Common Plumbing Problems in Old Buildings

Old buildings have a charm that new construction rarely matches, and Palma's historic centre is a good example of that. But behind stone façades and centuries-old courtyards there's usually a plumbing system that has, quite literally, been building up layers of history for decades. Knowing the most common problems in these installations helps you get ahead of them before they turn into a serious breakdown.

One of the most distinctive features is the variety of materials coexisting within the same system. In buildings with many years behind them, it's common to find sections built with materials no longer installed today, such as lead in very old service connections, galvanised iron in sections that corrode over time, or fibre cement in some drainage runs from the mid-twentieth century. This isn't meant to raise alarm: many of these sections have worked without incident for decades, but it is worth having a professional identify them and assess their condition, because older materials behave differently from current ones and their working life, sooner or later, comes to an end.

Another very common problem is a reduction in internal pipe diameter due to scale build-up. Over the years, water deposits limescale and sediment on the inner walls of the pipe, a process that's more pronounced in areas with harder water. That gradual narrowing reduces the available flow, causes lower pressure on the upper floors of a building, and makes the system far more prone to blockages, even under normal use.

Cracked joints and connections are another classic feature of old installations. Every joint between pipe sections, especially where different materials have been combined across various renovations, is a potential leak point. Over the years, the original seals degrade, the material expands and contracts with temperature changes, and micro-cracks appear that often go undetected until they've already caused damp patches on a wall or the floor below.

In buildings with courtyards, gardens or nearby trees, root intrusion into drainage pipes is a recurring problem. Roots seek out water and nutrients, and a pipe with a slightly open joint or a hairline crack is a perfect way in. Once inside, the root keeps growing and eventually blocks the pipe partially or completely, a problem that usually needs specialised inspection to pinpoint accurately.

Finally, there's the cumulative effect of decades of partial renovations. It's common for an old building to have gone through several interventions over its life, each following the materials and standards of its time, without an overall view of the whole system. The result is mixed systems, with sections from different eras connected together, diameters that change for no apparent reason, and improvised fixes that, while functional, aren't always the most efficient or safest way to handle the system as a whole.

At Tuberías y Aljibes we regularly work in Palma's old town and in historic country properties across the island, and we know that every old building tells its own story through its pipework. A professional inspection, with CCTV where necessary, makes it possible to genuinely understand the condition of the system before a breakdown occurs, and to plan interventions with proper judgement instead of reacting to one problem at a time.