Quality driveway and patio products and accessories for homeowners
An unrivalled range of external hard landscaping products for public sector and commercial projects
Global expertise from projects spanning the globe
Our comprehensive range of block paving provides the perfect solution whether you are looking for domestic use or for larger scale commercial projects
End-of-line or non-standard colour products for driveways and patios
Bollards and street furniture for public spaces or commercial premises
Marshalls has supplied the construction, home improvement and landscape markets since the 1890s
Read about Marshalls' shared values; Leadership, Excellence, Trust and Sustainability
Access and read Marshalls' latest policies from the policy library
Executive profiles for the Marshalls board
Review Marshalls' corporate governance policy and committees terms of reference
Create Better Spaces & Futures for Everyone
Our business & what makes us different
Our commitment to the promotion of strong ethical, environmental and corporate social responsibility principles.
Our approach to managing risk to delivery strategic objectives
Marshalls' commercial business offers a huge range of products to suit a vast range of different specifications and requirements
Marshalls' domestic business offers homeowners the ability to create beautiful and practical outdoor spaces
Marshalls is committed to achieving the highest standards across all its operations
Discover the 12 emerging trends that will shape the built environment
Delivering our strategic growth objectives
Find out about our stance and policies on Human Rights
From living wages in the UK to elimination of child labour, find more about our work
Understand more about the work we do in climate change, water and biodiversity
Working against corruption wherever we do business
Working in a responsible way in all we do
All our guides, reports, policy statements and certificates
An A-Z of sustainability terms to help you understand the jargon
Use our online tool to calculate the carbon footprint of your chosen commercial products
Some of our favourite online sustainability resources
All of our modern slavery statements and reports
Share price data, latest regulatory news and reports
Review and download share price
Access and download annual & interim reports
Download and review presentations and speeches
Broker forecasts for Marshalls PLC
Details on Marshalls' latest AGM
Detailed review of Marshalls' financial performance
Key dates for the Marshalls financial calendar
Up-to-date regulatory news
Information about Marshalls' business model and company strategy
Our progress towards the achievement of our objectives
A list of our various advisers and registrars
View Marshalls' latest news, videos and social media channels
Access and download the latest press releases from Marshalls
Marshalls' latest news from across the Group
Latest job vacancies, FAQS and bios
View our latest vacancies, sign up for job alerts
Learn about what it means to work at Marshalls
Learn about how our employees are committed to our goals and values
Please enter a short phrase to see the results here
We found the following that match your phrase...
Sorry, we couldn't find anything matching your phrase
Smart design by Marshalls drives down the cost of a Permeable Pavement
Marshalls has announced the findings of a major project undertaken in collaboration with world renowned engineer Professor John Knapton, to review their market leading Priora permeable paving system.
Marshalls Priora is a SUDs solution which keeps paved areas clear of standing water without the need for complicated and expensive drainage systems – all the while providing an attractive, hard wearing surface suitable for any loading requirement. In addition, the Priora system cleanses water that flows through the structure and returns it straight back to the water table at source.
After 10 years of in situ experience with a zero failure rate, Marshalls embarked on a major study to ensure that the design advice offered was still up to date and relevant for modern applications. It employed a combination of laboratory test results, finite element analysis and Professor Knapton’s worldwide experience to arrive at a series of results. The findings have lead to a new series of design models which ensure best possible practice, reduce costs, provide environmental benefits, and truly reflect the requirements of today’s customers.
Marshalls’ new series of 9 sub base design models now provide more flexibility to clients than the 6 offered by the British Standard; the new models have been developed to reflect modern requirements, allowing a closer link between the required application and the level of recommended design. From light to heavily trafficked applications, and now including a heavy duty ports and docks option for static loads, the new models offer a more flexible approach than ever before. The Marshalls expert design team can now be even more prescriptive in their advice, and in the majority of cases, help to drive cost from the pavement structure.
Research was also carried out into the patented design of the Priora nib; 6 nibs per block each feature 8 separate faces which interlock in 3 different directions. This unique combination maximises rotational interlock between blocks – a feature which has been proven to reduce pressure on the sub base. Priora is the only permeable paving block on the market to demonstrate full rotational interlock through full scale testing, therefore providing clients with the confidence that they have a permeable paving system which will perform.
This rotational interlock enhances surface stiffness. Crucially, understanding this feature has allowed Marshalls to review and enhance the design of the sub base below a Priora pavement. The majority of new revised designs, which cater for all ground conditions, require shallower depths than Marshalls previous recommendations, therefore reducing costs and minimising time on site. By reducing the required amount of imported aggregate and, in excavation jobs, waste off site, the new options also offer enhanced environmental benefits – while still providing the required levels of hydraulic performance.
Chris Griffiths, Marshalls Water Management expert, said: “We worked with Professor Knapton on our initial Priora system design 10 years ago. Our own understanding of the technology has increased enormously since then, and this, combined with Professor Knapton’s worldwide experience, has given us a solid foundation from which to investigate new design methods.
“Marshalls Priora is the market leading permeable solution in the UK; in fact, since its launch Marshalls has sold enough Priora to pave nearly 500 football pitches, and enough water flows through these installations to fill over 1,100 Olympic sized swimming pools every year. However, we don’t believe in resting on our laurels and so we’re always seeking ways to improve our products and their performance.
“As the pending national SUDs standards seem to be preoccupied with the cost of installing a sustainable drainage system, it’s great that these new design models make a Marshalls Priora installation more cost effective than ever before.”
Professor Knapton said: “It’s been really interesting investigating why Marshalls Priora has performed so well over the past 10 years. Once we understood the rotational interlock advantage provided by the unique nib, it gave us the confidence to revise my initial design models which Marshalls have been using. The result is a new series of dependable, value-engineered models which truly reflect modern usage.”
For more information on Marshalls Priora, the product review, or issues surrounding water management, please visit www.marshalls.co.uk/wm or call Chris Griffiths on 01422 312083.
The cookies on this site are set to "allow all" to give you the best experience. If you continue without changing these settings, you consent to this. If not, click on "settings" to change your preferences.