Waterproofing Solutions

As an independent company, we can choose the appropriate products to suit the large variety of properties we are called on to waterproof.

We can save money and protect clients with expert basement waterproofing design.

MacLennan install external and internal basement waterproofing in the London, Wiltshire, Hampshire, Dorset, Surrey and surrounding areas through out the UK.

We design and install for new build and remedial projects. We have as regular customers numerous Architects, Engineers and Building contractors.

What are you looking to Waterproof?

New Builds

New Builds

A new build residential structure or basement of any construction & size

Existing Structures

Existing Structures

A basement / cellar conversion under an existing property

Remedial Work

Remedial Work

Solutions for leaking, flooding or cracked below ground structures / basements



Concrete decks above basements or flat roofs

Commercial Buildings

Commercial Buildings

Hotels, Office blocks, Stadiums, Carparks & Multi story basements

Special Projects

Special Projects

Tunnels, Tanks, Vaults, Reservoirs & other specialist projects

MacLennan Design, Supply and install.

We add value to our clients by giving them full design and technical support from the beginning to the end of the project.

Get in touch with our team today!

Contact Us

We design and install for new build and remedial projects.


MacLennan take over full responsibility and liability for the basement waterproofing design. This is backed by specific waterproofing professional indemnity insurance.


MacLennan then supply and install the deck and basement waterproofing so there is no split responsibility this is backed by our full products insurance. This is not available to most waterproofing contractors to give.


This is supported by a GPI insurance, but you should never rely on the GPI insurance alone. It is the products insurance that gives you the protection you need. The waterproofing system is then serviced and maintained by our NICEIC qualified technicians.


All of this service is protected by our FSA regulated insurance. We are one of the very few who can offer this level of protection. We train all staff in-house and do not use sub-contractors for basement waterproofing solutions.


If it needs waterproofing we know the best system for the job and we are qualified to design and install it for you!


We have as regular customers numerous Architects, Engineers and Building contractors.

Here is an example video showing a typical MacLennan Build up.

MacLennan’s systems are built bespoke for every project, Designed, Supplied and Installed by MacLennan.

Our Projects

We have been entrusted with significant contracts such as The Houses of Parliament, Kia Oval, Olympic Park Media Centre, Hilton Hotels, Barratt Homes Head offices, hundreds of multi million pound high end residential properties.

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Get in touch!

Ready to start a project or require more information about us?
Call us about your project or problem and we will be happy to help.

Call us today on:

0845 658 7777
Or email us here