James Hardie Trim Sizes

James Hardie offers a variety of trim sizes options to pair with your chosen James Hardie fiber cement siding. Learn about sizes and textures in this quick post:

What sizes does HardieTrim come in?
HardieTrim thickness
HardieTrim style and size guide

What sizes is James Hardie trim available in?

Choose the right James Hardie to trim to complement your home’s James Hardie fiber cement siding.

HardieTrim® is available in Smooth, Roughsawn, or Rustic Grain textures and each is available in multiple widths. More details below*.

^{*Sizes shown for Primed products only, sizes will vary in availability for factory finished color products.}

Choosing the right thickness for your HardieTrim®

When homeowners are ready to replace the siding on their homes, it’s easy to overlook the importance of trim. We spoke with one of our siding experts, Devon Anderson, and asked him what homeowners should know when choosing trim. Here’s what he had to say:

“There are different thicknesses of trim, most companies use trim that’s less expensive and not as thick as what we order for our jobs. Other companies use a 4/4 board which they put over the siding but with this type of installation, water can find its way into the framing around windows and doors.

We use a 5/4 board which is a thicker trim and trim first around the windows and doors then install the siding so that it bumps up to the trim instead of the window, this creates a cleaner look and it’s less likely to create leaks around the window.

Most people don’t expect trim to be the most expensive part of the job so it’s worth doing right–that’s why we choose the 5/4 board over the 4/4 board for trim.”

EXPLORE: James Hardie Products

HardieTrim® Board Sizes by Style

Smooth

4/4 Boards
Thickness	.75 in	.75 in.	.75 in.	.75 in.	.75 in.	.75 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	1.65 in	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.

5/4 Boards
Thickness	1 in.	1 in.	1 in.	1 in.	1 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.

Rustic Grain

4/4 Boards
Thickness	.75 in	.75 in.	.75 in.	.75 in.	.75 in.	.75 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	1.65 in	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.

5/4 Boards
Thickness	1 in.	1 in.	1 in.	1 in.	1 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.

HardieTrim® Batten Board Sizes by Style

Smooth

4/4 Boards
Thickness	.75 in.	.75 in.	.75 in.	.75 in.	.75 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.

Rustic Grain

4/4 Boards
Thickness	.75 in.	.75 in.	.75 in.	.75 in.	.75 in.
Length	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards	12 ft. boards
Width	3.5 in.	5.5 in.	7.25 in.	9.25 in.	11.25 in.