Pisé is a self-renewing and self-repairing material — provided someone is there to maintain it. The outer layer of a kasbah wall needs re-rendering with a fresh application of mud-and-lime wash every 10 to 30 years. Without this maintenance, seasonal rains dissolve the unprotected surface in a process visible in the successive erosion terraces that stripe the walls of neglected structures. Within a human lifetime, an unattended kasbah can collapse to a formless mound.
The primary threat is not climate, but depopulation. Across southern Morocco, economic migration to Casablanca, Marrakech, and Europe has hollowed out the rural communities whose daily presence — sweeping rooftops, patching walls, maintaining irrigation channels — was the kasbah's natural conservation system. When the last family leaves a ksar, the structure typically survives no more than two or three generations of rainfall before returning to the landscape.
High-profile sites receive institutional support. UNESCO and the World Monuments Fund have invested in Ait Benhaddou, Kasbah Taourirt, and the Kasbah des Oudayas in Rabat. The Moroccan Ministry of Culture administers a national heritage fund for listed structures. But Morocco has thousands of ksour and kasbahs scattered across the pre-Saharan south, the vast majority receiving no conservation funding whatsoever.
Tourism presents a paradox. Visitor revenue funds guides, guesthouses, and artisans who stay in kasbah communities rather than migrating. Sites like Ait Benhaddou and Ksar Tamnougalt retain resident families partly because tourism makes subsistence in the ancestral home economically possible. But overtourism concentrates wear on the most fragile structures — the mud steps of Ait Benhaddou's upper path were visibly eroding under visitor pressure until a restoration project in 2019 relaid them in traditional materials.
The most sustainable approach for visitors is to distribute their time and spending across a wider range of sites, to hire local guides from within the communities they visit, and to stay in converted kasbahs whose revenue returns directly to maintenance budgets. Avoiding touching or sitting on unrestored pisé walls — however tempting — is a practical act of conservation that costs nothing.