DELTA®-DRY

Ventilated Rainscreen: The innovative approach of solving moisture problems in building envelopes. Ideal behind manufactured stone and conventional stucco.

Material

DELTA®-DRY is a 3-dimensional membrane made out of a special high-density polyethylene that provides two-sided drainage and ventilation through its unique dimple and groove design.

Product Characteristics

The structured membrane provides a protective barrier and complete capillary break for residential and commercial building structures. It protects the building from bulk water intrusion behind the exterior cladding (i.e. wind driven rain) and manages water leakage through the cladding as well as transient moisture migrating from the wall structure by providing an air-gap on the interior and exterior side of the membrane for drainage and ventilation.

DELTA®-DRY accommodates water vapor, driven from the interior to the exterior of the structure to escape through the air space between the sheathing board and the membrane, while minimizing the potential for condensation that could cause damage within the building envelope.

The membrane provides excellent drying potential through ventilation behind any approved exterior cladding. At the same time it impedes solar-driven moisture towards the interior of the structure as it occurs with absorptive cladding materials like manufactured stone, stucco, cement board siding, brick veneer, etc.

The innovative membrane also helps to save energy by reflecting radiation heat – keeping heat outside in the summer and warmth inside in the winter.

Application

DELTA®-DRY is installed outboard of the Weather Resistive Barrier (i.e. building paper) over sheathing board. It also provides excellent performance if installed in lieu of a conventional WRB, where building authorities allow this type of application. The material is easy to cut with a utility knife. Seams are to be overlapped around 3 inches. Exterior cladding material can be installed as usual right on top of DELTA®-DRY. For further details please check the installation instructions.

Evaluation Reports & Building Code Approvals

BMEC Authorization No. 05-06-310

Technical Data

Product name	DELTA®-DRY
Color	silver-grey
Material	High-density polyethylene (HDPE)
Flammability	B2 according to DIN 4102
Temperature range	-22°F to +176°F (-30°C to +80°C)
Chemical properties	excellent chemical resistance, no root-penetration, rot-proof
Dimple height	apprx. 5/16" (8 mm)
Weight	apprx. 1.47 oz/ft² (450 g/m²)
Roll weight	apprx. 15 lbs (6.8 kg)
Roll length	50 ft (15.24 m)
Roll width	3.3 ft (1.0 m)
Service life expectancy	> 25 years (at pH between 4 and 9, and temperature < 25°C). The membrane should not be exposed to UV light for more than 30 days.