Rainscreen Solutions for
Hardie Board
and Fiber Cement Siding

Back-vent siding to prevent swelling, reduce maintenance, and extend its life.

A predictable rainscreen air gap behind fiber cement sidings like Hardie Plank® and Hardie Shingle® adds durability to the exterior. MTI's Sure Cavity™ and Corrugated Lath Strip™ create a capillary break that prevents entrapped water and promotes airflow to dry out the siding and substrate. 

Tips for Durable Fiber Cement Exteriors

  • Keep siding dry on the job site
  • Prime and paint all 6 sides
  • Follow manufacturer guidelines for joint spacing and caulking
  • Allow 1/4" gap on drip caps above windows for drainage
  • Back-vent with a rainscreen air gap

Sure Cavity Rainscreen Drainage Plane

 Sure Cavity™ Rainscreen Air Gap

Sure Cavity™ drainage mat features rigid channels and a built-in bug screen. Sure Cavity lays flat on the sheathing and reduces nail drive-through for easier installation and superior appearance.

Corrugated Lath Strip with Siding

 Corrugated Lath Strip™ Rainscreen

Corrugated Lath Strip™ vented furring strips are installed over the framing. Fasten siding through Corrugated Lath Strip for a predictable vented space. Lightweight, low-cost, and rigid. 

Rainscreen-compatible termination

 Vented MTI Edge Metal™

Water at the base of the wall needs an exit strategy.  With frequent holes for drainage and ventilation, MTI Vented Edge Metal enables the rainscreen wall to dry to its fullest potential.

*HardiePlank and HardieShingle are registered trademarks of James Hardie Building Products Inc. All Rights Reserved. James Hardie Building Products is not affiliated with Masonry Technology Inc and does not endorse these claims.

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