What cleaning method is employed when heavy roots or debris are present in the pipe?

The cleaning method employed when heavy roots or debris are present in the pipe is power rodding. This technique utilizes a flexible rod equipped with cutting or scraping tools designed to break apart and remove substantial obstructions such as tree roots and solid debris from drainage systems.

Power rodding is specifically effective for addressing severe blockages because it uses stronger mechanical force than other cleaning methods, making it suitable for situations where traditional methods like jet cleaning may not be sufficient. Essentially, this method allows for the removal of stubborn materials through physical means, ensuring that pipes are cleared effectively to restore proper flow.

In contrast, jet cleaning relies on high-pressure water to clear blockages and may not be as effective when dealing with bulkier elements such as dense roots. Step cleaning is more systematic and involves a series of inspections and incremental cleaning, which may not address heavy debris effectively. Surface cleaning is generally limited to maintaining cleanliness on the surface of pipes and is not intended for deep blockages.