This high performance polyethylene membrane is extruded into a series of studs to create a continuous air gap behind the waterproof membrane.
On the face of the membrane is a welded mesh which allows plasters and renders to bond efficiently to achieve dry and durable finishes. Dab-fixing of board finishes is also an option.
Delta-PT is watertight, and resistant to high and low temperature extremes (-30oC to +80oC). It will also stand-up to the adverse effects of acids, alkalis, oil and solvents, and is approved for use in drinking water applications.
The 8mm studs serve a dual purpose – isolating the damp wall from the new plaster and decorative finishes, and allowing ventilation of the wall for permanent dampness control.
Ventilation gaps located at both the top and bottom of the system allow circulation for this purpose. Alternatively, the air gap can be vented externally via a passive air vent installed in the wall.
To further enhance the system’s performance, the company offers the Delta-PT Profile which can be used at both the upper and lower edges of the membrane.
This Profile has ventilation slots incorporated into the design, to ensure that effective ventilation is provided at all times. The Profile section also acts as a guide for plaster or render coats.
Although primarily employed in internal applications, Delta-PT can also be used externally as a waterproof support for rendered finishes especially in exposed situations, where elevations of the building are subjected to water penetrations, salt-laden air, or are simply in need of a face-lift.