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Do I Need to Replace Cast Iron Pipes?

Important notes before you begin:

This self-check assumes the original under-slab or underground sewer pipes have not already been replaced by a previous owner. Even in homes built before 1977 — or during the 1977–1985 transition period — it’s possible that cast iron sewer pipes were replaced with PVC at some point in the past.

This tool is designed to help homeowners understand what likely applied when the home was originally built, not to override documented replacement work that may already exist.

In some situations, confirming the type of sewer pipe below the slab requires additional context. While we do not advertise or routinely perform sewer inspections, we can sometimes help confirm whether a home has under-slab cast iron or PVC sewer piping when it’s necessary to make an informed decision. If clarification is ever needed, we recommend reaching out to us directly rather than hiring another company solely to determine pipe type.

1. When was your home built?

2. Have you experienced any of the following sewer or drain issues?

Select all that apply.

3. Has a plumber ever told you your home has cast iron sewer pipes?

🔵 PVC Sewer Pipes - No Action Needed

Good news - your home likely has PVC sewer piping below the slab.

Homes built in or after 1986 in North Texas were typically plumbed with PVC sewer pipes under the slab. PVC does not have the same deterioration issues as older under-slab cast iron sewer systems and, in most cases, does not need to be replaced.

In some cases, homes built earlier may also have PVC sewer piping below the slab if the original cast iron system was replaced by a previous owner.

Based on your answers, there is nothing you need to do at this time.

Our company focuses exclusively on replacing under-slab cast iron sewer pipes. We do not perform work on PVC systems or above-slab piping. That said, we're always happy to answer general questions or help point you in the right direction if something ever comes up.

Thank you for taking the time to use this self-check - we genuinely appreciate it.

You may also find these pages helpful: Cast Iron Pipe Replacement Pricing, Case Studies, and Warranty Information.

Contact (informational only):
📞 Phone / Text: 972-992-1777
📧 Contact Us

🟠 Transitional Build Period - Possible Under-Slab Cast Iron

Your home was built during a transitional plumbing period.

Homes built between 1977 and 1985 in North Texas were typically plumbed with either under-slab cast iron sewer pipe or under-slab PVC sewer pipe, depending on the builder and timing.

In a smaller number of cases, some homes used PVC piping above the slab while still having cast iron sewer pipe below the slab. This was not common and varied by area.

Some homes in this age range may have already had their original under-slab cast iron sewer pipes replaced by a previous owner.

Based on your answers, replacement may not be urgent, but understanding what type of sewer pipe exists below the slab is important, as under-slab cast iron sewer systems deteriorate over time, while PVC typically does not require replacement.

Our company specializes exclusively in full under-slab cast iron sewer pipe replacement. We do not perform inspections, repairs, PVC work, or above-slab pipe replacement. In cases where pipe type truly can't be determined from available information, we can sometimes help confirm whether the under-slab sewer piping is cast iron or PVC, so homeowners don't need to involve another company just to get an answer.

You may also find these pages helpful: Cast Iron Pipe Replacement Pricing, Case Studies, and Warranty Information.

Contact (informational only):
📞 Phone / Text: 972-992-1777
📧 Contact Us

🔴 Under-Slab Cast Iron Sewer Pipes - Replacement Will Be Needed

Your home likely still has under-slab or underground cast iron sewer pipes.

In North Texas, under-slab cast iron sewer systems were commonly installed in homes built before the mid-1980s. These systems deteriorate over time due to corrosion and structural breakdown.

Replacement is not always immediate, but it will eventually be necessary if original cast iron pipes remain in place.

Our company focuses exclusively on full under-slab cast iron sewer pipe replacement. When the time comes, we provide free, no-obligation replacement estimates and explain the process clearly.

You may also find these pages helpful: Cast Iron Pipe Replacement Pricing, Case Studies, and Warranty Information.

Contact (informational only):
📞 Phone / Text: 972-992-1777
📧 Contact Us

⚪ Unable to Determine Pipe Type with Confidence

Based on the information provided, there isn't enough detail to determine your sewer pipe type with confidence.

When the construction year is unknown and there are no symptoms or prior confirmations, it's not possible to reliably determine whether a home has under-slab cast iron sewer pipe or PVC sewer pipe without additional context.

Our company specializes exclusively in under-slab cast iron sewer pipe replacement and does not inspect or work on PVC systems.

You may also find these pages helpful: Cast Iron Pipe Replacement Pricing, Case Studies, and Warranty Information.

Contact (informational only):
📞 Phone / Text: 972-992-1777
📧 Contact Us

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In-House Plumbing Company

5903 Curtis Dr.
Allen, Texas 75002

(972) 992-1777


Hours of Operation

Mon – Fri: 8 AM – 5 PM
Closed 12 PM – 1 PM for Lunch
Sat: Closed
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