Hardie Rainscreen

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 Corrugated Lath Strip™ creates 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

Corrugated Lath Strip™ Furring Strips

An air gap prevents hydrostatic pressure in the wall assembly, lets gravity drain liquid moisture, and water vapor to exit at ventilated terminations. Lightweight 50ft rolls of Corrugated Lath Strip™ create a rainscreen air gap in both horizontal and vertical siding applications.

Vented MTI Edge Metal™

That water that drains to the bottom of the wall needs an exit strategy. MTI Vented Edge Metal™ is a metal termination designed for the Sure Cavity™ rainscreen. With frequent holes for drainage and ventilation, MTI Vented Edge Metal enables the rainscreen wall to dry to its fullest potential.

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