Hardie™ Trim-Over™ Installation Method
Cut time, cut costs, and boost profitability using the Hardie™ Trim-Over™ Installation Method, the most cost-effective way to install Hardie® siding and trim.
What is the Trim-Over™ Method?
The Trim-Over™ Method is an alternative installation technique that creates a distinctive trim appearance for windows, doors, and corners. It involves installing siding before the window, door, and corner trim, significantly reducing the amount of caulking required.
How does it work?
Using the score-and-snap technique, contractors reduce measurements and cuts, minimize downtime, and accelerate installation. By installing siding before trim, you eliminate most caulking—saving time, materials, and labor while increasing efficiency and profitability. Install using these simple steps:
Run plank off the wall edge and fasten
Score-and-snap plank at the wall edge
Pre-build corner trim
Fasten corner trim to the wall
Access tools and training to get started
Get exclusive access to essential resources to help you implement the Trim-Over™ Installation Method, including the installation guide, training presentations, and how-to videos.
Why pros are choosing the Hardie™ Trim-Over™ Method
30% increase
in average installation rate has been demonstrated in installation studies compared to butt-to installation.
Lower costs
Trim covers cut edges—less caulking is needed. Save on materials, callbacks, and labor.
Increased productivity
Installers can stage and install siding without the need for precise measuring and cutting prior to installation.
Contractor Testimonial: How the Hardie™ Trim-Over™ Method Boosted Efficiency & Sales
See how Cousins Roofing, Siding & Decks transformed their business with the Hardie™ Trim-Over™ Method.
Get hands-on installation support
Receive hands‑on training experience that helps make your jobs with Hardie® products faster, easier, and more profitable. Get connected with the James Hardie sales team to see if there is a Hardie™ Pro Lab event in your area.Connect with a sales repGet everything you need to start installing
Access the tools and resources need to implement the Trim-Over™ Installation Method, plus connect with a sales rep for hands-on support and expert guidance.
