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Primed Half Round Cast Iron Guttering

We keep a huge stock of 115mm half round cast iron guttering. We believe our prices are unbeatable. It comes primed ready to be painted, and shipped within 3 days.

*Please note all images are for illustrative purposes only. The products themselves may differ slightly from the images shown. Please rest assured all products supplied will be fit for purpose and as close a match to the pictures as possible.

More Information on the half round 115mm cast iron guttering components we have available here at EasyMerchant:

At EasyMerchant, we keep in stock a full range of 115mm (4" inch) half round cast iron gutters.

Today, seeing a cast iron gutter isn't as common as it was 50+ years ago, but the benefits of using it remain. It's a super long lasting product that has a lift expectancy of over 40 years (often much longer) when installed and maintained correctly. The only downside is that cast iron gutters will need to be repainted every once in a while. Obviously though, this is far cheaper than replacing them with new guttering!

Are you working on a listed house? If so, make sure you're fully informed

When a property or parts of it are listed, you have to make sure your plans for the gutter comply with the law surrounding the change of listed buildings. This is a really important factor and can protect you from legal repercussions. Should you own a building of historical interest, you are expected to get listed building consent if you want to change or modify it at all. These laws are in place so as to preserve both the character and longevity of those buildings. If the building had Cast Iron Guttering installed on it, then it may not be a good idea to replace with any alternative systems. So make sure to check first - even if you're just adjusting a system's fixings/accessories.

Do you have an old property and want cast iron to complete the look?

Even if your house is a period property, but does not have an conservation status, installing a cast iron guttering system will definitely look far more authentic than a modern plastic system. When we think of cast iron gutters, we tend to connect them with older properties - and many use bright, vibrant colours to add a splash of colour to older homes. Our cast iron gutters come ready to be painted. Most commonly they're painted black, white or grey guttering - but as long as you're staying within what's allowed by the local authority, you've got a huge range of options when it comes to painting or coating your cast iron gutter.

High Strength

  • The crystalline construction of cast iron provides the substance high durability and robustness. Once installed, cast iron elements resist impact damage in vulnerable areas, such as shopping centres, car parks and colleges.


  • Inherent corrosion resistance combined with a primed together with a painted finish guarantees cast iron components will need minimal upkeep throughout the whole period of the rainwater installation.


  • Complies with BS 460:1964 Cast Iron Rainwater Goods
  • Selection of round, square and rectangular pipes
  • Pre-finished cast iron May cut costs by 30 Percent and Setup time by 60 Percent
  • Extremely strong, durable and vandal resistant
  • Dimensionally accurate and Steady
  • Life expectancy in excess of 40 years
  • Cast iron is 100% recyclable

The Benefits at a Glance

  • Corrosion resistant when a protective coat is applied
  • Durable and strong
  • Impact resistant
  • Non-combustible
  • Non-toxic
  • Fully recyclable


  • A factory finished range, replicating traditional designs
  • Installation & Fixing
  • Minimal maintenance requirements

How should you go about fitting cast iron guttering pipes to your property?

Since there are different ways of mounting cast iron gutters on your property, it's vital that you begin by checking that the existing materials on the home are suitable for mounting the guttering to. If you're using rafter mounts, you should check the rafters are sound and capable of holding the weight of a cast iron system - and likewise with fascias.

Make sure you're positioning your gutter brackets to adequately support your cast iron system

Of course, it's always important to make sure you're supporting your cast iron system adequately - so check manufacturer recommendations to ensure you follow their guidance. 

Generally speaking, your first bracket should support the gutter 150mm from the end of the run - and following brackets should be mounted an intervals of between 600mm and 900mm.

Cutting and tidying cast iron gutter lengths safety

Naturally, you should measure at least twice to ensure you're cutting your cast iron runs to the correct length. When you're confident you've got everything marked out correctly, you can begin cutting - using either a circular saw with the appropriate cutting disc, or a tungsten tipped hacksaw.

It's vital that you use the correct PPE too - using both eye and breathing protection - and ear defenders if necessary.

When cut, you should always make sure you've cleaned away any burrs or loose swarf - as this can contaminate joins and leave the paintwork marked.

We buy our guttering components in bulk - and we pass our savings on to you

We're professional tradespeople, so we understand that you'll want the best quality materials - whether you're doing a quick DIY repair job on a cast iron gutter, or if you're fitting a number of properties with period fixings/accessories.

This is why we buy in bulk - and always pass our discounts on to you. As a result, you can be confident you're getting quality parts at the best prices - and, where possible, with next day delivery.

Our cast iron gutter products all meet or exceed strict British Standards for your peace of mind

When you buy any cast 115mm cast iron gutter component from EasyMerchant, you can be absolutely certain that it will meet or exceed British Standards.

Every gutter part we provide complies with BS 460:1964 Cast Iron Rainwater Goods.