When it comes to managing surface water around your home or driveway, choosing the right channel drain makes all the difference. At Trusted Building Supplies, we stock a complete range of A15 Standard Channel Drains, B125 Standard Channel Drains and Threshold Channel Drains to suit every type of project. But what’s the real difference between them, and how do you know which one to buy?
Understanding Channel Drain Load Classes
Channel drains are graded by their load class, which tells you how much weight the system can safely handle. The two most common types for domestic and light commercial use are A15 and B125.
- A15 Channel Drains – Designed for areas with foot traffic only, such as patios, garden paths, terraces and around swimming pools.
- B125 Channel Drains – Made for driveways, garages, courtyards and areas where light vehicles regularly pass or park.
The A15 rating means the channel can handle loads up to 1.5 tonnes, while B125 can withstand up to 12.5 tonnes. Choosing the correct load class ensures your system remains durable and effective, preventing cracks or collapse under pressure.
When to Use A15 Channel Drains
A15 channel drains are perfect for light-use areas where only pedestrians will walk. They’re lightweight, easy to install and often made from strong recycled plastic, making them a cost-effective and sustainable choice for patios, garden paths and around threshold doors. Their slimline design blends neatly into paved areas, helping to collect rainwater efficiently without disrupting your garden’s appearance.
When to Use B125 Channel Drains
For heavier-duty use, B125 channel drains are the better option. They’re built for driveways, garage entrances and light vehicle access areas, providing reliable surface water drainage under greater load. Made from robust recycled materials, B125 systems are a practical and durable choice for both domestic and small commercial projects where vehicles are regularly driven or parked.
What About Threshold Channel Drains?
If you’re installing drainage around doorways or patio entrances, you’ll want to look at our Threshold Channel Drains. These are specially designed to sit neatly at door thresholds, preventing water from entering your home during heavy rainfall. They’re ideal for properties with bi-fold or sliding doors opening onto patios or decking.
Choosing the Right Channel Drain for Your Project
When deciding between A15 and B125 channel drains, consider how much traffic the area receives and what type of surface you’re working with. For patios, garden areas and pathways, A15 is typically the best fit. For driveways, garage fronts or areas with regular vehicle use, B125 provides the strength and durability you need.
Whichever you choose, all Manthorpe Drive Drain products available at Trusted Building Supplies are made from 100% recycled plastic and are fully recyclable. They clip together easily, include secure locking gratings and can be finished neatly with matching end caps and corner units for a professional look.
Shop Channel Drains Online at Trusted Building Supplies
From simple garden drainage to heavy-duty driveway systems, Trusted Building Supplies has everything you need to manage surface water effectively. Explore our full range of A15 Channel Drains, B125 Channel Drains and Threshold Channel Drains today and keep your outdoor spaces safe, dry and looking their best.