Orangeburg Pipe: How to Identify It on a Sewer Camera

Orangeburg is bituminized fiber pipe: layers of wood-pulp fiber bonded and impregnated with coal-tar pitch. It was cheap, light and easy to lay, and it went into a lot of US sewer laterals after World War II. If you scope a house built roughly between 1945 and 1972 and the lateral looks black, soft-walled and out of round, think Orangeburg.

The short version for the customer: Orangeburg has outlived its design life almost everywhere it is still in the ground, and the usual recommendation is replacement.

Background: why so many older homes have it

Fiber conduit pipe goes back to the 19th century, but its big run in sewer laterals came after WWII, when metal pipe was scarce and the housing boom needed cheap drain line. Production ended in the 1970s as PVC and ABS took over. Sources give a design or advertised life of around 50 years, with failures reported much sooner. Most codes have since removed it from their approved material lists.

Some descriptions of the product note that asbestos fibers were used in the mix. If a crew is going to cut or remove it, that is a question for local disposal rules, not something to guess at from the video.

What Orangeburg looks like on camera

Signs to look for, roughly in the order they develop:

• Dark, matte, slightly fibrous wall. Newer sections can look close to ABS. Older ones look dull and textured.
• Ovaling. The pipe flattens under soil load, usually top to bottom. On screen the round opening turns into a squashed oval. Deformation typically shows up well before a full collapse.
• Blistering and bubbling. Raised bumps or bubbles on the inner wall where layers have separated.
• Delamination. Layers peeling or flaking off the wall, sometimes hanging in the flow.
• Roots at joints. Orangeburg was sold as root resistant, but as the pitch ages and the wall takes on water, roots get in, often at the joints.
• Collapse. In the worst sections the pipe is flattened enough that the head can’t pass, or the wall has broken in.

Material	Wall on camera	Shape	Typical joints
Orangeburg	Black, dull, fibrous or blistered	Often ovaled	Roots common at joints
ABS	Black, smooth, uniform	Round	Solvent-welded fittings
PVC	White or green, smooth	Round	Solvent-welded or gasketed bells
Clay tile	Brown/orange, glazed or gritty	Round	Frequent bell joints, roots common
Cast iron	Dark, rough scale and rust	Round	Hub joints, see cast iron corrosion

Record the material transitions with footage. An Orangeburg lateral may change to another material at the foundation or near the city connection, and a later repair may have replaced a section in between.

Confirming it before you write it up

Calling a line Orangeburg on a report affects a sale or a repair budget, so confirm it where you can. Look at the pipe wall close up with the head stopped and lit well, compare it with any exposed pipe at the cleanout, and ask the owner whether the lateral has ever been replaced. If a section is clearly fiber pipe and another is not, record where each one starts. When you can’t be sure, say “suspected Orangeburg” and explain why.

Why it fails

• It is not a rigid pipe. Under soil load the fiber wall slowly deforms instead of cracking cleanly.
• Water gets into the wall. As the pitch ages, the fibers absorb moisture, soften and separate into layers.
• Roots. Once the wall or joints soften, roots enter and speed up the damage.
• Age. Nearly every Orangeburg line still in service is past its advertised life.

Coding it

PACP lists Orangeburg/pitch fiber as a pipe material (code OB) in the inspection header. The defects themselves are coded in their normal families: deformation in the Deformed (D) family, roots in the Roots (R) family, and so on. The deformed codes are split between rigid and flexible pipe, so check how your PACP version treats the material before you pick one.

What to recommend

Replacement is the standard recommendation. A deforming fiber pipe will not get rounder, and the areas that look fine today are the same age as the areas that have failed. Common options:

• Open-cut replacement with PVC or other approved pipe.
• Pipe bursting, which pulls new pipe through the path of the old line while fracturing it outward. Whether it suits a given lateral depends on the soil, the depth and what else is nearby.
• Lining is sometimes offered, but a liner relies on a host pipe that holds its shape. Many contractors decline to line Orangeburg that is already ovaled or blistered.

If the customer isn’t ready to replace, the report should still show the worst sections with footage and a sonde locate, so they know what they are deferring. A camera with a built-in locator makes that quick; see sewer cameras with a locator.

For pricing the inspection itself, see how much to charge for a sewer camera inspection. Roots in Orangeburg are covered in more detail under root intrusion.

FAQ

How can I tell Orangeburg from ABS on camera?

Both are dark, but ABS has a smooth, uniform, glossy wall and a round profile. Orangeburg usually shows a dull, fibrous or bubbled surface, and older runs are often ovaled. Check the material transitions too: the lateral may change to cast iron or another material near the house.

Can Orangeburg pipe be lined?

It depends on the condition, and many contractors avoid it. A liner needs a host pipe that holds its shape during installation and cure. Orangeburg that is already ovaled, blistered or delaminating is usually a replacement job. The lining contractor should make that call from the video.

Is Orangeburg still allowed by code?

No. It has been removed from the list of acceptable materials by most building codes, and it has not been made for decades. Existing lines are not illegal to leave in place, but any repair is done with current approved pipe.

Should I jet or cable an Orangeburg line?

Carefully, if at all. The wall is soft compared with clay or cast iron, and aggressive cutting heads can tear it. Many pros camera the line first and keep cleaning to what is needed to finish the inspection.