Sep 274 min read

Avoid These Common Mistakes When Installing Fibre Cement Cladding

Bad installation of Fibre Cemment Cladding

Fibre cement cladding is a durable, versatile material that’s perfect for enhancing your home’s exterior. However, like any construction project, improper installation can lead to issues that reduce its effectiveness and lifespan. In this post, we’ll explore some of the most Common Mistakes When Installing Fibre Cement Cladding, and how to avoid them to ensure your project goes smoothly.

1. Incorrect Storage and Handling

fibre cement cladding handling and storage

One of the most common mistakes with fibre cement cladding happens before installation even begins: improper storage and handling. This material is sensitive to moisture, and if stored incorrectly, it can warp, crack, or develop other issues.

How to Avoid It: Store the cladding in a dry, covered area on a flat surface, raised off the ground. Use protective coverings to shield it from moisture while allowing airflow to prevent condensation. Whenever moving fibre cement cladding boards always carry them vertically on their edge, ideally between two people to ensure no damage to the boards.

2. Incorrect Fixings

fibre cement cladding screw/nail fixing detail

Using the wrong fixings or installing them incorrectly is another frequent mistake with fibre cement cladding installation. Some installers use nails that are too small, which can compromise the integrity of the cladding and lead to loosening over time.

How to Avoid It: Always use the recommended screws for your specific fibre cement product. Make sure fasteners are corrosion-resistant (Stainless Steel) and installed flush with the surface, but avoid overdriving them, as this can crack the cladding.

3. Inadequate Gaps for Expansion

Fibre cement cladding expands and contracts with temperature and moisture changes. Failing to leave enough room for this natural movement is a common install mistake that can cause cracking, warping, or buckling over time.

How to Avoid It: Leave sufficient gaps between boards according to the manufacturer's guidelines. Typically, a gap of 5mm to 10mm at the top and bottom and 2mm to 3mm between boards and trims is required to accommodate expansion.

4. Cutting Without Proper Equipment

Cutting fibre cement cladding incorrectly can lead to rough edges, excessive dust, and even damage to the boards. Some installers may use inappropriate tools or fail to follow safety protocols, which can lead to poor results and health and safety issues.

How to Avoid It: Use fibre cement-specific blades or guillotines when cutting. Always cut in well-ventilated areas and wear protective gear, including a dust mask, as the dust from cutting fibre cement can be harmful when inhaled. Check out our Step by Step Guide to Cutting Fibre Cement Cladding.

5. Not Installing Breather Membrane

One of the biggest common install mistakes with fibre cement cladding is neglecting to install a proper moisture barrier behind the cladding. Without this crucial layer, moisture can seep behind the panels, leading to water damage, mold growth, and structural issues.

How to Avoid It: Always install a weather-resistant breather membrane, before applying the cladding. This protects the structure from moisture intrusion and prolongs the life of your cladding.

6. Failing to Seal or Paint Edges

Exposed or unsealed edges of fibre cement cladding can absorb moisture, leading to swelling, warping, or deterioration. This is often a result of installers failing to properly seal cut edges or leaving them unpainted.

How to Avoid It: Ensure all cut edges are sealed with the recommended touch up paint sealant before installation. Remember when painting any cut edges do not get paint on the face of the boards. The best application method is using a small brush or washing up sponge, wipe any excess paint from the front face immediately.

7. Ignoring Manufacturer Guidelines

Each brand of fibre cement cladding has its own set of installation guidelines. One of the most frequent mistakes is ignoring these instructions, leading to improper installation and even voiding warranties.

How to Avoid It: Always follow the manufacturer’s specific installation guidelines for your cladding products. These guidelines are designed to ensure optimal performance and longevity.

8. Incorrect Batten Spacing

Incorrect spacing of battens behind the cladding is another common install mistake. If the battens are spaced too far apart, it can reduce the structural support for the cladding, leading to sagging or warping.

How to Avoid It: Ensure battens are spaced correctly, as specified in the manufacturer’s instructions, typically 600mm apart depending on the cladding manufacturer.

9. Overlooking Regular Maintenance

While fibre cement cladding is low-maintenance, it's not maintenance-free. Many homeowners and installers make the mistake of assuming that no upkeep is required, which can lead to a buildup of dirt, mildew, or unnoticed damage over time.

How to Avoid It: Plan for regular cleaning and inspections to maintain the cladding's appearance and structural integrity. Periodically check for any signs of damage, such as cracks or loose panels, and address them promptly to extend the life of the cladding.