The installation of James Hardie shingle siding requires careful preparation, adherence to specific techniques, and attention to detail to ensure a durable and aesthetically pleasing result. This article details the process, covering preparation, cutting, fastening, maintenance, and considerations for professional installation, based on manufacturer guidelines and best practices. Proper installation contributes to the longevity and performance of the siding, protecting the structure from weather-related issues.
Preparing for Installation
Prior to commencing installation, thorough preparation of the exterior walls is essential. This includes a comprehensive inspection for any existing damage, such as decay or mold, which must be addressed before proceeding. Surfaces should be cleaned to remove dirt, dust, and debris, utilizing a pressure washer or a scrub brush with a mild detergent solution. Applying a high-quality primer is recommended to promote proper adhesion of the siding and enhance its overall durability. It is also crucial to verify that the walls are level, correcting any inconsistencies to ensure a smooth and even installation.
Accurate measurement and marking are vital components of the preparation phase. Utilizing chalk lines ensures precise alignment of the shingles on the wall. Snapping these lines at 6-inch intervals maintains consistent overlaps and staggered placement, contributing to a professional finish. The factory finish on James Hardie siding provides superior color consistency, adhesion, and durability, making surface preparation even more critical for optimal results.
Cutting and Handling James Hardie Shingle Siding
Proper cutting techniques are crucial to avoid damaging the siding and ensure a clean, professional appearance. James Hardie recommends several cutting methods, prioritizing those that minimize dust and breakage. The “best” method involves using a circular saw equipped with a HardieBlade® saw blade and an attached vacuum dust collection system. Alternatively, a circular saw with a dust collection feature (such as a Roam® saw) and a HardieBlade saw blade is considered a “better” option. A standard circular saw equipped with a HardieBlade saw blade is deemed “good.”
When cutting indoors, grinding or using a power saw is discouraged. Instead, shears (manual, pneumatic, or electric) or the score-and-snap method should be employed, though these are not recommended for products thicker than 7/16 inch. Regardless of the method, it is essential to minimize dust exposure. Dry sweeping should be avoided; instead, wet dust suppression or vacuuming is recommended.
When making cuts, the front side of the siding should be facing up to prevent chipping. For horizontal cuts, scoring the board with a utility knife before snapping it along the score line can produce clean breaks. A 1/8-inch gap should be left at corners, windows, and doors to accommodate expansion and contraction.
Careful handling of the siding is also important. Materials should be stored flat, kept dry, and covered before installation to prevent warping or damage. Installing wet or saturated siding may result in shrinkage at butt joints. Planks should be carried on edge, and edges and corners should be protected from breakage. James Hardie assumes no responsibility for damage caused by improper storage and handling.
Installation Procedures
The installation process begins with aligning the starter strip, which forms the foundation for the shingle application. The starter strip can be constructed from HardiePlank® lap siding, utilizing dimensions of either 8-1/4 inches or 9-1/4 inches. A 1-1/4-inch starter strip, followed by an 8-1/4-inch starter course, is a common configuration. Maintaining alignment between the bottom edges of the trim and siding is crucial for a uniform appearance.
Proper fastening techniques are essential for the longevity and performance of the siding. A consistent nailing pattern allows for material expansion and contraction. Correctly cutting and fitting shingle siding at inside corners ensures a seamless transition and prevents water infiltration.
James Hardie shingle panels can be installed over braced wood or steel studs, with stud spacing up to 24 inches on center. They can also be installed directly onto OSB sheathing with a minimum thickness of 7/16 inch. Irregularities in the framing and sheathing can potentially mirror through the finished application, so it is important to correct these before installation. A water-resistive barrier is required in accordance with local building codes, with appropriate flashing at penetrations and junctions. James Hardie manufactures HardieWrap® Weather Barrier, a non-woven, non-perforated housewrap that complies with building code requirements.
Adjacent finished grade must slope away from the building, typically a minimum of 6 inches within the first 10 feet, to prevent water from contacting the siding. James Hardie products should not be installed in a manner that allows them to remain in contact with standing water. HardieShingle panels are intended for vertical wall applications only.
Maintenance and Repair
Seasonal maintenance is crucial for protecting James Hardie siding from weather-related issues and extending its lifespan. Care methods should be adapted to the specific challenges of each season. Implementing a regular maintenance schedule improves both the aesthetic appeal and structural integrity of the siding.
Minor damages can often be addressed without full replacement. For minor scratches on ColorPlus siding, touch-up kits are available to cover small blemishes. Proper finishing of bottom edges prevents water infiltration and protects the siding from moisture damage. Maintaining a minimum 1/4-inch space between the siding and trim is crucial for effective moisture management.
To clean oil or grease from the siding, a mild liquid dish soap mixed with water and a soft cloth should be used, followed by thorough rinsing. For mildew removal, a mildew-specific cleaner and a soft sponge should be used, following the manufacturer’s instructions carefully.
Professional Installation
While DIY installation is possible, professional assistance can significantly enhance the efficiency and quality of James Hardie Shingle Siding installation. Professionals bring expertise and experience, ensuring the installation meets industry standards and is completed without unnecessary delays or mistakes. Hiring a qualified contractor can provide peace of mind and ensure a long-lasting, properly installed siding system.
Conclusion
Successful installation of James Hardie shingle siding relies on meticulous preparation, precise cutting and fastening techniques, and ongoing maintenance. Adhering to manufacturer guidelines and best practices ensures a durable, aesthetically pleasing, and weather-resistant exterior. While DIY installation is feasible, professional assistance can provide added assurance of quality and compliance with building codes. Proper installation and maintenance contribute to the long-term protection and value of the property.