There you have it. That's what happens. If you take a closer look at the photo though, you can see clearly what the issue is with Portland cement. It holds onto water like a sponge; an unbreathable sponge at that. Notice how the concrete render is cracking in a grid. Those cracks are occurring at the joins between bricks which are filled with concrete mortar. The mortar has retained the moisture, which has then seeped into the concrete render, and ultimately destroyed it. This knowledge is crucial if you're thinking of repairing an old stone wall, rendering a traditional building, or maintaining a natural home. As Period Living says, "Sadly, the wrong techniques and materials are all too frequently used for repairs so moisture is sealed in, resulting in damage and decay, often with disastrous consequences to walls and floors." So what should you use instead? Lime plaster and cretes, clay plasters and mud mortars are the way to go. Here's a useful article on the subject. Have you restored an old natural home? Do share your tales and your tips. Do you enjoy The Mud Home?
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There are so many examples of natural homes around the world. In the UK it seems every step you take, another earth gem rears out from a village street. Each inspires in a different way. Here's one from my home town of Wivenhoe. For those who doubt the longevity of mud, the Garrison House dates back to the 17th century. It's a wattle and daub masterpiece, especially the pargetting in the earth plaster along the front. The wall has been coated many times over the centuries in lime wash, creating a thick, breathable shell which protects the plaster. Even the drainpipe has stood the test of time and is inscribed with the date 1678. You can find more about the Garrison House from the Wivenhoe History website. Do you enjoy The Mud Home?
If you find these articles inspiring or useful please consider joining us on Patreon. Your support pays for the running of this website, my virtual help, and my sustenance. A big thank you to all The Mud Sustainers, and everyone chipping in and keeping these posts and articles coming. |
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