Installation Guide

ManualsBrandsJames Hardie ManualsBuilding materialsHardieTrim HZ10 .75 in. x 3.5 in. x 144 in. Fiber Cement Rustic Grain Trim Board

TR1121_P4/6 6/13

For Corners, Band Boards, Windows, and Door Applications:

HardieTrim

boards can be installed with Flat Tabs (JH sku no. 280154) and Corner Tabs (JH sku no. 280155) which provide concealed fastening. Only Flat and

Corner Tabs can be used with HardieTrim

boards to create a concealed fastening. Additional framing may be required to ensure the Flat and Corner Tabs are

fastened properly to the structure. Special attention should be paid to the framing when using a sheathing that does not have fastener holding equivalent to OSB

or Plywood sheathing.

Step 1: Attach Flat Tabs to the back side of the trim with 4 18 ga. 1/2" L x 1/4" W narrow crown corrosion resistant staples, equally spaced in one row,

positioned no closer than 1/2" from trim edges, using a pneumatic staple gun. (Figure 19)

Step 2: For wood frame construction, attach the trim to the building using 2, 6d siding nails fastened through the Flat Tabs. ET&F or equivalent fasteners

may be used to attach the Flat Tabs to steel frame construction. (Figures 20)

Fastener spacing will vary based on application. Refer to speciﬁc sections in these instructions for required fastener spacing by application (window, band

board, etc.) Refer to fastener table on page 6

Figure 19

TRIMMING CORNERS

HardieTrim

boards are installed around corners by pre-building the corner off the wall with the Corner Tabs (JH sku no. 280155).

• Attach Corner Tabs to the back side of the trim with 8 18 ga. 1/2" L x 1/4" W narrow crown corrosion resistant staples using a pneumatic staple gun. Ensure

the Corner Tabs are fastened tight and straight to the trim boards. (Figure 21)

• For wood frame construction, attach the trim to the building with 2, 6d siding nails fastened through the Corner Tabs. ET&F or equivalent fasteners

may be used to attach the Corner Tabs to steel frame construction. (Figure 22)

• Attach a Corner Tab 1" from each edge and every 20" o.c.

• TIP: Creating a jig for the work station is recommended to ensure the corners are fastened securely and straight. (Figure 24)

CONCEALED FASTENING TABS

Fasten 2” x 4”

timber blocks

to a work bench

Corner Tabs

Fasten 2” x 8” stud

to the timber blocks

HardieTrim

Figure 21 Figure 22

Use 4 staples per piece

of trim to fasten the

L-shaped tab to the

pre-built corner. Use

the nail line on the

tabs as a guide.

Corner studs

Siding nail

Corner Tab

weather cut

22.5º - 45º

Figure 23 Figure 24

Figure 20

Corner Tab

HardieTrim™ Flat Tab

Fasten 4 staples to the center of the nailing ridge.

Fasten

HardieTrim

Flat Tab to

minimum

7/16" OSB

with min 2, 6d

siding nails

Min 2"

Min 1/2"

Installation of HardieTrim Tabs over Pressure Treated Lumber:

HardieTrim™ tabs shall not come in direct contact with ACQ or CA preservative-treated wood. Refer to the General Fastening section of this document for

further information.

HardieTrim

NT3

™

boards with ColorPlus

Technology

Remove the laminate sheet as soon as possible after attaching the trim to the building.

Installation of HardieTrim tabs in Coastal Regions:

James Hardie requires that stainless steel staples & fasteners be used when installing HardieTrim™ Tabs in coastal regions.

Figure 26

Figure 27

TRIM APPLICATION FOR WINDOWS,

DOORS & OTHER OPENINGS

NOTE: Follow your window/door manufacturers installation instructions.

Side trim pieces go to

the top of the window.

Header piece spans the window

including the side trim pieces.

Bottom trim

piece is the

width of the

window.

Trim the opening prior to the installation of the siding (Figure 26).

Place a Flat Tab at the end of each trim board and one tab every 16"

OC. Attach the trim boards and Flat Tabs around the opening as

shown in Figures 26 and 27. Use 16 ga. galvanized 2" long ﬁnish

nails to ensure proper fastening if needed.