MacLennan offer a RIBA approved CPD Seminar on Waterproofing Design and Installation.

Benefit from MacLennan's years of experience.

A photo of Ian MacLennan

Presented by:

Ian MacLennan CSRT CSSW

We can present to you live using Zoom or Teams & provide CPD certificates upon completion.

Subjects covered

  • BS8102 design considerations
  • Different types of Waterproofing
  • Legal precedence affecting the design
  • Failed systems
  • Remedial options
  • How to avoid pitfalls & much more!


Ian has been in the waterproofing industry for 30 years and is a consultant and designer for insurance companies, market leading architects , engineers , surveyors and contractors and has overseen the design and implementation of waterproofing systems for thousands of basements over the last 30 years.

Ian has written a great many documents on waterproofing and has been involved with the writing of industry codes of practice and is presently on the BSI committee rewriting the British Standard BS8102.

The MacLennan team design, install and guarantee waterproofing systems for new build basements, basement conversions, historic buildings, podium decks and basements suffering from flooding and leaking, often as a result of failed waterproofing systems.

Seminar overview

Ian will demonstrate the importance of good design, and how to comply with all industry standards and third party warranty holders such as NHBC.

He will explain how the design team should assess client and all stake holder requirements to deliver the correct grade of waterproofing.

He will also explain the requirements of the current British standards with regard to forms of waterproofing and how to and why to combine systems as well as the requirement for 2 forms of waterproofing.

Ian will show why basement waterproofing systems fail, and how to design so failures cannot and will not happen.

Ian will conclude with how to waterproof the concrete decks and buried roofs over basements and what you need to do to protect the client and the design team from failed waterproofing and the consequential liability and loss that comes with failed waterproofing.


"In terms of feedback that was one of the best seminars we’ve ever had. There’s no need to book any other waterproofing representatives as this company has gone top of my list of consultants for that field of work.”

Mark Coughlan / Furness Partnership

“Training was great, refreshed and improved our understanding of waterproofing systems and causes of failure, highlighted the importance of a single point of responsibility. Thanks to Ian."

Justin Ives / Managing Director / Spetisbury Construction Ltd.

"At the end we all had a better understanding of what waterproofing means and how to achieve it successfully. We have used Maclennan many times and have confidence in their advice, detail design, knowledge, support and installations.

Their positive, one stop approach is really refreshing and their willingness to take ownership and responsibility sets them apart from their competitors. ”

Kind Regards / Bernadette Maguire R.I.B.A Associate Architect

“Thanks once again Ian, everybody in the office has been commenting about your presentation. They all were amazed by your energy and the passion of your talk. Awesome!

To be honest, in some years of having been organizing these CPD seminars, none has caused such a pleasant post-talk atmosphere.

It was good to have you, I am tempted to invite you once a year just to refresh the conception of our monthly CPDs.”

Jorge Huft / Morgan Carey Architects.

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