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What Causes A Blocked Stormwater Drain?

19 July

A stormwater drain is the most effective way to remove rainwater from your property.

However, many people make the mistake of ignoring maintenance, which results in minor to severe blockages. And getting rid of them can require a lot of time and money.

That’s why we decided to introduce you to some of the top causes behind a blocked stormwater drain and how to prevent or avoid them altogether. So, dive in!

3 Reasons Behind A Blocked Storm Water Drain

Stowmwater Drain Blocked With Debris

1. Debris Accumulation

The primary reason behind a blocked stormwater drain is the accumulation of dirt and debris that enters it along with rainwater, especially from the roof and gutters. This can include twigs, branches and leaves, and plastics or bird corpses lying on the roof or gutter.

Not only that, but the drainage channels from your driveway or garage may also feed into this drain, which may bring more foreign material with the water.

2. Tree Intrusion

If you have a tree near the stormwater drain, its roots are likely to enter the drain to absorb the water and nutrients. And their width can obstruct the passage within the pipes impeding the water flow.

Besides, the roots can forcefully penetrate the drain to reach the ground and the nutrients below it. In many cases, the force of intrusion can break the drain. You may need to repair or replace it depending on the extent of the damage.

3. Corrosion

Similar to the plumbing lines inside your home, the stormwater drain outside is susceptible to corrosion with the amount of moisture it’s exposed to. Corrugated steel, one of the most preferred materials for stormwater drains, is prone to corrosion by microbial matter that enters it with water and plant debris.

Once the corrosion spreads through the surface of the drain (whether on the interior or exterior), it can cause it to develop cracks and crevices. On the other hand, concrete pipes can crack from the constant exposure to the elements, especially prolonged heat.

The cracks thus formed can also result in a leaking stormwater drain, and the leaking water can damage your home’s foundation over time. Likewise, pools of water on the ground can damage the lawn or get absorbed by it, affecting the floors of your home.

What Are Some Effective Ways To Clean A Blocked Stormwater Drain?

A minor clog in the drain can generally be broken down with a plunger. Carefully place the plunger on the drain cover to create a tight seal. Then use swift to and fro movements to break the clog. Finally, use a garden hose to flush the debris down the drain.

Stormwater Drain With Leaves

However, this method may not be effective for all clogs and repairing or replacing the drain in case of damage can be difficult to do by yourself. But you can rely on the techniques used by professional plumbers to resolve any issue with your stormwater drain. Some of them include:

1. High-Pressure Washing

High-pressure washing is among the most successful techniques for clearing clogs in stormwater drains. This involves washing the drain using a specialised hose and nozzle that sprays high-pressure water (between 4,000 and 5,000 PSI) from a motorised pump.

The stream of pressurised water can break down any clogs, even the ones caused by tree branches or roots. Moreover, plumbers may conduct CCTV inspections before employing the pressure washer to detect the exact location and nature of the clog.

Although you can rent a pressure washer for the purpose, we’d recommend letting a professional do it for the best results. This also ensures that your property isn’t damaged in any way by the high-pressure jet.

2. Drain Relining Or Replacement

As mentioned before, some blockages can cause the pipe to crack or break, which needs to be repaired or replaced. And pipe relining is one of the best methods to achieve both.

Plumbers start by clearing out blockages and inserting epoxy resin into the existing structure to fill in any cracks. Once set, the resin will become the new pipe.

The biggest advantage of this method is that it’s completely non-invasive, cost-effective and can be performed on any type of drain. Additionally, pipe relining can be used to repair the entire drain or just a few sections.

That said, some damages may require the plumbers to dig the ground and perform the necessary repairs after inspecting the drainage thoroughly. However, you can rest assured knowing that they level the ground to preserve the look of your lawn or driveway.

Prevent A Clog, Get In Touch With A Plumbing Expert

That’s all we had for today.

But before we leave, here are a few things you can do to prevent your storm water drain from clogging in the first place. Firstly, clean the gutter, roof and ground regularly, especially if you have large trees near the drain. We’d also suggest planting new trees away from the drain. And, if you need professional assistance, get in touch with the Gold Coast Plumbing Company team.