Well it really depends, what type of plaster, building design and how well it is installed.
A good lime plaster will last 100 years without maintenance, whereas a clay plaster may only go 5-10 until another coat is needed.
The home itself should last 1000 years or more. The oldest home in the US is adobe and was built around 1200.
posted 5 years ago
Your reply is music to my ears.
I was planning on the lime plaster, just need to find a good recipe now.
Before I begin on the house I am going to build a garden wall to get a better feel for handling the materials/plaster.
I'm fortunate to have a quarry a few blocks down the road that has an unlimited supply of scoria in all shapes and sizes at $60 a truck load.
Ideally I wanted to build with Hemp/Lime but the cost was too high, and the labor too intensive (I'm a 58 year old female). While researching the hemp house I found lots of references to Roman Concrete, and the idea stuck in my mind that if I filled the bags with Scoria/Pozzolan/Lime/Hemp Hurds, and then plastered the bags with a lime based plaster the result would be the bags may 'fossilize' over time?
Plans are starting to come into focus now, and it's getting very exciting...