Quality Range of External Drainage Solutions
John Newton & Company supply two quality external drainage membranes together solutions and ancillary products for the reliable removal of ground water.
Newton 406 Geodrain has a 6mm drainage layer and a vertical water flow of 1.27 litres per metre squared per second.
Newton 410 Geodrain has a 10mm drainage layer and a vertical water flow of 4.60 litres per metre squared
per second.
Ground water removal is required to ensure that the primary waterproofing membrane is not in permanent contact with ground water pressure so as to comply with the recommendations of the landmark case ’Outwing V Thomas Wetherald’ which decided that it was not possible for the primary waterproofing membrane to be 100% defect free.
With large basements, the cost of proving a structural solution to deal with ground water pressure can be impractical or very costly. Newton System 400 drainage membranes can be used as part of a designed de-watering system that reduces or removes the water pressure to the tolerances of the structural design of the basement.
Where aggressive elements exist within the water, Newton drainage membranes can provide drainage and separation of the aggressive water from the structure.
John Newton & Company’s range of external drainage membranes are used to protect
- Foundation and retaining walls
- ’Concrete box’ new-build basements
- Underside of concrete rafts
With John Newton & Company you can expect top quality, innovation and technical expertise in designing the right products for your project.
External V Internal Waterproofing
Newton System 400 drainage membranes provide a means of removing ground water from basements or retaining walls or rafts and can be used in conjunction with primary waterproofing barriers such as Newton 902.
In most cases however, we find that Newton System 500 internally drained waterproofing is the safest option to provide the dry basement required. We suggest that Newton System 500 be explored as the waterproofing system or that Newton System 400 external drainage membranes are used in conjunction with Newton System 500.
For help and technical advice please e-mail info@newton-membranes.co.uk or ring 020 7237 1217
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