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115mm Deep Flow Guttering

We keep plastic half round deepflow guttering and downpipes in black and white with speedy next day delivery for all orders placed before 12pm. We can also supply 6″ and 8″ guttering so please contact us if you require a larger size.


More Information the Deepflow Design Product Range:

Our wide range of high capacity gutter solutions are perfect for inclement conditions and house designs that channel a lot of water towards the gutter.

Here, we'll look at the design in a little more detail - with a description of what the product is, some benefits, how they compare to other designs (including a half round gutter, ogee and cast iron), a few frequently asked questions, and why we're certain we're the best source for your gutter supplies.As a homeowner, it's important to be prepared for problems caused by heavy rainfall. The weather has become one of the leading sources of household damage in the last few years.As a matter of fact, the last couple of years have been the wettest years on record and unfortunately, the forecast for the next seventy years predict things are going to get wetter!These weather conditions could really take their toll on homes' exteriors. A functional rainwater system and downspouts can help you avoid foundation erosion, damaged fascias and soffit boards, flooded basements, and other water-related issues.The average rate of flow for standard guttering is 0.9 l/s, which puts the guttering, fascias, and potentially even the soffit boards under pressure if rainfall levels continue to rise. This is often the case if you've got large roof areas that channel a lot of water quickly.On the flip side, a deepflow gutter has an average rate of flow of 1.9 l/s, helping your house cope with the increased rainfall and protect your house from overflowing guttering, that can damage your house.Before the next storm arrives, it's a great idea to consider how your house will tough it out, which brings us to the subject of deepflow gutter rainwater systems.Deepflow is not the largest of the plastic guttering sizes. Instead it is just a little larger than the standard profile, and is commonly used on large domestic roofs. For industrial uses we would recommend a size from the industrial range also available on EasyMerchant.

What is a Deepflow Gutter?

A deepflow gutter system incorporates a deep round style gutter with a high capacity, which is perfect for regions prone to high rainfall.

Houses with steep or large roofs really benefit from deepflow systems. The deep design enables the number of downpipes to be minimised. Black guttering is the most commonly purchased colour in this range.Features include:
  • Both 65mm and 68mm square and round downpipes can be connected to the gutter system
  • Semi-elliptical profile
  • High rate of flow- perfect for large roofs
  • Durable and strong (even more so than cast iron)
  • Speedy, user-friendly installation
  • Fewer drainage runs and outlets

Why Choose a Deepflow Gutter?

  • Same Width, High Capacity

This type of gutter is hardly any wider than normal systems, but approximately 20mm deeper. And while that is not more than an inch, it makes a big difference in terms of capacity.This design has more than twice the flow rate of a regular gutter. But as a result of the rather small increase in the measurements of the gutter, it looks ideal for any typical domestic installation - perfectly accompanying your fascias and soffit boards.Although high capacity guttering also comes with the option of an extra-large 80mm downpipe, this is only necessary for steep pitched or large roofs.Considering that the outlet is hooked up to a standard 68mm round downpipe (the standard for plastic and cast iron), most homeowners prefer this option, which is perfectly fine for almost all domestic installations.
  • Various Styles for Design Enthusiasts

Obtainable in all standard colours and an eye-catching finish, more and more house owners are choosing deepflow guttering - even over more ornate designs like Victorian ogee and cast iron.If there's a colour or design you can't see here on the EasyMerchant website, get in touch with the team and we'll track it down on your behalf.
  • Right Gutter Capacity in High Precipitation Areas

Climate conditions in the UK are becoming extreme. The floods experienced this year were unexpected, and many gutter installations failed because of the high volume of water coming off of the roof and lack of maintenance.Homes fitted with properly maintained a high capacity deepflow gutter system will certainly be well prepared to handle high volumes of rainfall if history repeats itself.

Deepflow gutter FAQs

Why does deepflow use the same size downpipe as a half round gutter?

The size of your down pipe isn’t really a factor when determining which gutter type to install, considering that all down pipes have a higher capacity than the horizontal lengths to which they connect.

This is because the rate of flow of the water in the pipe, with the help of the enclosed nature of the pipe and gravity, is higher than the flow rate of the gutter itself.

Does a deepflow gutter system need an additional fascia bracket compared than other gutter systems?

Although deepflow has a much higher flow rate than other systems (such as standard half round designs), each fascia bracket has been engineered to allow them to be spaced the same distance apart as square gutter and half round brackets - 1m apart.

Please note that this is the recommended maximum spacing for each fascia bracket - if you live in a region where heavy snowfall is a likely occurrence, reduce the distance between the each fascia bracket.

Deepflow guttering vs. standard half round guttering: which one is better for my house?

The guttering profile you should go with depends on the environmental conditions, building requirements and the type of job at hand.

For most homes standard half rounds will do, but if you’ve a steep or large roof, or living in a high precipitation area, then deepflow guttering is the ideal choice.In spite of having a similar width, a deepflow system can carry twice the volume of water compared to standard half round systems.

What is the carrying capacity of deepflow?

Deepflow gutter capacity varies between 2.05 l/s and 5 l/s, which is approximately twice that of a standard half round or cast iron guttering system.

Not only is the carrying capacity of gutter systems determined by its size, but also by the position of the down pipes in relation to the gutter and the fall to which it is laid.If needed, installing a 80mm down pipe instead of a 68mm can increase the how much rain a deepflow guttering system can handle even more. Consequently, it can cope with the water from steep pitched or large domestic roofs.

Can I purchase deepflow parts to install myself?

If you already have all the necessary tools and want to make deepflow gutter installation a DIY job, here is a step-by-step installation guide:

  1. Set the gutter height by laying down a straight batten on the lowest profile of the roof.
  1. Place the fascia bracket under the batten so that they’re touching and mark the screw holes.
  1. Drill pilot holes and Fix fascia brackets with countersunk screws or roundhead screws.
  1. Fix fascia clips at 500mm centres. For the best flow rate fix to a fall of 1:600 or nominally level.
  1. Support all corner angles by installing fascia brackets at a maximum of 150mm from all sides.
  1. Before fitting together gutter joints, apply a sealant to the central grooves to both sides of the ribbed rubber gasket.
  1. Place the lengths into the fascia brackets without clipping the front down. Place the union on the back of the gutter then fix the gutter in the fascia brackets. Apply some upward pressure to the union clip, while pulling the front gutter’s edge into the union clip.
  1. Drill a pilot hole and fasten the joint union to the fascia board.
  1. Repeat stages five and six and join the gutter length to the one previously fixed. Make sure there is a 3mm expansion gap between the gutter ends.
  1. Drill a pilot hole and secure outlets to the fascia board.

Does a deepflow gutter need to be cleaned?

While your gutters might be out of sight - they shouldn't be out of mind. Clean gutters are an essential part of maintaining your property.

If you love your house and want to safeguard it from damage, you should clean your system at least twice annually. A guttering filter can help with this. A guttering filter is designed to fit over the run - allowing leaves and debris to blow away - but not preventing water entering.If you don’t feel that you can do the task or are afraid of heights, you can always hire a professional cleaning service at a reasonable cost.However, gutter cleaning isn’t such a complicated job, and if you learn how to clean your system properly, you’ll save a considerable amount of money.

Order EasyMerchant’s 115mm Deepflow Guttering Online

We keep plastic deepflow guttering and downpipes in white and black with quick next day delivery for all orders placed before noon. We can also supply 6″ and 8″ guttering so please contact us if you need a larger size.

Why choose us?

You won't be surprised to discover that we think we're the best gutter supplies and online materials supplier anywhere in the UK - but we back that claim up with solid customer support, outstanding prices, and a wide range of exceptional quality products.You're welcome to get in touch with us here at EasyMerchant any time - either on our email address, instant messenger service, or on the phone. It doesn't matter if you're looking at products and need a little advice, working on a project and need some installation support - or even planning a job - we're here to offer advice.Of course, we can confidently recommend any product we provide - because we make sure they're all manufactured to the highest possible standard and provided by suppliers we know we can trust. Everything you buy from EasyMerchant will come with the appropriate kite mark, so you can be certain it'll be safe and long-lasting.You can also be confident that you'll get an amazing price from the EasyMerchant team too. We negotiate the best prices from our suppliers because we buy our full product range in enormous quantities. Big discounts for us doesn't mean money in our pocket though - instead, it means we can pass bigger savings on to you.We're in the trade - so we understand how important it is to be able to source a wide range of great quality products at realistic prices.