Older homes bring four recurring complications: aging cast iron or clay pipe that may crumble when disturbed, slab-on-grade construction that puts the trap under concrete, undersized or missing venting, and connections between incompatible pipe materials. A camera inspection before the work starts prevents most of the surprises.

Aging Pipe Material

Homes built before the 1970s in Albuquerque commonly have cast iron drain lines, and some older properties still have clay. Both degrade — cast iron corrodes from the inside out, clay develops joint separations and root intrusion. The complication is that disturbing a section to install a new trap can reveal that the adjacent pipe is also failing. Better to know that before the concrete is open than after.

Slab-on-Grade Construction

Most Albuquerque homes sit on slab, which means the floor drain, its trap, and the connecting line are encased in concrete. Replacement involves cutting and repouring, so the scope needs to be right the first time. This is exactly why we run a camera inspection first — it shows the condition of the surrounding line and tells us how much slab actually needs to come up.

Venting

Older installations frequently have inadequate or missing venting, and a poorly vented trap siphons dry every time a nearby fixture drains — which then lets sewer gas in. If the drain has always smelled, venting is a likely cause, and fixing the trap alone will not solve it. Current code may require venting the original installation never had.

Mixed Pipe Materials

Connecting new PVC or ABS to existing cast iron or clay requires proper transition fittings. Done poorly, those joints leak or catch debris and become the next clog point. This is common in homes that have had piecemeal repairs over decades.

Permits and Code

Drain work in older homes often triggers current code requirements that the original installation predates. We pull permits where required and bring the work up to code rather than replicating an old configuration.

Consider the Bigger Picture

If your home has original drain lines and a history of backups, it may be worth evaluating sewer line condition or repiping while access is already open.

Contact B. Carlson about floor drains in Albuquerque.