Innovative Drainage Solutions & Quality Assured Installation

SEL Environmental Ltd     Tel: 01254 589987     Email:

Design Review

The goal of SEL has always been to identify the most cost effective design possible for our customers. Using industry leading software we can undertake catchment analysis and offer advice on drainage layouts, the positioning and sizing of attenuation and providing criteria for flow restrictions. This service also has the benefit that pipework and chamber sizes can be reduced.

Value Engineering

SEL believe Value Engineering should be more than simply an exercise to reduce costs. Value, quality, maintenance and life expectancy are key factors we use to determine which solutions will best meet the needs of the project. Our engineers and design team carefully consider all aspects of the project when making value
engineering proposals. We thoroughly explain all options in the following areas; Cost reduction: Suggestions of alternatives to specified materials or systems; Value added: A higher quality product that may or may not carry a higher price but will bring added value to the project; Whole life cost analysis: During our review of products and systems, we typically identify options that will allow us to strike the best balance between initial construction cost and long-term operational costs; Ongoing Maintenance: Recommendations of systems and products that can produce long-term savings through reduced maintenance costs

Design & Specification

There are a number of reasons a drainage design or product may be specified; The designer has experience with a particular product; The designer works with the specific manufacturer; A buyer has a preferred list of suppliers; Performance based specifications. When reviewing or proposing a scheme SEL is committed to; Identify a cost effective design; Produce a simpler solution; Optimise procurement; Ensuring products specified are fit for purpose.

Management & Consulting

SEL are very experienced in the management of SuDS installations and can provide a valuable liaison between Engineer, Client, Supplier and Groundworker. Working closely with all parties mentioned SEL can coordinate all aspects of a SuDS installation, ensuring designs have buildability and are correctly quantified (taken-off), realistic budgets are produced, manage deliveries and labour, overcome 'design oversights' that become installation problems. This service can be invaluable on a complex installation such as a podium deck.

Supply & Installation

SEL have a very experienced, fully trained specialist team of site installation engineers, all of who have many years experience installing SuDS systems across the UK in all aspects of construction. They have invaluable experience of all membrane types (PP, LLDPE, HDPE) and most SuDS systems currently being promoted. All works are undertaken with a commitment to CIRIA best practice and under a strict Quality Assurance protocol as part of our ISO9001 accreditation. In support of all our installation works we can provide method statements, risk assessments, technical support and Cad details. All our operatives are CSCS certified.

Service & Support

Identify the drivers and design criteria of the project
Review concept design layout options and assess which best meets the requirements of the customer and end users
Pursue the best balance between user requirements and cost
Project management through the project cycle
Specialist installation saves time and manpower on site
Commitment to CIRIA best practice with ISO9001 QA
Onsite technical support
Post installation maintenance packages available

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