Home » Installation » New Human™ Fiber Cement Siding and Cladding Installation Guide


The normal dimension of New Human™ fiber cement siding is 3000mm in length, 615mm in width and 14 or 15mm in thickness. On two long edges for a tight fit, every panel is ship-lapped.

Original New Human ™ accessories, including siding clip, starter, joint flashing are used in New Human™ unique construction and installation method. In the process of installation, a pocket of air is created between the panel and substrate which can reduce built-up moisture and minimize potential moisture damage to the substrate.

The warranty period for all New Human™ fiber cement sidings are 50 years and 15 years limited warranty period is for finish.


1. Site Preparation
New Human™ fiber cement siding/cladding can be directly installed on wood or metal frame. In compliance with best practices and local building codes, plywood can be used to build frame. As well as that, OSB board or plywood sheathing can be used.

Approved weather resistant barrier such as breathing paper can be used between siding/cladding. Of course, reference to local building codes is required.

Appropriate flashing or trim must be possessed by all openings to prevent moisture penetration. And before panels' fixation, self-sticky waterproof tape can be put around the window.

2. Fasteners Choice
For attachment to wood, corrosion resistant, coarse-thread or similar screws are definitely needed.

As well as that, stainless steel or hot-dipped galvanized screws are recommended too. And all of these products should be in accordance to local building codes.

Whenever possible, accessories should be attached onto building wood or metal frame. Suitable wood or metal fasteners are also required in compliance with local building codes.

3. Installation Details
To set the first course on the proper angle, a starter strip is needed to create a drip edge at the bottom of the siding. The material of the starter strip must be corrosion resistant and the starter strip should be secured with screws at every 250 mm into sill plate or studs. Set cladding/siding in place and secure with siding clips.

Install the starter strip level at the bottom of the wall sheathing or mudsill.

The level of the first course of board must be ensured because it is the guide for the entire installation. For the first course, a level and straight reference point can be created by a level and chalk line. Throughout the whole process of installation, level lines should be checked.

The first course of siding must be hanged at a minimum distance of 6mm below the starter strip.

The bottom edge of the first course must be at least 150mm clearance above the finished grade.

4. Panel Installation
From left to right, first panel should be put and attached to the starter track by a siding/cladding clip at top of panel at each stud.

Along the row, from left to right, a joint clip should be placed at the top of all vertical panel joints as the installation proceeds from the bottom to the top of the wall.

Panels should be tightly fit together on horizontal and vertical joints to ensure panel edges are properly butted together. Set the panels by tapping the edge with a block of wood or a rubber mallet until cladding fits tightly.

5. Last Course Installation
Panels should be cut horizontally to properly fit at the roof line or proper transition point. At the bottom of all vertical joints stabilizer clip should be used.

At the studs and through the vented spacer all along the top, face-fasten cladding/siding is applied. Pre-drill cladding/siding starts from the top/cut edge.

Roof cap can be used to cover panels if necessary.

6. Vertical Expansion Joints or Filling Foam Backer Rod (Filling Silicone Sealant)
Firstly, fill the foam backer rod or install vertical expansion joint to butt up against panel and secure the joint to substrate on one side. Ship-lapped edges of panels must be cut off to achieve a tight fit against the sealant backer.

The next cladding/siding is installed to joint and secured with appropriate clips. Low-adhesive tape is applied along length of panel and edges are trimmed to protect sidings from sealant and create a smoother look. Silicone sealant should be filled by the sealant gun into the expansion joint or foam backer rod. The whole process starts from the bottom and then sealant is pushed into the gap.

7. Corners Installation
There are several options for outside corner installation.

Mitering panel corners
Outside corners can be fabricated in the field by mitering the siding/cladding at 45 degrees for a continuous clean look.

Pre-Manufactured Mitered Corners
Set corner piece can be placed on the starter track and secured with one corner clip. Clips should be put at the bottom and the top of the ship-lapped edges.

Place the foam backer rod or install vertical expansion joint behind the corner piece all the way down into the starter track. Fasten the clip on the side butting up to the panel course.

After all cladding/siding is installed, fill polyurethane sealant at 75%-80% depth.

Fiber cement and PVC trim boards

Metal and vinyl trim
Trim channel installation should be in accordance with manufacturer's installation instructions. Fit cladding/siding into to channel trim snugly, so that cladding/siding edges are not exposed.

Apply polyurethane sealant to joint width.

When completion of installation, it may be necessary to clean panels. When cleaning panels, use no more than 400 psi of water pressure at 10 to 12 away. To clean heavily soiled areas a mild detergent and/or soft bristle brush may be required.

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