Plumbers in Pasadena, CA

A city of hundred-year-old pipework

Pasadena’s Craftsman and period revival housing is one of the best collections of its kind anywhere, and behind the walls it comes with pipework from the same era.

The recurring complaint is not a leak. It is that the showers have been getting weaker for years, that running a tap in one place kills the flow somewhere else, and that no plumber has found anything wrong.

That is galvanised steel supply pipe reaching the end of a very long life. It corrodes from the inside, and the corrosion builds as a thickening rough layer that gradually closes the bore. An original half-inch pipe ends up passing a fraction of what it should.

From outside it looks entirely sound, which is exactly why nothing is found. And there is no repair, because nothing is broken. Replacing the affected runs is what restores flow, and in a large old house it is usually staged, one area at a time, which spreads both cost and disruption.

Clay joints and old trees

The same houses generally have vitrified clay sewer laterals, and clay came in short lengths, which means a joint every few feet along the whole run.

Above them are oaks and sycamores planted around the same time.

Roots do not break into sound pipe. They find a joint that a century of ground movement has opened slightly, detect the moisture escaping, and grow through. An established tree over an old clay lateral has dozens of opportunities.

Cutting them restores flow the same day and leaves every opening exactly as it was, which is why the same section fills again a season or two later.

Lining the run is what ends it. A cured liner is continuous from end to end, with no joints left to enter through, and it is generally less disruptive than replacement on a mature property with planting worth keeping.

Historic districts change the technical answer

This is the Pasadena-specific consideration that catches people out, and it belongs at the start of a job rather than the middle.

A significant number of properties here sit within landmark or historic districts where exterior alterations are reviewed. Interior plumbing is generally unaffected, but anything visible from outside may not be.

In practice that means the placement of an outdoor tankless unit and its venting, any new external pipe run, and visible changes to a street elevation are all worth checking before they are designed rather than after.

Sometimes it changes the right answer. Equipment that would conventionally go on an exterior wall may be better located internally, which affects venting, condensate and cost. None of that is a problem if it is known at the quoting stage. It is an expensive surprise if it is not.

Winter, in a foothill city

Pasadena sits on alluvial ground at the base of the San Gabriels, and the drainage question here is about what comes down off the slopes rather than what rises from below.

Heavy winter rain moves a great deal of material, and the systems that are supposed to handle it, gutters, downpipes, area drains and yard drains, spend the rest of the year filling with leaves and sediment.

So the useful pre-winter check is simply whether they run. Clear the gutters, confirm downpipes discharge away from the building rather than alongside the foundation, and check that area drains actually take water rather than merely existing.

On properties closer to the foothills it is worth doing before the first serious storm of the season rather than after it.