Perforated Drain Pipe Vs. Solid: Key Features And Differences

The difference between perforated drain pipe and solid pipe is simple: perforated pipe is designed to collect or disperse water through openings, while solid pipe is designed to carry water from one place to another without losing it along the way.

Use the wrong one, and you can end up moving water exactly where you don’t want it.

Here’s how to choose correctly.

A Quick Comparison Table

FeaturePerforated Drain PipeSolid Drain Pipe
OpeningsHoles or slotsNone
Main purposeCollect or disperse waterTransport water
French drainsYesUsually used after collection section
Foundation drainsYesUsed to carry collected water away
DownspoutsUsually noYes
Yard groundwater drainageYesYes for outlet section
Septic drainfieldPerforated distribution pipe may be usedUsed for transport
Gravel surroundCommonly requiredApplication-dependent
Geotextile/filter fabricOften usefulUsually unnecessary for simple transport
Root/soil intrusion riskHigher if installed incorrectlyLower through pipe wall
Best useSubsurface water collectionMoving concentrated water to discharge

Comparison Between Perforated And Solid Pipes

perforated vs. solid drain pipe

This chart gives you a concise overview of the differences between the two. As well as that, this chart can work as a table for assessing the merits and emirates of each pipe.

It shall also help you evaluate which pipe best suits the needs of your bathroom’s drainage facility.

Keep in mind that the environment you live in will also be a key factor in determining which pipe is better suited to your needs.

Now that we have seen a short comparison let us get into the details. We will be breaking down each factor to give you an elaborate understanding of these two products.

  • Holes

When it comes to the hole, the names of these products are pretty self-explanatory. Perforated pipes have tiny holes, or as the name suggests – perforation along their body.

Some even have slits. This is to expel the water out as the water flows through. Solid pipes, on the contrary, are smooth, and there is no perforation on them.

  • Durability

Durability is often the deal-breaker when it comes to purchasing pipes. As both these pipes will be underground, durability is paramount.

When it comes to durability, solid pipes offer greater rigidity than perforated pipes. For pipes, durability is measured in terms of how well they fare against clogs and penetration of roots underground.

Perforated pipes have lower durability due to the presence of holes along their body. This makes these pipes susceptible to clogs and allows roots to penetrate their body through those holes.

On the flip side, solid pipes have a much more consistent body. Thus, the penetration of roots is out of the question.

But this does not mean that perforated pipes have no durability at all. They are just less durable. Solid pipes are in general more long-lasting than perforated pipes due to their higher durability.

  • Flexibility
perforated drain pipe close look

The next point of contention is flexibility. In regards to pipes, flexibility can be deemed as the property of the pipes to withstand various types of conditions.

That also includes adapting to transitioning conditions, such as shifting from one season to another.

When it comes to such adaptability, perforated pipes are better at weathering storms than solid pipes.

  • Clogs And Maintenance

As we have mentioned in a point beforehand, perforated pipes are more susceptible to clogs. This makes their maintenance a little more difficult than that of solid pipes.

Whilst clogs also might occur in solid pipes, they are easier to deal with in comparison.

  • Water Flow

Water flow in perforated pipes is slower due to the presence of the pores, which leads to a higher potential for debris getting stuck.

As solid pipes are smooth, water flow is much faster.

  • Size Variation

If you go the market or even scour through online pages, you will see that solid pipes offer higher variation in sizes.

Thus it makes them more versatile when it comes to different stagnant environments.

  • Price

A solid pipe will cost you more than a perforated pipe. This is primarily because solid pipes have greater variation in sizes.

Depending on the size of your project, you could be spending a significant amount of more money on installing a solid pipe.

  • Installation

Installation of solid pipes is much more complex than that of perforated pipes.

Before we end the discussion, let us first know about these two types of drainage pipes in more detail.

Perforated Drainage Pipes

perforated drain pipe

Perforated drainage pipes are pipes with very miniature holes or slots on them. These holes allow water to enter or exit as it moves along the pipe.

Such pipes are very useful for underground drainage systems since they absorb water and, at the same time, drain the water out of the way.

These pipes can be made out of a variety of materials. The materials include PVC, clay, cement, and iron. They are very flexible because they are lightweight.

Flexibility is a very crucial feature as perforated pipes are mostly used underground. Rigid pipes might crack under the pressure of changing seasons.

But Perforated pipes are more suited to weather storms and changing conditions. Next, we will look into the different types of perforated drainage pipes.

Types of Perforated Pipes

There are two main types of Perforated drainage pipes. People choose from the available alternatives based on what types of conditions surround them. These pipes are:

  • Plastic Drainage Pipe

These drainage pipes have holes at the top of them. Water enters through the opening at the top and then enters the pipe through the holes.

Plastic drainage pipes are rigid but not that flexible. Thus, they might succumb to changing seasons when placed underground.

  • Corrugated Drainage Pipes

Corrugated pipes are black in color, with slits present all around the pipe. This type of pipe is very flexible.

The idea behind the design is that water will enter from the top of the pipe, but if the water saturates the ground, then it can enter from beneath as well.

Many people recommend using this pipe due to its higher flexibility.

Next, we will be looking into another type of pipe – Solid Pipes. This is a very common type of pipe used by many homeowners.

Solid Pipes

solid drain pipe

These types of pipes are used widely for sewers, as well as for plumbing needs. 

They are available in a variety of lengths, sizes, and diameters.

Solid Pipes have higher durability than corrugated pipes.

They cannot be penetrated easily when they are buried underground. You can also clean them out very easily.

This is because they have very smooth walls, which do not have any pores.

As a result, it is relatively easy to remove clogs and debris. They also have a higher lifespan than perforated pipes.

Although they have a higher lifespan, solid pipes are very difficult to install.

Due to their variation in sizes, you could also end up paying more for them.

Which Pipe Clogs More Easily?

Perforated systems have more ways for sediment to enter because the pipe intentionally communicates with surrounding soil.

A poorly built French drain can accumulate:

  • Silt
  • Fine sand
  • Organic debris
  • Roots

That is why the gravel and filtration system matter.

Solid pipe is more isolated from the surrounding soil.

However, it can still clog from material entering through:

  • Downspouts
  • Catch basins
  • Open drains
  • Poorly screened inlets

Cleanouts are useful for long underground runs regardless of pipe type.

Perforated Vs. Solid Pipe for Yard Drainage

Use perforated pipe when you want to lower moisture in a broad area of soil.

Examples include:

  • Soggy lawn
  • Waterlogged planting area
  • Groundwater beside a retaining wall
  • Saturated soil near a foundation

Use solid pipe when the water enters through a defined inlet such as:

  • Catch basin
  • Channel drain
  • Downspout
  • Sump pump

Many yard-drainage systems use perforated lateral drains connected to a solid main line.

Perforated Vs. Solid Pipe for a Retaining Wall

Perforated pipe is commonly installed behind retaining walls to intercept water accumulating in the backfill.

Water pressure behind a wall can cause significant structural stress.

A drainage system may include:

  • Free-draining aggregate
  • Geotextile
  • Perforated collector pipe
  • Solid outlet pipe

The goal is to collect water along the wall and then carry it safely away.

Again, using both pipe types can be the best solution.

Perforated Vs. Solid Pipe for Septic Systems

A septic system may use both.

Solid Pipe

Wastewater traveling from the house toward the septic tank is carried in solid piping.

Perforated Distribution

Depending on the septic-system design, treated effluent may later be distributed through perforated piping in the drainfield.

These are completely different jobs.

Never substitute ordinary yard-drain pipe for septic piping without following the approved septic design and local code.

Septic systems are engineered wastewater systems, not general landscaping drains.

Perforated Drain Pipe Vs. Solid: Which Should You Use?

Choose perforated pipe when you need to collect water that is spread throughout the soil.

Typical examples include:

  • French drains
  • Foundation drainage
  • Wet lawns
  • Retaining walls
  • Groundwater interception

Choose solid pipe when water is already concentrated and you simply need to move it somewhere else.

Typical examples include:

  • Downspouts
  • Catch basins
  • Sump discharge
  • Stormwater outlets
  • French-drain outlet sections

And don’t assume you need to choose only one.

One of the most effective residential drainage layouts is:

perforated pipe to collect the water + solid pipe to carry it away.

Final Words

What pipe you will purchase is entirely upto you at the end of the day. Assess your surroundings as well as your bathroom, and do proper market research before making your purchase decision.

We hope our perforated Drain Pipe vs. Solid comparison will come in handy when you are making your decision.

Happy Pipe Shopping!

Clyde Mitchell

I run a hardware store nearby Court Anaheim, CA. Over the last 7 years, I have been blogging about home improvement and yes, I own ReliefInBath.comFrom me and this website, you can expect some useful tips on great ideas for a modern bathroom.

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