Graf UK Stormwater Management B2B

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Upgrade Your Domestic or Commercial Project with the UK’s BEST Stormwater Management Systems

Build Smarter & Greener with GRAF’s Innovative, Reliable & Eco-Efficient Stormwater Solutions

  • Experience the power of our cutting-edge systems each designed to expertly tackle stormwater attenuation
  • Lead the curve with our innovative systems that require 4x less storage space on site and up to 4.5x fewer deliveries
  • Benefit from over a decade of experience in tank installation and our commitment to minimal disruption and seamless project execution
  • Plus, we’re trusted by our customers for bringing superior craftsmanship, sustainability, and innovation to any project

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Our helpful team are here to answer your queries on pricing, orders & any questions about our amazing products

Click HERE to Send an Enquiry

Our helpful team are here to answer your queries on pricing, orders & any questions
our about amazing products

Let GRAF Help You Elevate Your Project

We’ve got the very best innovative and
environmentally friendly solutions for your construction needs

Efficient and Compact Solutions

Elevate your project’s eco-efficiency with our EcoBloc Maxx attenuation tank. It boasts a compact, stackable design that requires up to 4x less storage space and 4.5x fewer deliveries, dramatically simplifying installation and saving valuable resources.

Decades of Industry Experience

You’re in good hands with GRAF. With over 10 years of experience in executing projects from concept to completion, we ensure seamless installations with minimal obstruction, earning trust and satisfaction from numerous clients.

Sustainable Stormwater Management

Our innovative stormwater solutions are designed with Sustainable Drainage Systems (SuDS) in mind. Products like the EcoBloc Light are perfect for landscaped areas, combining efficiency, aesthetics, and environmental responsibility for a brighter, eco-friendly future.

Pioneering Attenuation Technology

Discover unparalleled performance with our systems. Engineered for easy installation and featuring heavy-duty loading capacity, these groundbreaking solutions offer long-lasting, hassle-free stormwater management along with easy inspection and upkeep.

For a full breakdown of our product range, including specifications & more, get an INSTANT copy of our Info Pack

Click HERE to Get Your Info Pack (It’s FREE)

What Our Customers Say…

Have a read of our reviews – they really do speak for themselves!

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Our helpful team are here to answer your queries on pricing, orders & any questions about our amazing products

Click HERE to Send an Enquiry

Our helpful team are here to answer your queries on pricing, orders & any questions
about our amazing products

Take A Look At Our
Stormwater Management Solutions

EcoBloc Maxx

Experience efficient stormwater attenuation with EcoBloc Maxx. Its compact, stackable design reduces installation times and space needs.

Choose EcoBloc Maxx for optimal performance and sustainability.

EcoBloc Light

Ideal for landscaped areas, EcoBloc Light combines efficiency and aesthetics.

This compact, eco-friendly system provides advanced, SuDS-optimized stormwater management.

EcoBloc Flex Inspect

EcoBloc Flex Inspect offers a long-lasting, hassle-free stormwater solution.

It features easy maintenance and a heavy-duty design, making stormwater management seamless.

Rain Bloc

Rain Bloc is an easy-to-install solution for durable and efficient SuDS.

It sets the standard for hassle-free stormwater management.

Want to learn more about our products?

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Click HERE to Get Your Info Pack (It’s FREE)

Check Out Our FAQs

What is the purpose of a stormwater attenuation tank?

It is to provide a facility so that the storm system is not overwhelmed.

It is a facility to catch water and store it and will be released at a controlled rate, rather than the extra storm water just going down the pipe at one time.

It is a way to hold, store and release water at a controlled rate to not overwhelm drainage systems.

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What information do you need in order to size a stormwater attenuation tank?

An attenuation tank holds excess water, receiving it through multiple inlets and regulating its release through an outlet with a control device. It ensures the downstream drains are not overwhelmed during heavy storms.

The design considerations include rainfall, surface area, and climate change factors.

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What information do you need in order to size a stormwater attenuation tank?

To appropriately size a stormwater tank, we need specific dimensions (length, width, height), the prospective location, and ideally a drainage drawing.

These details help propose a suitable solution based on the available space and usage requirements.

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How close can stormwater attenuation tank be to a building?

Unlike a soakaway system, they can be much closer to a building.

The main thing is that the building load or the foundation load should have no effect on the tank. If you were to draw a 45-degree angle from the foundation, that line should not cross your tank.

This as well depends on the tank depths. But they can be close to the building.

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Does a stormwater attenuation tank need maintenance?

Yes, like most systems, stormwater attenuation tanks require regular inspections to maintain optimal performance and address issues like blockages.

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What are the typical problems with a stormwater attenuation tank?

Common issues with stormwater attenuation tanks include the initial cost, maintenance requirements, exposure to the elements, and potential blockages.

Regular inspections and maintenance can help address these concerns.

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Click HERE to Send an Enquiry

Our helpful team are here to answer your queries on pricing, orders & any questions about our amazing products

Click HERE to Send an Enquiry

Our helpful team are here to answer your queries on pricing, orders & any questions
our about amazing products

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