10 Mistakes To Avoid When Installing James Hardie Siding (And Why You Want An Elite Preferred Installation Crew)

Installing James Hardie siding can be a rewarding project, but it’s crucial to avoid common mistakes to ensure a professional finish and long-lasting durability. EMA Construction is an Elite Preferred James Hardie contractor with a 99% recommendation rate from over 100 reviews and over 10 years in the preferred program.We occasionally encounter incorrectly installed James Hardie siding and are happy to replace it with properly installed siding. However, James Hardie siding is a premium material and that makes it worth paying for a proper installation the first time. Here are ten common mistakes to avoid:

1. Incorrect Fastening – Nailing too deep or too shallow: Overdriving nails can damage the siding, causing it to crack or weaken. On the other hand, nails should be flush with the surface. If they’re not driven in enough, the siding can be loose. Another important component of fastening is correct spacing. Be sure that nails are placed at the proper distance from the edges and within recommended intervals.
2. Improper Gaps and Seams – Lack of expansion gaps or insufficient gaps: Leaving insufficient gaps for expansion and contraction can lead to buckling and warping. Ensuring uniform gaps between siding boards maintains a consistent appearance and proper performance.
3. Ignoring Flashing and Caulking – Not installing flashing where the siding meets doors, windows, and corners can lead to water infiltration. Failing to caulk joints and seams properly can result in water damage and reduce the lifespan of the siding.
4. Improper Surface Preparation – Siding installed over an uneven surface can appear wavy and may not adhere properly. Not installing a proper weather-resistant barrier can leave your home vulnerable to moisture.
5. Cutting Mistakes – Using inappropriate tools can cause chipping or rough edges. It’s best to use fiber cement-specific saw blades recommended by James Hardie. It’s not just about having the correct tools, but using them correctly. Poorly measured cuts can lead to gaps and misalignment.
6. Incorrect Painting and Sealing – Failing to prime the ends of cut boards can allow moisture to penetrate. Painting or sealing before the siding has acclimated to the local environment can cause issues with adherence and finish.
7. Ignoring Manufacturer’s Guidelines – Not following James Hardie’s installation instructions can void the warranty and result in improper installation.
8. Improper Handling – Dropping or mishandling the boards can cause damage or cracks. An insured installation crew can make sure that you never have to handle your own materials and even if something happens, you’ll be covered. Improper storage can also damage the material before it goes on your house. Storing siding in a flat, dry place and covered to protect from moisture is crucial before installation.
9. Lack of Safety Measures – Not wearing appropriate safety gear, like gloves and dust masks, can pose health risks due to silica dust from cutting fiber cement.
10. Poor Alignment and Spacing – Misaligned Boards: Ensuring each row of siding is level is critical for a professional appearance and proper function. Improper Overlap: Failing to maintain the correct overlap between boards can affect the siding’s ability to shed water properly.

Avoiding these common mistakes can help ensure that your James Hardie siding installation is successful, durable, and visually appealing. Always refer to the manufacturer’s detailed installation instructions and consider consulting a professional if you’re unsure about any step in the process. If you’re considering installing James Hardie yourself or having someone other than an elite preferred contractor perform he install, contact EMA Construction for a free quote before you decide!