What are the most common causes of blocked drains?

Blocked drains can occur for several reasons, including:

Build-up of grease, fat and food waste in kitchen sinks
Hair and soap scum accumulation in bathroom drains
Flushing of wet wipes, sanitary products or excessive toilet paper
Tree root intrusion into underground pipes
Collapsed, cracked or misaligned pipes
At London Drainage Facilities Ltd, we use advanced techniques like CCTV drain surveys to identify the exact cause and provide the most effective solution.

Is it worth upgrading from a vented to an unvented cylinder?

For many homeowners, upgrading offers better water pressure, improved energy efficiency, and valuable space-saving benefits. If you’re renovating or modernising your home, an unvented system is often a smart investment.

Can I use an unvented cylinder with any boiler?

Unvented cylinders work well with system or regular boilers, but not with combi boilers, as combi systems don’t require a hot water cylinder. Your installer will help determine the best setup based on your current system and hot water needs.

How much maintenance does an unvented system require?

Unvented cylinders should be serviced annually by a qualified engineer to ensure they remain safe and efficient. Regular maintenance helps prevent issues and extends the lifespan of the system.

Do I need good water pressure to install an unvented cylinder?

Yes, because unvented cylinders rely on mains pressure, it’s important to have a strong and consistent water supply. A qualified installer will assess your pressure levels during the initial survey to ensure suitability.

Are unvented systems safe?

Yes, unvented hot water cylinders are very safe when installed and maintained correctly. They are fitted with multiple safety features such as pressure relief valves, thermostats, and expansion vessels to prevent overpressure and overheating.

What is an unvented hot water cylinder?

An unvented hot water cylinder is a sealed system that connects directly to the mains water supply. It delivers hot water at high pressure without the need for a separate cold water tank in the loft, making it a more modern and space-efficient solution.

How much does scheduled drain maintenance cost?

Our scheduled drain maintenance services include unlimited free of charge callouts to all serviced drains, which gives our customers great peace of mind when it comes to knowing that an allocated annual budget for drainage work is in place for any work that is required. The costs of our drain maintenance service varies depending on...Continue reading→

Can drain maintenance help prevent emergency blockages?

Yes, regular drain maintenance is the most effective way to prevent emergency blockages. By routinely clearing your drains, we remove build-up before it becomes a major issue, reducing the likelihood of sudden blockages, overflows and potential property damage.

What are the benefits of signing up for a drain maintenance programme?

Our drain maintenance programme offers a proactive approach to keeping your drainage system in peak condition. Benefits include: Unlimited free callouts for serviced drainage Preventative maintenance to avoid costly repairs Improved hygiene by reducing odours and bacteria build-up Extended drain lifespan by minimising wear and tear Fixed costs, allowing you to plan your budget with...Continue reading→

What is included in a drain maintenance service?

Our drain maintenance service includes: High-pressure water jetting to clear build-up Electro-mechanical coring to remove scale and debris A full inspection of your drainage system Identification of potential issues before they escalate A detailed report on the work carried out and any recommendations for future care

What are the most common causes of blocked drains?