An Innovative Basement Waterproofing & Green Roof System

The Timberwise team of waterproofing experts in the South West were called upon to put there waterproofing expertise to the test with a property in Newquay, Cornwall which had a requirement for a waterproofing system with a difference.
Green Roof System
Green Roof System
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April 4, 2011 - PRLog -- The owners of the property were looking to create a new basement room to complement the existing property and give extra living space in the form of a home cinema. Timberwise were required to provide a specialist waterproofing system to the inside of the newly formed room as well as providing a solution for a green roof. A green roof option was required by the client to ‘mask’ the roof area of the new cinema and to allow it to blend in with the existing landscaping of the property.

What is a green roof?
A green roof is an environmentally friendly alternative to traditional roofing. Green roofs also provide a high degree of insulation  and are known to provide an extremely constant temperature throughout the year (Cool in summer and warm in winter). Another key advantage is that green roofing is looked upon favourably in sensitive environments as it allows them to blend in with the surrounding area.

The diagram shows the various components that make up a green roof system. The concrete roof initially has a liquid waterproofing compound applied. On top of this is then a layer of insulation.  A cavity drain membrane system is then fixed in place and finally a root barrier and reservoir membrane. The reservoir membrane (in this case Delta FLORAXX) stores rain water to help during periods of drought.  The membrane is then covered with soil and grass seeded providing the perfect base for the green roof to grow.

The basement waterproofing solution from Timberwise
Internally as the newly constructed room was to be used as living space a type c waterproofing solution was designed and installed. This waterproofing design involved the use of cavity drain membrane to cover the walls and floors and a drainage channel fitted around the perimeter of the basement area. The drainage channel then went to a discharge point via gravity drainage.

The pictures show the roof prior to the waterproofing process, the liquid waterproofing compound been applied, the insulation in place and finally the cavity drain membrane and reservoir membrane application.

Involving Timberwise with your waterproofing project
If you have a  basement waterproofing project that would benefit from the waterproofing expertise of Timberwise don’t hesitate to get in touch! We have a variety of waterproofing techniques at our disposal to make sure that your basement will remain dry for many years to come.

Your local Timberwise office has a trained waterproofing surveyor who can advise on what waterproofing solution is right for you. To find out more about the waterproofing solutions available visit our dedicated basement waterproofing pages (
To arrange a survey simply complete our on-line basement waterproofing survey request form ( or call your local office on 0800 288 8660.

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Timberwise is a leading Property Care Company with branches throughout the UK providing domestic & commercial building preservation from basement waterproofing, dry rot, damp & woodworm surveys & treatments, structural repairs & flood damage restoration.
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