How to Unblock a Drain: Safe Home Remedies & When to Call a Professional in Cape Town & Johannesburg

Are you searching for “how to unblock a drain”, “home remedies for blocked drains”, or “blocked drain cleaning near me”? You’re not alone.

Blocked drains are one of the most common plumbing problems in Cape Town and Johannesburg. Whether it’s a blocked sink drain, shower drain, outside drain, or sewage drain, the smell, mess, and inconvenience can quickly become overwhelming.

In this complete guide, Drainmen Services explains:

  • Safe DIY drain unblocking methods

  • What causes blocked drains

  • When to avoid chemical drain cleaners

  • When to call a professional drain cleaning company

  • How to prevent recurring blockages

How To Unblock a Drain: Safe Home Remedies That Actually Work

If you’re dealing with a slow-draining sink or clogged shower, here are safe home remedies for blocked drains you can try before calling a professional plumber.

1. Unblock a Drain with Boiling Water

One of the simplest blocked drain solutions is boiling water.

Hot water helps dissolve:

  • Fat build-up (FOG – fat, oil, grease)

  • Soap residue

  • Minor grease blockages

How to do it:

  1. Boil a kettle or pot of water

  2. Slowly pour it down the drain in stages

  3. Wait a few minutes

  4. Repeat if necessary

⚠ Important: This works best for minor grease blockages. It will NOT fix tree root intrusion, collapsed pipes, or severe sewer blockages.

If boiling water doesn’t work, you may need professional drain cleaning services in Cape Town or Johannesburg.

2. Baking Soda and Vinegar Drain Cleaning

Searching for “how to unblock a drain with baking soda”? This is one of the most popular eco-friendly drain cleaning methods.

Method:

  • Pour ½ cup baking soda into the drain

  • Add ½ cup vinegar

  • Let it foam for 30 minutes

  • Flush with boiling water

The chemical reaction helps loosen organic debris and minor build-up.

This method is safe and chemical-free, but it may not clear stubborn or deep sewer blockages.

3. Baking Soda and Salt Method

If you don’t have vinegar, you can try:

  • ½ cup baking soda

  • ½ cup salt

  • Let sit for 30 minutes

  • Flush with boiling water

This method helps break down grease and mild pipe residue.

4. Using a Plunger to Unblock a Drain

A plunger is effective for:

  • Blocked toilets

  • Sink blockages

  • Shower drain clogs

Steps:

  • Create a tight seal over the drain

  • Push and pull firmly

  • Repeat several times

⚠ Be careful: Excessive force can compact the blockage further or damage old pipes.

If plunging doesn’t clear the drain, you may require high-pressure drain jetting.

5. Avoid Chemical Drain Cleaners

Many homeowners search for “best chemical drain cleaner”, but we strongly discourage their use.

Chemical drain cleaners can:

  • Corrode pipes

  • Damage PVC and old plumbing

  • Cause toxic fumes

  • Mask serious pipe damage

For example, if tree roots are causing your blocked sewer line, chemicals may temporarily clear the water flow but leave structural damage behind.

Instead of risking pipe corrosion, call a professional blocked drain specialist.

How to Unblock Specific Types of Drains

Different drains require different approaches.

How to Unblock a Sink Drain

Kitchen sink drains often clog due to:

  • Grease

  • Food waste

  • Soap build-up

You can remove the U-bend (if confident) and clean it manually. Always place a bucket underneath to catch water.

If the blockage persists, it may be deeper in the sewer line and require a CCTV drain inspection.

How to Unblock a Shower Drain

Shower drains commonly clog due to:

  • Hair build-up

  • Soap residue

  • Body products

A drain snake (plumber’s auger) is the most effective DIY tool for removing hair clogs.

If the blockage returns repeatedly, you may need professional drain cleaning in Cape Town or Johannesburg.

How to Unblock an Outside Drain

Blocked outdoor drains are common in South Africa due to:

  • Sand and debris

  • Leaves and mud

  • Tree root intrusion

  • Stormwater blockages

You can try using:

  • Drain rods

  • A pressure hose

  • A drain auger

However, outside drain blockages often require industrial hydro jetting equipment, which only professional drainage companies provide.

How to Unblock a Sewage Drain

A blocked sewer drain is serious.

Signs include:

  • Sewage backing up into toilets

  • Strong odours

  • Multiple drains backing up at once

Always:

  • Wear gloves and protective gear

  • Shut off the main water supply

  • Avoid direct contact with sewage

If plunging or snaking does not work, call an emergency drain cleaning company immediately.

Drainmen Services provides 24/7 emergency sewer unblocking in Cape Town and Johannesburg.

Why Are My Drains Blocked?

Understanding the cause prevents future issues.

Common Causes of Blocked Drains:

✔ Tree root invasion
✔ Fat, oil and grease (FOG) build-up
✔ Hair clogs
✔ Soap residue
✔ Foreign objects
✔ Collapsed or damaged pipes
✔ Stormwater debris

Tree root intrusion is especially common in older properties in Cape Town and Johannesburg.

Professional Drain Cleaning Services by Drainmen Services

If DIY methods fail, it’s time to call the experts.

Drainmen Services offers:

  • 24-hour emergency drain cleaning

  • High-pressure hydro jetting

  • CCTV drain camera inspections

  • Sewer line repairs

  • Pipe relining

  • Commercial and industrial drain cleaning

  • Stormwater drain unblocking

  • Sewage drain cleaning

We service:

  • Residential homes

  • Body corporates

  • Restaurants

  • Shopping centres

  • Factories

  • Municipal facilities

Our professional hydro jetting machines remove:

  • Tree roots

  • Grease build-up

  • Sludge

  • Sand

  • Severe sewer blockages

Prevent Blocked Drains with Annual Maintenance

We recommend:

  • Annual CCTV drain inspections

  • Preventative drain jetting

  • Routine sewer line maintenance

Especially for:

  • Older homes

  • Apartment complexes

  • Restaurants

  • Commercial buildings

Preventative maintenance reduces emergency plumbing costs and protects your property.

How To Unblock a Drain – Final Thoughts

DIY drain unblocking methods can work for minor clogs. However, severe or recurring blockages require professional intervention.

If you are searching for:

  • Blocked drain cleaning Cape Town

  • Emergency plumber Johannesburg

  • Sewer unblocking near me

  • High-pressure drain jetting services

  • Professional drain cleaning company

Drainmen Services is available 24 hours a day, 365 days a year.

Don’t let a blocked drain turn into property damage.

📞 Contact Drainmen Services today for fast, reliable, professional drain cleaning in Cape Town and Johannesburg.