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Land Drainage Pipes & Coils

We keep a vast stock of land drainage pipe and coils, all are available to deliver to you with a speedy delivery service. If there’s anything you require that we don’t have listed, then feel free to call us and we’ll source it for you.

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More information on land drains and land drainage products - from EasyMerchant:

Here at EasyMerchant, we've got a massive range of land drain products - suitable for an equally massive range of drainage type applications. 

We've tried to answer some common land drain questions here - but if there's anything we don't answer for you, or there's a product you need and you can't see it; get in touch!

Our expert customer service team understand your trade - and they've got an outstanding level of knowledge when it comes to land drains, land drain pipe, and surface water dispersal.

What is a land drain and what are land drains used for?

Land drains are often referred to as 'perforated drain pipes' - and they're used wherever there's a danger of the ground becoming waterlogged. They're one of the most popular types of surface water drainage - especially when twinned with a soakaway crate system.

Since they have such a huge range of uses, you'll find land drains in commercial, agricultural, domestic, and commercial settings. Typically, the ground will become waterlogged when there's a layer of impermeable soil - such as clay - but waterlogging can also occur when there's a sudden or consistent amount of rain.

What exactly is a land drain pipe?

A land drain pipe is a product that's specifically designed to clear water away in areas where the surrounding environment doesn't allow for natural drainage.

Land drain pipes are made of PVC - and they come in a wide selection of diameters and lengths depending on the application and how much water you need to disperse. Our most common sizes are 25m and 50m coil lengths - offering long lengths that cover plenty of ground - while also being lightweight and cost-effective to ship.

The perforations in the piping design mean a land drain pipe / land drainage system is designed to allow water to drain away from problem areas - often by directing excess surface water towards a storm drain.

How does a land drain pipe work to disperse surface water?

You'll notice we've already mentioned that a land drain pipe is perforated - which means it lets water in when the surrounding space is not capable of absorbing any more (either because it's already saturated or it's non-permeable). This makes it ideal for reducing surface water.

The thing is, a land drain doesn't just let water it - it's also designed to allow water to escape - but the surrounding ground has to be capable of taking the water for this to happen. In effect, this means that a land drain pipe doesn't just 'move the problem' - filtering water away to another point (where it could subsequently become waterlogged) - instead, it naturally disperses excess water into parts of the ground that can take it.

Of course, if you're installing a land drain in an area where a lot of the surrounding soil is impermeable, you may wish to move the problem - which again is possible, since the drain will flow virtually the same as a solid piping if the environment around it won't allow for draining. This means you can direct water in a local water source (assuming you have permission of the Environment Agency to do so) - or you may wish to direct water into a soakaway system for even better dispersion. 

Where should a land drain pipe be installed for maximum effectiveness?

A land drain pipe is designed to be installed where surface water causes a problem - often when soil has performed poorly in a percolation test.

As well as being installed where surface water is an issue, you should also aim for a gradient of 1 in 150 to ensure the water flow moves towards an area capable of handling it at a reasonable rate. As previously mentioned, you should always check with the local authority if you're moving water off your land - water courses are often protected by local by-laws and you could face large fines if you install drainage that interferes with one.

Your local authority may also give you a maximum flow rate that details how much water you can deposit into a storm drain. Storm drains of often electronically monitored - and as well as fines if you exceed this flow rate, you stand a chance of backing water up into your land and facing the problem of surface water elsewhere.

Land drain system installation tips from our in-house drainage experts

To make sure you land drainage is effective, it needs to be correctly installed. Whether you're working with sports fields, gardens, car parks, or industrial areas - the principles are largely the same:

Make sure no sediment enters the piping or soakaway

You should always try to ensure no sediment or soil particles enters the drainage piping - either during installation or when the piping is in-situ. You've got a couple of options for making sure this happens. Firstly, you can use a catch-pit (an empty chamber with an inlet pipe) surrounded by gravel backfill - or you may decide to use a textile membrane installed around 100mm above the pipe.

Aim for a 1:150 gradient

Generally, you should be aiming for a gradient of around 1:150 when you install your land drain pipe. If you wish to disperse water more quickly, it's a good idea to up the diameter or the pipe, rather than increasing this angle. If you get towards a 1:100 angle, you may find the flow rate becomes too much and the disposal point is overcome.

Plan the job carefully

You should aim to position the land drain no more than 2.5m away from the area you're trying to drain - and generally, closer is always better. For maximum draining efficiency, people will often go for a herringbone pattern - essentially zig-zagging back and forth

Always high quality quality products when you shop for materials with EasyMerchant

Our perforated land drainage systems are also kitemarked to BS 4962 and are manufactured from uPVC or HDPE. We always ensure every product we stock meets or exceeds strict Birtish Standards - so you can be confident that when you walk away from your underground drainage job, you're not going to have to go back any time soon.

Always exceptional prices from EasyMerchant - no matter how much you're ordering

Have you considered buying drainage products, only to find the advertised price only applies if you're buying enough to drain water from an area the size of the Lake District?! 

If so, you're not alone - 'bulk' prices often mean that you'll only make savings if you're buying huge quantities. 

At EasyMerchant - we do things a little differently

We buy our products in very large quantities - and by doing so, we get the best possible prices from our suppliers and manufacturers. This means we can pass on outstanding prices for every order - even if you're buying a single coil to install drainage in a small garden. We promise you'll always pay our lowest possible price - no matter how much you need.

Knowledgable customer service from the EasyMerchant team

Our customer service team isn't here to just help you find the products you need - they're on hand whenever you need them to answer questions, offer advice, and even help if you run into a problem when you're using one of our land drainage products.

Up to your knees in a waterlogged trench and run into a problem? Give us a call and we'll do our best to help out. The same applies if you're browsing our website and have a question about which type of land drainage product is the most suitable for you - our team understand the trade, and if they can't answer your question immediately, they'll find out the answer and come back to you ASAP.

Need land drainage advice? Get in touch with our team

Give us a call, send an instant message, or type a quick email - and we'll get back to you as quickly as possible.