photo: a Moroccan tadelakt bathroom
A special variant is tadelakt, a traditional Moroccan technique based on lime. Tadelakt is water-resistant and therefore very suitable for bathrooms. It creates a luxurious, almost polished look without the need for tiles.
The downside is that both lime plaster and tadelakt are specialist techniques. Tadelakt in particular is labor-intensive and usually applied by professionals, which makes it a more expensive option.
Cork, bamboo and wooden panels
For those who prefer working with panels, cork, bamboo and wood are interesting choices. These materials are renewable and provide a warm, natural appearance. Do pay attention to responsible sourcing, for example wood with an FSC certification.
Cork has excellent sound-dampening and insulating properties. Bamboo grows quickly and is often seen as a sustainable alternative to wood. Wooden panels come in many styles, colors and patterns and are relatively easy to install.
The origin of the material and the number of transport miles are also worth considering when choosing your wall finish. Additionally, pay attention to how these materials are treated: not all adhesives and coatings are environmentally friendly.
Sustainable wallpaper
Wallpaper can also be a sustainable choice, provided you select options made from recycled or natural materials and printed with environmentally friendly inks. For example, paper wallpaper without a plastic coating, or wallpaper made from grass fibers.
Wallpapering can be done yourself (possibly with help from a more experienced friend or family member), and it offers a wide range of colors and patterns. However, it is not very moisture-regulating, which makes it less suitable for damp spaces.
Final thoughts
If you thought clay plaster or white ecological paint were your only options for sustainable wall finishing in a Tiny House, there are actually many more possibilities. The right choice largely depends on your taste and your budget.
And about that budget: if a tadelakt bathroom isn’t feasible right now, you can always treat it as a future project and start saving for it. The same goes for cork walls. For now, you might choose a calm, natural shade of ecological paint — and there’s absolutely nothing wrong with that.
If you do have the budget, go for it. It’s something you’ll enjoy every day for years to come — and that’s worth a lot.
Images materials: Depositphoto’s.com
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