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Ask the experts - Product specifications

Steve Carter, Specification Manager for Polypipe Water Management Solutions (WMS) discusses product specifications.

How have recent flooding events changed the
specification of SUDS products?

How have recent flooding events changed the
specification of SUDS products?


Since the UK experienced significant flooding in 2007, the issue of controlling excess surface water has been on the agenda. For example, the Water Framework Directive is starting to make an impact, although many consultants are unsure of how this will affect the market. People are picking up the relevant information from their industry, so they’re asking for clarification. Ultimately, there is a thirst for knowledge in the market and as an experienced manufacturer we can help to fill that gap.

What market developments do you believe will
create the opportunities for the specification of
SUDS products?

What market developments do you believe will
create the opportunities for the specification of
SUDS products?


For a number of years the focus has been on storing excess surface water run-off. The industry is fairly up to date on this, but the next challenge is dealing with water quality and we could see a knowledge gap appear in the market as people need to develop an understanding of the legislative requirements. The Floods and Water Management Act and WFD will undoubtedly lead to further opportunities for SUDS, although the focus at the moment appears to be on above ground ‘soft’ solutions and there needs to be more promotion of engineered, below ground systems.

How can manufacturers add value to
potential customers?

How can manufacturers add value to
potential customers?


A broad portfolio of products is a definite advantage as you can provide the most appropriate solution to meet the requirements of a project using a holistic approach. For example, we offer the widest range of water management and SUDS products from attenuation and soakaway using large diameter pipe or modular cells, to rainwater harvesting systems and stormwater treatment. Bespoke products such as catchpits and manholes are a vital element as standard products may not meet the requirements of some challenging projects. Our in-house Fabrications Team works closely with our Technical Engineers to manufacture bespoke products off-site, which are then delivered to the project ready to install.

Is there enough focus on the whole project cost?

Is there enough focus on the whole project cost?


The perception that people are tuned in to the idea of ‘whole project’ cost can sometimes be different from the reality. There can often be a disconnect between the buyer and the person responsible for installing the product, so there is a need to understand the consequences of specifying certain products. By focussing on unit costs, other savings across areas such as less requirement for heavy plant and reduced installation times can often be missed. Projects rarely run over budget due to product unit costs, it’s typically because the job has taken longer to complete, so any area where time on-site can be saved should always be considered.

Are there any myths surrounding the specification
of plastic products?

Are there any myths surrounding the specification
of plastic products?


It’s fair to say that people will always have a preference, but the benefits of plastic over rigid materials such as concrete are clear – quicker and easier to install, handle and store, with less requirement for heavy plant on-site and no need for on-site construction. People need to get around the idea of product manufacturers only being interested in the hard sell. We are often at the forefront of changes and best practice within an industry and can call upon technical experts who can help both consultants and contractors. For example, we completed a scheme recently where the contractor was originally only interested in using concrete manholes. We recommended they bought one plastic manhole and then speak to his installation team to get their feedback. The feedback from the installation team was so positive, that the contractor now only uses plastic manholes.



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Ask the experts - Product specifications

Name: Steve Carter
Job Title: Specification Manager, Polypipe WMS
Currently Responsible For: Providing the latest product and service advice for the specification of Polypipe WMS products, working closely with consulting engineers, specifiers and contractors.