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What Size PVC Pipe For Gutter Drain |Drainage Pipe Size Chart [3 Type]

To drain out the water from your home roofs effectively, you need to employ a PVC pipe for the job. You must know What Size PVC Pipe for Gutter Drain for a successful gutter system.

PVC As Gutter Drain And Benefits

We endeavor to explain these sizes in our discussions below. First, though, we peek into the benefits of this item or material insofar as its use in the roofing gutters is concerned. Below are some of the top benefits thereof:

Prevents Flooding and Erosion

The first and foremost benefit of this material is that it prevents flooding and erosion. This it does primarily by channeling the flow of water smoothly and consistently to the drains. In that way, it goes a long way in sparing your foundations of the possibilities of the water damages.

Resistant to Abrasion

Generally, the PVC material is highly resistant to the risks of abrasions. Even when it comes to direct contact with the running water for a longer duration of time, it hardly loses its shape or form. Instead, it retains its form intact and in doing so, spares you from the hefty repair and maintenance costs.

Lighter in Weight

For all practical purposes, the PVC material is truly light in weight. For this reason, it is more convenient to carry around and deploy to the exact location of use. The same goes for its installations and subsequent handling. You need not invest excessively high muscle power to have your way with it.

Possesses and Exudes Great Mechanical Strength

Though light in weight, the PVC material also possesses and exudes great mechanical strength. Thanks to this awesome strength, the material lasts longer, endures many spates of abuse, and also serves you well in many times and places. You have it for the taking if you want to have maximum peace of mind.

Exceedingly Tough

Lastly, the materials themselves are exceedingly tough. They hardly bend, warp, or even corrode easily as is the norm with the many alternatives. As a result of this, they last longer and also manage to free you from the need to spend too much to maintain your gutters.

Uses Of PVC As Gutter Downspout

YES, it is possible for you to use the PVC as your gutter downspout. Below are some of the advantages of using this material for your gutters:

Less Inclined to Clogging

Unlike the corrugated materials, the PVC is less inclined to clogging. For that reason, it is a more reliable avenue of channeling out the wastewater from the roofs to the drainage. Also, it is a lot easier to keep clean and maintain all the while of engagement.

Lasts Longer

Compared to the metallic materials, PVC lasts longer. The longevity of life of this material is largely brought about by the fact that it is highly resistant to corrosion. Also, it is tougher and less likely to be eaten away by the ants, termites, critters, and other insects.

Highly-resistant to Corrosion

As hinted above, the PVC material is highly resistant to corrosion. Plastic as we all know is not easily worn out with the agents of nature like an excessively high level of water or corrosive elements. You should thus expect it to take you longer and further than your normal gutter items.

Very Tough

Though light, the PVC is pretty tough and able to take on harsher impacts with absolute levels of reliability. Particularly, this material does not dent or sustain cleavages a bit too soon as is the norm with the many alternatives that be. Consider it hence a truly reliable long-term partner for you.


Plastic materials are some of the cheapest that money can buy at the moment. It hence goes that the PVC gutters are one of the cheapest you may probably come across. Your decision to use it to make your downspout is hence a surer way of saving greatly on the money you have.

Also Read : What Is Leaf Free Gutter Guard ?

Drainage Pipe Size Chart


Below is a typical drainage pipe size chart for your consideration:

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What Size PVC Pipe For Gutter Drain?

The exact size of the PVC for your gutter drains depends on several factors. In this segment of our discussions, we take a look at some of the factors that determine this metric. These are:

Height of the Building

How high or raised your building is from the ground level comes in handy as the foremost determinant of the size of the gutter drain. Definitely, a taller building requires a drain that is similarly longer. And of course, the opposite is true. You have to measure your building out well before proceeding hence.

Anticipated Volume of Water

How much water do you anticipate? Do you for instance live in an area that experiences heavy downpours and is also humid? In such cases and areas, you will no doubt require a gutter that is voluminous enough to handle more water. If you live in an arid area, a smaller one will do just fine.

Nature of the Terrain

The way in which the terrain is structured also determines to a great extent the size of the rain gutter. An area that is flat is naturally bound to experience heavier downpours. In such an area, you will need a gutter that is deeper and larger. The opposite is of course true and applicable for the undulating terrains.

Design of the Building

Closely related to the above is the design of the building overall. Some buildings may be designed to channel all the water via one spot or location. Others may be designed to distribute the flow of the water via many channels. The former will no doubt require a more voluminous downspout than the latter.

Depth of the Gutter Drain

Lastly comes the depth of the gutter drain. Generally, a good gutter should be about 12 to 14 inches deep. This one may however increase in the event that the area is flatter. That of course goes a long way in seeing to it that all the water is effectively drained and that no clogging happens or arises.

Frequently Asked Questions (FAQs)

We now ask and answer some of the frequently asked questions with regard to this particular topic of study:

How to Extend Your Downspout

A. Follow these steps to extend your downspouts:

  • Lay out the trench
  • Mark the trench line
  • Dig the trench
  • Lay out the pipe lengths and fittings
  • Install the starter elbow
  • Insert adapter and reducer
  • Continue the installation exercise
  • Begin the second downspout
  • Finish the pipe installations
  • Conclude the job and back fill

How to Bury Gutter Downspouts

A. The steps listed and explained below will help you to bury your gutter downspouts:

  • Confirm the prevailing rules that govern the matters of drainage in your area
  • Dig a trench that measures about 6 inches wider than the diameter of the drain pipe
  • Make this length of pipe no less than 3 inches deeper by use of a garden spade
  • Lay out the Pipe Lengths and Fittings by employing the couplers and the elbows
  • Slope the drain pipes at around 1-2 inches
  • Fix in place the clean-out valve next to the downspout


There you have them! We have done the much we can do belabor the subject matter of the What Size PVC Pipe for Gutter Drain. What more could you possibly demand from us? Is it not useful hence for you to now move ahead and implement the insight we have furnished you?

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