plumber-sydney-nsw-blocked-drains

Blocked Drain Clearing Process

Home > Blocked Drain Services > Blocked Drain Clearing Process

Blocked Drain Clearing Process In Detail

  • No two properties are the same

  • No two drains are the same

  • No two blockages are the same

We clear a lot of blocked drains in a similar amount of time but not one time fits all.

Average times for our blocked drain clearing processes below cover about 80% of all blocked sewer lines we attend however there will always be those exceptions to the rule.

1. ASSESSING THE BLOCKED DRAIN

On arrival we will carry out several assessment processes. 

  • Discuss the blocked drain symptoms and history of drain blockages

  • Visually inspect the blocked drain symptoms you are experiencing  

  • Determine the location of your sewer system on your property

  • Locate where your sewer connects to the Sydney Water main line

  • Estimate the location of the blockage within your sewer system

  • Look for suitable access to your underground sewer line (Cleanout)

Provided suitable cleanout access your the sewer line is available assessing the blocked drain can take on average 10 - 30 minutes.

Blocked drains Sydney Plumber NSW

This is a sewer cleanout

2. CLEARING THE BLOCKED DRAIN

Once we have gained access to the underground sewer line, we will setup our high-pressure water jet and CCTV drain camera equipment at the point of entry into the sewer line and proceed to clear the blocked drain using high pressure penetrating and flushing nozzles to clear all backed-up waste material. 

Depending on whether we are clearing one line or multiple lines, how many metres of drain we are servicing the design of the sewer system and whether we are dealing with a waste blockage or a tree root blockage clearing the sewer line can take on average 10 - 30 minutes.

blocked drain cleaning sydney nsw

3. INSPECTING THE CLEARED DRAIN

After the drain has been cleared of all waste material, we will carry out a CCTV drain inspection of the sewer line to confirm the following.

  • Confirm the drain is clear and if further flushing is needed

  • Determine if the blockage was caused by tree root intrusions

  • Inspect the drain for any faults or damaged sections

If our CCTV drain inspection shows a clear drain with no tree root intrusions our work is finished. Inspecting the blocked drain can take on average 10 - 30 minutes.

Clearing a waste blockage is a 3 - step process with the average time to complete the service being 1 hour +/- 30 minutes.

cctv drain camera survey sydney nsw
 

4. REMOVING TREE ROOT INTRUSIONS

If the blockage was caused by tree root intrusions the first 3 steps must be carried out first to prepare the drain for root cutting and removal. Root cutting is performed by visually positioning a tree root cutting nozzle at the point of root entry inside the pipe with the aid of our CCTV drain camera then cutting the tree roots back to the inside surface of the drain. If there are multiple root entry points along the sewer line this process will need to be carried out multiple times. We will then carry out a final camera inspection to confirm with you a clear drain. How long it will take to complete the root cutting process will be determined by the individual circumstances of each job and influenced by the following.

Root Cutting Video

Video replays automatically

  • The length of the tree root affected drain - Are we clearing 5 metres of drain or 100 metres of drain? 

  • The number of tree root entry points - Are we dealing with 1 or 2 tree root entry points or 20 or 30?

  • The number of drain lines that need clearing - Are we clearing only one main line or branch line or or are we clearing the main line and one or more branch lines? 

  • The diameter or size of the pipe - Are we clearing only 100mm or 150mm diameter pipes or are we clearing 100mm and 150mm pipes?

  • The structural condition of the drain - Are we dealing with a drain that is in reasonably good condition with only 1 or 2 defects or a drain that is extensively damaged and failing?  

  • The design of the drainage system - Do we have to negotiate multiple bends and vertical shafts or are we working inside straight pipes? 

blocked drains by tree roots plumber sydney nsw

Before Root Cutting

  • The degree of tree root impact - Are we only removing a few small light roots from 1 or 2 locations or are we removing extremely heavy multiple root intrusions from 20 or 30 locations? 

  • The species or type of tree - Are we cutting easy small soft tree roots or are we cutting difficult large or wiry tree roots?  

Estimating a time to complete the root cutting process is virtually impossible as this is determined by the many individual circumstances of each job however estimating 10 - 60 minutes could cover all but the most difficult tree root blockages.

Clearing a tree root blockage is a 4 - step process with average time to complete the service being 1 hour 30 minutes +/- 30 minutes.

tree roots blocking sewer pipe plumber sydney nsw

After Root Cutting

Waves Top Bottom Large.png
 

An explanation of the correct use of water jet nozzles 

water jet sewer drain cleaning sydney nsw

High Pressure Penetrating & Flushing Nozzles

Penetrating and flushing nozzles are designed specifically for clearing the waste material backed-up in the drain by penetrating through the blockage and flushing the waste material downstream to the Sydney Water main line and must always be used first. Many Plumbers will tell you they will carry out a drain inspection first. Drain inspections cannot be carried out first as putting a drain camera down a blocked drain is like putting goggles on and sticking your head in a bucket of mud! If the blockage is only a waste blockage in most cases penetrating, and flushing nozzles are all that is needed to clear the drain. 

If the blockage is caused by tree root intrusions penetrating nozzles will create a pathway through the tree roots to enable the waste material to flow to the main sewer line and allow a clear enough drain to carry out a drain inspection however penetrating and flushing nozzles are not designed to cut and remove tree roots. Once a pathway through the tree roots has been achieved and waste material cleared, a CCTV camera inspection can be carried out to assess the extent of any tree root problem.

blocked drains tree root sydney nsw

High Pressure Root Cutting Nozzles

Root cutting nozzles are designed specifically for cutting and removing tree root intrusions from the inside of drainage pipes and must always be used after penetrating and flushing nozzles have created a pathway through the tree roots and flushed away all waste material. Once the drain has been cleared of all waste material using penetrating and flushing nozzles, CCTV camera and root cutting equipment can then be used to remove any tree root intrusions.

Waves Top Bottom Large.png

DRAIN & FAULT LOCATION

Drain location work is optional and not considered an essential part of blocked drain clearing unless we need to find hidden or buried access points to gain entry into the sewer line or for some other essential reason. For waste blockages or regular drain servicing to remove tree root regrowth, location work is not normally required. For tree root blockage's location work is beneficial if the homeowner wants to carry out any drainage repairs or renewals due to damaged pipes, when cleanouts need to be found or installed, or locating buried inspection openings to access another part of the sewer network or sometimes the homeowner just simply wants to know the location of the issue for curiosity's sake. For whatever reason it is we can supply accurate location, depth, and direction information.

We carry out electronic drain locations for sewer lines and stormwater drains in Sydney for a variety of reasons for North Shore homeowners.

  • Locating drainage for renovations, extensions and new pools

  • Locating drains for granny flat connections

  • Drain relocations and alterations

  • Pool backwash gully installation

  • Diagnosing and locating damaged or defective drains

  • Locating tree root intrusion points

  • Installing or locating hidden sewer cleanouts

  • Locating buried inspection openings

  • Locating sewer reflux valves and boundary shafts

 

Depending on what we are locating and how many of them, drain location work can take on average 10 - 30 minutes.

We do not automatically carry out location work when clearing blocked sewer lines unless we must so the homeowner will need to request any location work they require at any time during the drain clearing process. We do not charge extra for drain location work.

sewer pipe location sydney nsw
 

VIDEO & PICTURE RECORDING

CCTV drain inspection video and picture recording is optional and not considered an essential part of blocked drain clearing. For waste blockages or regular drain servicing to remove tree root regrowth recording video of the work is not normally required. For whatever reason, if the homeowner requests video recording of any CCTV drain inspection, we can supply the video recording and pictures on USB flash drive.

We do not automatically record every CCTV drain inspection we carry out so the homeowner will need to request the drain inspection to be recorded before we start the inspection. We do not charge extra for recording CCTV drain camera inspections.

cctv drain camera inspection video sydney nsw

If you require further information regarding our blocked drain clearing process call us anytime!