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Water Damage in California's Older Homes

California has many older homes, and they have a character that newer homes do not: high ceilings, original woodwork, plaster walls, and rooms that have been lived in for generations. They also have older pipes, older roofs, and older drains, and those are the parts of a home that cause water damage. An older home is not a worse home, but it is a home where the parts that carry water have been in place for longer, and where a leak can be harder to find because the building has been altered over the years.

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This guide looks at water damage in older homes in general terms: older-home pipes and roofs, repeat leaks, inspection before renovation, and what no one can claim about prevalence. It makes no material claim for any specific home, and no prevalence claim for any place. What it gives you is a way to think about an older home after a water loss, and a routine for dealing with it.

Older-home pipes and roofs in general terms

Older-home pipes and roofs, in general terms, have been in place for longer than those in a newer home, and they have had longer to wear out. Pipes can corrode, joints can loosen, and fittings can fail, and the failure often shows up as a slow leak rather than a sudden burst, wetting a wall or a floor over weeks before anyone notices. Roofs can lose tiles, flashing can fail, and seals around chimneys and vents can wear out, letting rainwater in that shows up on a ceiling some distance from where it entered.

No claim is made here about the materials in any specific home, because older homes vary widely: some have original pipes, some have had their pipes replaced, some have a mix of old and new. The materials in a home can only be known by looking at that home, and a guide cannot say what any specific house contains. What can be said in general terms is that the older the parts that carry water, the more they deserve a look, and the more a slow leak deserves attention when it is found. A pipe that has served for decades has earned a check, not a presumption that it will serve for decades more.

Repeat leaks in general terms

Repeat leaks, in general terms, are leaks that keep happening in the same place, or in the same part of a home, and they are a sign that the cause has not been dealt with. A wall that keeps getting wet in the same spot, a ceiling that stains again after it has been repaired, or a floor that feels damp every winter are all repeat leaks, and they point to a source that is still active, or to a repair that dealt with the symptom rather than the cause. A leak that returns after it has been fixed is a leak that needs a different look, not another round of the same repair.

The reason repeat leaks are common in older homes is that the building has been altered over the years, and a repair done in one decade can hide a problem that shows up in the next. A pipe that was rerouted during a renovation, a roof that was patched rather than replaced, or a drain that was altered when a bathroom was moved can all create a leak that is hard to trace, because the building no longer matches its original plans. The answer is an inspection that traces the water back to its source, rather than a repair that deals with the mark on the wall. The burst pipe water damage repair page describes the response to a burst pipe in general terms, and the ceiling and wall water damage repair page covers wall and ceiling damage.

Water Damage in California's Older Homes — California water damage restoration guide

Inspection before renovation

Inspection before renovation is the step that saves an older home from a water problem that is built into the new work. A renovation that covers a wall, lays a new floor, or fits a new bathroom over a leak that has not been found will hide the leak, not fix it, and the water will keep wetting the materials behind the new surfaces until the damage shows through the new work. An inspection before the work starts, looking for moisture, staining, and damp, is the step that finds the leak while it can still be dealt with cheaply.

The inspection should look at the parts of the home that the renovation will cover, and at the parts that carry water: the pipes, the drains, the roof, and the walls around them. It should check moisture readings on the materials that will be covered, and it should trace any dampness back to its source before the new work begins. A renovation that starts with dry materials is a renovation that lasts. A renovation that starts with wet materials is a renovation that will need to be done again, and the second time it will cost more, because the new work will have to be taken out to reach the problem underneath.

No prevalence claim

No prevalence claim is made in this guide, for any place or any type of home. Older homes are not claimed to have more water damage than newer homes, and no figure is given for how often any kind of home suffers a water loss. Prevalence depends on individual homes, their condition, and their history, not on the age of the building alone, and a well-maintained older home can be drier than a poorly maintained newer one. The age of a home is one factor among many, and it should not be used to judge a specific property.

What can be said in general terms is that an older home deserves the same routine as any other home after a water loss: find the source, dry the materials through, fix the cause, and check again in the weeks that follow. The water damage restoration service covers the wider response in general terms. Homeowners in water damage restoration in San Francisco and across California who live in older homes can use the same routine, because the water problems are the same and the response is the same, whatever the age of the building.

Living in an older home

Living in an older home means living with a building that has a history, and the history is worth knowing, because it shapes the way water moves through the home. A home that has been altered over the years may have pipes that were rerouted during a renovation, a roof that was patched rather than replaced, or a drain that was altered when a bathroom was moved, and those changes can create a leak that is hard to trace, because the building no longer matches its original plans. Regular checks, looking under sinks, behind toilets, and around appliances, and looking at ceilings after heavy rain, are the routine that catches a problem early in an older home.

A renovation is the time to be most careful, because a renovation that covers a wall, lays a new floor, or fits a new bathroom over a leak that has not been found will hide the leak, not fix it. An inspection before the work starts, looking for moisture, staining, and damp, is the step that finds the leak while it can still be dealt with cheaply. No prevalence claim is made for older homes, and no material claim is made for any specific home, because the condition of a home can only be known by looking at that home. The routine is the same as for any other home: find the source, dry the materials through, fix the cause, and check again in the weeks that follow.

Key Takeaways

Older-home pipes and roofs, in general terms, have been in place for longer than those in a newer home, and they have had longer to wear out.
Repeat leaks, in general terms, are leaks that keep happening in the same place, or in the same part of a home, and they are a sign that the cause has not been dealt with.
Inspection before renovation is the step that saves an older home from a water problem that is built into the new work.
No prevalence claim is made in this guide, for any place or any type of home.
Living in an older home means living with a building that has a history, and the history is worth knowing, because it shapes the way water moves through the home.

Your Next Step

If this guide matches what you found at home, the next step is a visit — not a guess. Call and describe what you found, and the visit is arranged from what you describe. The Water Damage Restoration page explains what that service covers, and the Water Damage Restoration page explains what that service covers, and the services hub lists every service in one place.

Do not use a household vacuum on standing water while you wait, and if water is still coming in, turn off the shut-off valve for that fixture where you can reach it safely.

Keep the guides on this site bookmarked: the first guide, the signs guide, and the preparation guide cover the checks worth repeating — after moving in, and after bringing used fixtures home.

Water damage help is available across California. See water damage restoration in Meadowview, Sacramento, CA for one local example, or find your town on the service areas page.