(Patent Pending) 
 
The issue of dampness being present on the outside of concrete foundations and subsequent migration of moisture up the foundations which can rot  out building components, is a perennial and persistent problem.
 
Sometimes strip drains are employed however they perform badly in reducing moisture migration and may actually encourage capillary water migration in the area between the drain and the foundation.  It does not dry out.
 
The solution is to provide an air ventilated barrier which stops the earthworks from touching the foundation.
 
This is achieved by inserting a modified “C” section to retain the soils and provide ventilation as well as providing a means of dealing with occasional water and excess water removal.
 
Currently it is recognised that a distance of 35mm is the least distance recommended between any hard surface and the bottom of any cladding but we reccommend 50mm.
 
This product provides both an aesthetic finish and provides a secure barrier to moisture being present on the surface of the foundation.  Strip drains typically only reduce the height of any subsoils contacting the foundations by 80 -100mm.
 
This current design provides a well ventilated space and draining options to prevent any build up of occasional water and overcome the aforementioned problems.
 
For the most part the surrounding soils are usually self draining and absorb water easily thus holes on the lower portion of the profile allows occasional water to escape and prevent damp soils from resting against the foundations. Exceptions to this are where high water tables exist  or heavy clay materials or where exceedingly wet soils are subject to drain off from higher surrounding landforms. The design has an option to drain to a sump and remove any water that accumulates during adverse weather or other exceptional events.  To avoid the ingress of sand or lighter soils into the clear space it is recommended that the exterior lower portion of the profile be backfilled with 20mm clean stone chips. Depending on the surface finish adjacent to the grate the whole of the  backfill can be the same 20mm clean stone chips.
 
All materials are constructed from 5052 grade 1.6mm Aluminium. This grade of aluminium has been extensively used in the extreme marine environment and has been found to be exceeding reliable and resistant to corrosion.  Aluminium has also been used overseas with great reliability in culverts which are completely covered with soils.  Results show very little corrosion and good reliability. Thus the product is expected to preform for many years and provide an effective solution to a serious and continuing problem. The exterior of the profile is coated with epoxy paint system to enhance longevity.
 
A seperate profile is available to provide effective drainage from door thresholds.

For ease of installation is a significant advantage as each length is fully assembled and require only mounting holes to be drilled in the foundation.
The profile is then attached to the foundation by nylon anchors or similar.
 
Available in 2400mm lengths or speciality shorter lengths as required..
 
It is recommended that all foundation surfaces have applied at least 2 coats of Mulseal or similar before the installation of any DryZone products.