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 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
Essential Moisture Management Components
for Fiber Cement Sidings
Furring Strips
Corrugated Lath Strip™
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.
Siding At Bottom Of Wall
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.