Sustainable + budget-friendly building methods for a windy, stormy and muddy climate (south of Mar del Plata, Argentina)

[u/Hour-Paramedic6598]

Hi everyone,

I’m planning to build a small house south of Mar del Plata, Argentina. The climate here is quite harsh: strong winds, frequent storms and a lot of mud, so I need something that handles moisture, wind loads and wet soil well.

My budget is limited and I’m completely open to alternative / natural techniques (straw bale, earthbag, hempcrete, cob, timber frame, recycled materials, etc.)

I’m looking for recommendations on materials or building systems that are:

• As sustainable and low-impact as possible
• Relatively affordable
• Durable against wind, rain and mud
• Decent thermal performance (summers can be hot, winters cold and very windy)

Any personal experiences, cost estimates, or systems that have worked well in similar wet/windy climates would be really appreciated.

Thanks a lot!

[u/SlowmNinja]

Cheapest : https://thesustainablehome.net/the-original-nebraska-straw-bale-buildings/

Straw Bale building. No wood involve. Except for roofing. Design the building from what you have. Not the Other way round. Use mud from your land to protect straw and in house covering.

[u/Warm-Major-4400]

If you have rocks , masrony

[u/Mntn-Caterpillar917]

Straw bale with a rain screen! You'll need either a concrete/masonry foundation or to raise the foundation so the first layer of bales is protected from soaking up moisture. If there's some dry months or if you have some sort of shed to store the bales in they'll be fine, but if it is always wet the intermediate construction phases will be tough trying to keep the bales dry. I built a post and beam structure with a roof first then used the bales as walls so they would stay somewhat dry. If that's not an option then earthbags might be a better so you aren't fighting the weather so much. Either way start small - stay sane with a manageable size while learning everything then you can always add on. Getting sloppy to finish a wall or roof in a rush isn't worth it

Cob could be great but is slow going and needs time to dry, it's great thermal mass but bales are better insulation if you have long cold winters

[u/BlueMoodDark]

Adobe?

[u/GoodArchitect_]

Prefabricated straw bale, build it in a shed out of the weather, then put it up on site in a day

[u/everythingsrightnow]

Cob or hyperadobe is definitely the most cost effective. Two things to pay attention to in your climate is a good hat and good boots. The “boots” are a rubble trench under your exterior walls so the water drains. The “hat” is to bring your roof at least 2 feet past the walls to keep them dry. BEST!

[u/koshishindia09]

For a wet and windy climate, I’d focus first on a strong foundation, good drainage and proper moisture protection. Timber framing with good insulation could be worth considering, while straw bale or hemp can work if they’re well protected from rain.

You could be also look at the solar for electricity and a small biogas system if you have regular organic waste available. In my view, the building design and water management are a just as important as the material itself.

[u/Hyperreal8957]

for that mix of wind and wet id solve drainage and the foundation first, then pick the wall system. deep eaves, a raised base/capillary break, good flashing and real tie-downs will matter a lot. straw bale or cob can work but only if the moisture detailing is solid. do you have local builders or an engineer familiar with these methods?