How to clean drain pipes
To clean drain pipes at home, remove debris from grates and traps, pour hot water to flush away grease and use mechanical methods such as a plunger or a drain snake if the water drains slowly. When the dirt is further into the network, or the problem keeps coming back, the solution is professional cleaning with pressurised water, which leaves the pipe clean on the inside without building work.
Keeping drains clean prevents blockages, bad smells and bigger faults. The key is choosing the method according to where the dirt is and not overusing chemicals.
In this guide we explain the home methods that work, the ones to avoid and when you need a professional.
Home methods for cleaning drains
1. Clean grates and plugs
Hair, soap and food scraps collect right at the entrance of showers, washbasins and sinks. Removing them often prevents most blockages.
2. Take apart and clean the trap
It is the curved part under the washbasin or sink. Place a bucket underneath, unscrew it, remove the grease and debris and refit it.
3. Hot water
Pouring hot water down the drain helps flush grease away before it solidifies. It is a good habit for the kitchen sink.
4. Bicarbonate of soda and vinegar
It works as a gentle maintenance clean and helps reduce odours. It does not clear an established blockage.
5. Plunger and drain snake
The plunger pushes and pulls the blockage; the snake reaches obstructions a little deeper. Use them carefully so as not to damage the pipe.
What to avoid
- Harsh chemical drain cleaners: they can damage pipes and seals, are dangerous if mixed and harm septic tanks.
- Pouring oil down the sink: it solidifies in the pipe and forms plugs.
- Using the toilet as a bin: wet wipes, cotton buds or sanitary pads are among the most common causes of blockages.
- Forcing it with wires or makeshift tools, which can puncture or dislodge the pipe.
You will find more details in common mistakes when trying to unblock pipes yourself and in which materials usually cause blockages.
When you need professional cleaning
- Water drains slowly in several drains at once.
- The blockage comes back soon after clearing it.
- There is gurgling or persistent bad smells.
- Water comes up through one drain when another is used.
- It is a residential community, a business or an old building with frequent problems.
What professional pipe cleaning involves
Pressure cleaning: high-pressure water is introduced from manholes or access points to remove grease, sludge, sediment and stuck-on residue. The pressure is adjusted to the type and condition of the pipe. More information on our pressure cleaning service page.
Milling: when there is limescale, cement or embedded roots that water cannot remove, they are eliminated with pipe milling equipment.
Camera inspection: if the problem keeps coming back, a domestic pipe inspection shows whether there is a break, subsidence or a section with the wrong slope.
Frequently asked questions about cleaning drain pipes
What is the best way to clean drain pipes at home?
Combine mechanical cleaning of the trap and grate with hot water on a regular basis. Bicarbonate of soda and vinegar work as gentle maintenance, but they do not clear established blockages.
Are chemical drain cleaners a good idea?
It is best to avoid them or use them very sparingly. They can damage pipes and seals, are dangerous if mixed and harm the way septic tanks work.
How often should drain pipes be cleaned?
Kitchen and bathroom traps and grates should be cleaned regularly. The main network is cleaned professionally when there are symptoms or, in residential communities and busy businesses, periodically as part of a maintenance plan.
What is pressure cleaning of pipes?
It is professional cleaning with high-pressure water that removes grease, sludge, sediment and residue stuck to the inside of the pipe. It is done from manholes or access points, without building work, and the pressure is adjusted to the type and condition of the pipe.
What is done if the pipe has embedded limescale or roots?
If pressure water is not enough, milling is used, which removes encrustations, roots, cement, limescale and residue stuck to the inside of the pipe with specific equipment.
Clean pipes, no blockages or smells
Home methods are fine for day-to-day maintenance; when the dirt is in the network, professional cleaning is needed.
At Limpiezas Domingo e Hijos we have been working on drainage networks for more than 15 years in the Marina Alta and La Safor, from Benidorm to Gandía. We clean and unblock pipes with pressurised water and milling, and if the problem keeps coming back we locate it with a camera. You will find all the details on our unblocking and pipe cleaning pages for the Marina Alta and La Safor, and on our maintenance contracts for residential communities and businesses.
Call us on 672 450 224 or 966 447 070, or request a quote.