Replacing cast iron “Dead Pipe” & Whole-Home Repiping in Linda Vista
When planning a major renovation, a full-scale home repiping is rarely at the top of a homeowner’s wishlist. In this case study, we reveal why starting it before laying new flooring can save thousands of dollars in hidden underground plumbing system repairs. That’s exactly what happened on a recent project Almco Plumbing just handled over in Linda Vista, San Diego: the homeowner was preparing a 1960s house for new tenants and brought in a concrete contractor to fix foundation cracks. But once they jackhammered up the bathroom floor, they found its possible reason: a completely dead old cast iron pipe, which crumbled at the touch.
Why Home Repiping Became Necessary Beneath the Slab
The catch is, while cast iron drain lines can look fine from the top, the bottoms can be destroyed by decades of coastal soil moisture and pipe corrosion. That is why taking action with complete home repiping is often the only permanent fix. As mentioned the CEO of Almco Plumbing, Vlad Khorenko, during this home repiping breakdown:
“You look at the pipe and say, ‘Hey, pipe is great, it looks like new.’ But you never guaranteed it, because if you look down here, this is the same pipe—it’s not a pipe at all, and no one broke it with a hammer. It’s just dead pipe over here. And six inches above, it’s in perfect, great condition.”
The property had a few other major plumbing issues stacked up. The original laundry drain line had completely collapsed underground, forcing a temporary plumbing bypass straight into the kitchen branch. On top of that, the freshwater supply lines beneath the concrete slab were heavily corroded, posing a major slab leak risk for the new floors. Standard sewer camera inspections couldn’t even catch the full damage without considering full home repiping options, since heavy scale and sludge inside old cast iron pipes easily hide bottom-side channel rot.
Solutions: Executing Home Repiping & Trenchless Repair
Instead of waiting for an expensive plumbing emergency after putting down fresh floors, the owner opted for complete home repiping and drain line replacement in just 3 days. Vlad Khorenko explains that timing a comprehensive home repiping project during an active remodel was a major cost-saver:
“It’s probably 30% cost to do repipe when you’re on the process of remodel than do repipe when someone else is already living in… Because no one lives here, it saves almost 40% of the time.”
To keep the timeline tight without destroying the property, Almco deployed two plumbers to handle two projects: the house repiping and sewer line replacement at the same time.
What was done:
1. No-Dig Trenchless Sewer Replacement
To avoid tearing up the driveway, lawn, and sidewalk, the exterior crew used trenchless pipe bursting. They dug a single access pit outside, tunneled 1.5 feet under the sidewalk to the city sewer connection, and pulled a brand-new SDR-17 HDPE pipe directly through the old cast iron. They also installed heavy-duty Husky couplings at the transition fittings and set up a proper two-way sewer cleanout for easy future drain maintenance.
2. Whole-House Freshwater PEX Home Repiping
The interior crew handled the home repiping by bypassing old slab lines entirely, routing brand-new PEX supply lines overhead through the attic to feed the kitchen, bathrooms, and laundry area. They installed a new main water shut-off valve, a high-efficiency pressure regulator valve, a new hose bibb, and a separate regulator for the irrigation system. Finish trim was deliberately deferred until drywall and cabinetry were installed to guarantee a flawless plumbing installation layout.
Result
Almco Plumbing handled the entire plumbing repair service for this 1960s house undergoing a remodel in Linda Vista, San Diego in just three days—a noticeable drop from the standard four to five days typical for occupied homes. Combining trenchless sewer bursting with full-service home repiping left the driveway and lawn completely intact. Tackling the home repiping work while the building was already opened up saved the homeowner between 30% and 40% in total costs, equipping the house with a seamless sewer line built to last 75 to 100 years.
If your home was built before 1970, keep in mind that old cast iron sewer lines are living on borrowed time. Even if the inside looks fine on a drain camera inspection, delaying necessary home repiping can lead to unexpected slab leaks after new flooring is installed.
If your home is already in the process of renovation, or you are tearing up floors or remodeling the walls, it’s just the right moment to schedule Almco Plumbing, licensed San Diego plumbers for an inspection, to get an expert assessment for home repiping while everything is exposed and open and pipes are easier to reach, to fix all pipe problems and save a fortune in drywall, concrete, and flooring repairs later on.