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ARCAT Architect & Specifiers Required Format

Mortairvent Catalog (.PDF)

Manufactured stone, EIFS & stucco are extremely popular home exterior coverings.  Despite their considerable durability hairline cracks will form, most frequently in the mortar joints.  These cracks are especially common in parts of the country that experience frequent freeze and thaw weather patterns.  These hairline cracks allow wind-driven rain to penetrate the mortar and collect within the interior walls.  Once the moisture gets in it has nowhere to go thus creating the perfect environment for toxic mold growth.

Mortairvent® is a two-ply mortar deflection and ventilation system that had been specifically designed for use with manufactured stone, stucco, eifs and brick. By installing the mortairvent two-ply system, a ventilation cavity is created between the vapor barrier and exterior wall.  The blue polymer core mesh creates the airspace, while the filter fabric blocks mortar droppings from seeping into this newly formed cavity, while still allowing moisture to pass through.  The combination of drainage and ventilation eliminates the threat of toxic mold.

Roll Size: 39" x 61.5'

Available to meet Canadian 10 mm Rainscreen Code Requirements.

Roll Size: 39" x 40'

INSTALLATION INSTRUCTIONS

• Apply a water resistant barrier over sidewall sheeting. Note: Some Regions may require two weather resistant barriers for stucco applications.  Check local codes for more information.
• Install Mortairvent® after windows and doors have been properly installed and flashed.  Starting at the base of the wall unroll mortairvent from left to right with the flap down.  The three-dimensional blue non-woven side against the water resistant barrier.  Staple or nail every three square feet.  Unroll the next course in the same manner as the first.
• Be sure to always butt the blue material together without overlapping.  Make sure to pull the four-inch flap over the previous course (shingle style) and staple.
• On the bottom course only, fold the four-inch flap and tuck it against the water resistant barrier.   This will ensure that insects cannot enter the air channels. 
• Apply metal lath over mortairvent using manufacturers recommended fasteners and spacing.