5 Ways to Create a Natural Floor

It’s been natural floor month in the Mud Home Facebook Group, with a number of members attacking their substrates and creating natural beauty by the spade-load. As luck would have it, all of them have chosen different flooring methods, which not only gives me fodder for a great post, but is filling my noodle with ideas. Because it’s just about floor time for my little stone cabanas in Spain. So which one of these five will I choose?

1. Earthen floor

Kim Fraser's hobbit house in Moray, built by Hartwyn Natural Building

Here’s a floor to salivate over if ever I saw one. Earthen floors can be absolutely stunning, though they require some know-how. As with most floors, earthen floors are usually laid upon compressed gravel or foam glass beds. Foam glass is popular because it adds insulation too. There is some disagreement as to whether a vapour membrane is necessary to stop moisture wicking up into the floor. If you’re in a dry climate, or with a house that’s high up a slope with plenty of drainage, you may well get away without one, if not probably best to hedge your bets. For the record Kim’s gorgeous floor (shown above) in her hobbit house in Scotland  didn’t require one, and it was built to code*.

Earthen floors are basically a clay, sand and straw mixture poured, trowelled and left to dry. After this they are coated a few times in an oil (most commonly linseed). Kim’s floor above has also been polished with beeswax.

If you are serious about making an earthen floor (they're actually very doable, and not as hard as people expect if you know the fundamentals), then you might want to grab my PDF on How to Make an Earthen Floor.

​Pros: You can create gorgeous looks with an earthen floor. They work super well with underfloor heating. If insulation is used, they are very snug.
Cons: Earthen floors are super durable of made correctly and can handle normal liquid spillages, but they are not suitable for areas which become very wet (such as a bathroom). Use limecrete in those areas.

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2. Limecrete

Esra adding a limecrete step in The Mud Home

For folk needing something more durable, limecrete is used all over the world as a flooring option (much like concrete). When restoring ancient homes in the UK, limecrete floors are pretty much always installed, because they are both breathable and can handle some damp.
 
Again limecrete floors are laid on compressed beds of loose aggregate. If you're serious about a limecrete floor you may wish to invest in my Amazing World of Lime Course

Which kind of lime should you use for floors? If you’re new to lime you’ll want to check out the Mud Home guide to various lime types. For flooring, many tradespeople prefer NHL type limes because they are more cementitious, and set harder. There are plenty of diehards who use pure lime putty too, though.
 
In some countries like the UK and Australia, ready-made limecrete slabs are also available.
 
Pros: Limecrete breathes. Lime is a natural fungicide and insecticide too, so it’s great for wet climates.
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Cons: Lime is trickier to work with than stones, bricks or wood. You need to get your mixture right, and allow it to cure slowly but thoroughly.

Don't forget lime is caustic. Read the Mud Home guide to using lime safely here.
 
3. Simple gravel bed with stones/bricks

My first attempt around the water trough.

I’m becoming a bit of a fan of this method. For outside spaces it’s a no-brainer. So easy. So low-impact. And you can create some very aesthetic results with gravel and slabs too.
 
All you have to do is throw down a bed of gravel or sand and then inlay bricks or slabs or stones into the gravel bed. Once you’ve achieved the pattern you love, fill in the gaps around the stones by throwing more gravel or sand over the top and brushing it into the gaps. This stops your bricks/stones from shifting around and wobbling.
 
Pros: Much more stable than you’d expect. Superb for drainage as it’s completely unsealed and any water simply seeps away. Easy and cheap to make.
 
Cons: Because it’s not sealed you may find grains of sand working their way out. I’m happy to sweep the floor every now and again, but clean freaks may not be. You’ll probably need to refill the sand in the gaps every year or so.
 
Learn more about laying a brick floor here:
http://highstreetmarket.blogspot.com/2012/06/diy-antique-brick-pathway.html
 
For more inspiration look on my Pinterest page: UP THE GARDEN PATH
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Here's a video showing the process: https://youtube.com/shorts/Agr2jfBpbgA?si=Rc14B6XZ6ubJKivd

Traditional brick floors laid into sand look amazing.

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Juniper floor in The Mud Home, Turkey.

4. Wooden Flooring

I love a wooden floor. Always have, always will. They smell and feel so good. No gravel bed needed with a wooden floor. Usually (at ground level) wooden floors are raised slightly off the ground to prevent damp rotting them. They’re actually pretty easy to make, even for newbie builders (I made mine in our roundhouse in Turkey with Celal, and although it wasn’t perfect, I loved it).
 
Pros: Warm on the feet, nice on the eyes, and they smell good too. Wood floors are very hard-wearing, give you a perfectly flat platform, and are relatively easy to make.
 
Cons: Not particularly sustainable in most cases (timber isn’t unless it’s reclaimed). Wood is also notoriously expensive, and will usually result in the greatest outlay in your build.

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​5. Breathable tiles with lime mortar

Emma Winfield’s perfect quarry tile floor.

Emma Winfield in our FB group created this gorgeous floor using buff-coloured quarry tiles laid into a lime mortar, laid upon a limecrete slab. The result, as you can see, is very professional. Again, if you're going the lime route you may want to take a look at The Amazing World of Lime.

Pros: Very slick finish and even suitable for mainstream homes (or restoration projects).
 
Cons: You need to get your lime mortar mixture and application method right, otherwise the tiles may not stick.
 
Which Natural Floor Will I Choose?

Which floor for this one then?

​I love to experiment, and it’s lucky I have three cabanas. Because I shall be using the gravel bed with stone slabs or bricks in one, an earthen floor in another, and probably wood in the big one. But hey, you know me. Time will tell. :)
 
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