How To Replace Water-Damaged Siding with Fiber-Cement

Water damage to siding is a common issue that many homeowners face, especially in areas prone to high humidity or frequent rainfall. When siding becomes compromised by moisture, it not only affects the appearance of a home but can also lead to more serious structural problems if left unaddressed.

Fiber-cement siding is a popular solution for replacing water-damaged siding due to its durability and resistance to moisture. In this guide, I will go over the causes of water damage to siding, how to identify it, and the steps to replace damaged sections with fiber-cement siding.

What Causes Water Damage to Siding

Water damage to siding can occur for various reasons, often stemming from improper installation or maintenance issues. Understanding these causes is crucial for preventing future damage and ensuring the longevity of new siding installations. Several factors contribute to water damage in siding. 

Overdriven nails can compromise the siding’s integrity, while poorly sealed joints allow moisture to penetrate. Insufficient clearance between siding and ground, inadequate eave overhangs that fail to divert water, and sprinklers and shrubs positioned too close to the home are also common culprits. 

Often, hardboard siding is particularly vulnerable to water damage when not installed correctly. Over time, rainwater can seep in, leading to mildew, rot, and soft spots that may go unnoticed until significant damage has occurred.

For water damage beyond siding, read our restoration pricing guide and get a quote from top-rated restoration companies.

Signs of Water-Damaged Siding

Identifying water damage early can save you from costly repairs down the line. Being aware of the telltale signs allows for prompt action and prevention of further damage.

Visible Indicators of Water Damage

You should be on the lookout for these signs of water-damaged siding:

• Mold or mildew growth on the siding surface
• Warped or buckled panels
• Peeling paint or bubbling beneath the paint surface
• Soft or crumbling areas when touched
• Visible cracks or gaps in the siding
• Interior wall stains or dampness

Regular inspections, especially after heavy rain or during humid seasons, can help catch these issues early and allow for timely repairs.

Less Obvious Signs of Damage

Some less obvious signs might hint at water-damaged siding:

• A musty smell near walls can reveal hidden mold growth.
• Increased pest activity, as insects and rodents are attracted to moist, rotting wood.
• Higher than usual humidity levels inside the home may hint at compromised siding.
• Swelling or softening of the home’s interior walls near the damaged siding.

By being vigilant and conducting thorough inspections, it’s possible to identify and address water damage before it exacerbates.

Benefits of Fiber-Cement Siding

Fiber-cement siding has gained popularity as a replacement for water-damaged siding due to its numerous advantages. 

Durability Benefits

This composite material offers a blend of durability and aesthetic appeal that makes it an excellent choice. Fiber-cement siding, composed of cement, sand, cellulose, and additives, provides several benefits. 

It has high resistance to moisture, rot, and pest infestations, and you can install it closer to the ground than a hardboard. It also offers longer paint retention compared to wood siding, cost-effectiveness in many regions, and extended lifespan between repainting cycles. Because of its affordability, you won’t break the bank if you decide to switch from other types of siding. 

These qualities make fiber-cement siding a smart choice for replacing damaged sections and protecting homes against future water damage.

Environmental and Aesthetic Benefits

Additionally, fiber-cement siding offers environmental and aesthetic benefits. It’s a sustainable and eco-friendly choice due to its recyclable materials. The product’s variety of textures and colors can closely mimic wood, stucco, or masonry, offering versatile design options. Its fire resistance can bring peace of mind in regions prone to wildfires. 

Low-maintenance requirements save time and effort compared to traditional siding materials like wood. The combination of these attributes ensures that you not only improve your home’s durability but also its appearance and environmental footprint.

Replacing Damaged Siding Sections

The process of replacing damaged siding typically focuses on the most vulnerable areas. This targeted approach allows for cost-effective repairs without the need for a complete siding overhaul.

Areas Most Prone to Water Damage

Water damage usually occurs in two primary areas: the first three courses of siding (about 2 feet above ground level) and unprotected wood-framed chimneys or chases. Siding that isn’t directly exposed to rain often stays in good shape. This means you can replace part of it instead of a full replacement project.

The Replacement Process

When replacing damaged siding with fiber-cement, contractors typically follow these steps:

1. Remove the damaged sections of siding
2. Inspect and address any underlying framing issues
3. Ensure the building paper or housewrap is intact to prevent deeper damage
4. Install the new fiber-cement siding, matching the wood-grain pattern to existing siding
5. Apply a primer and two coats of acrylic latex paint for a seamless blend

This process allows for a durable repair that integrates well with the existing siding, both functionally and aesthetically.

Detailed Steps for Replacement

Expanding on the replacement process, you can break down the steps further:

1. Assess the Extent of Damage: Before removal, carefully inspect the siding to determine which sections are affected and how much needs replacement.
2. Preparation of the Area: Cover landscaping and nearby structures to prevent damage during the removal process.
3. Safe Removal of Old Siding: Use the proper tools to carefully detach damaged sections to avoid harming surrounding boards.
4. Inspection of Underlying Structures: Once removed, check the underlying structures, including the wall sheathing and studs, for any signs of rot or mold.
5. Weather Barrier Preparation: Ensure that the weather barrier is intact. If damaged, it should be repaired or replaced.
6. Exact Installation: Cut the fiber-cement siding to fit the uncovered area, ensuring precise measurements for a clean fit.
7. Sealing and Fastening: Secure the siding with proper nails, ensuring it’s sealed around all edges to prevent future water infiltration.
8. Finishing Touches: Apply high-quality caulking to seams and joints, and paint the repaired section to match the existing color and finish of the home.

By following a meticulous process, you can assure your siding replacement is thorough and long-lasting.

Preventing Future Water Damage

After replacing water-damaged siding, taking preventive measures is crucial to avoid similar issues in the future. Proper maintenance and strategic improvements can significantly extend the life of siding and protect the home’s structure.

Effective Prevention Strategies

To prevent future water damage to siding, conduct regular inspections of all siding and quickly address any issues.

Use downspouts to move water away from the house’s foundation. Install or fix gutters and downspouts to control water flow well. Keep landscaping in good shape to stop moisture from building up near the house. Make sure there is enough airflow around the siding to reduce humidity. 

By implementing these strategies, you can protect their investment and maintain the integrity of their siding for years to come.

Additional Precautions for Homeowners

There are several additional precautions that you can take. Properly install weather-resistant flashing around doors, windows, and other openings to direct water away. Keep the siding free from debris and regularly power wash to prevent mold and mildew growth. Use a humidity meter to check the home’s indoor humidity, especially in basements and crawl spaces. 

Address roof issues quickly, as leaks in the roof can lead to moisture-penetrating siding. Fixing roof issues quickly can prevent further siding damage. These extra precautions help ensure the siding remains resilient against moisture problems.

DIY vs. Professional Siding Replacement

While you may want to tackle siding replacement as a DIY project, I recommend hiring professional contractors for this task. The complexity of the job and the importance of proper installation make expert involvement crucial.

Why Professional Installation Matters

Professional siding contractors offer several advantages:

• Specialized tools and materials for proper installation
• Experience in blending repairs seamlessly with existing siding
• Knowledge of local building codes and best practices
• Ability to identify and address underlying issues
• Warranties on workmanship and materials

Unless you have significant experience with siding installation, the risks of improper DIY work often outweigh the potential cost savings.

Weighing the Costs and Benefits

Understanding the costs and benefits of professional vs. DIY installation can help you make an informed decision:

1. Tools and Equipment: Experts access tools that may be costly or impractical for you to purchase.
2. Time and Labor: You can complete a professional job more quickly, minimizing disruption to the household.
3. Quality Assurance: Quality craftsmanship ensures longevity and performance.
4. Potential Savings: While DIY might save money upfront, mistakes can lead to more expensive repairs down the line.
5. Safety Considerations: Professional contractors train to handle risks safely, reducing the risk of injury.

Weighing these factors can guide you to the best choice for your specific needs and circumstances.

Cost Considerations for Siding Replacement

The cost of replacing water-damaged siding with fiber cement can vary depending on several factors. Understanding these variables can help you budget effectively for your siding project.

Factors Affecting Siding Replacement Costs

Several elements influence the overall cost of siding replacement. These include the extent of the damage and area to replace, the quality, and brand of fiber-cement siding chosen, labor costs in the local area, any necessary repairs to underlying structures, and additional features like insulation or moisture barriers. 

Fiber-cement siding may cost more at first than some other options, but it is stronger and easier to keep clean. This makes it a good choice in the long run.

Estimating the Budget

Creating a detailed budget involves considering several factors. Material costs are a key part of understanding the price range for fiber-cement siding options, including any custom features. You can account for labor expenses by obtaining quotes from multiple contractors to measure average local labor costs. 

Depending on local laws, permits, and inspection fees might add to the total expense. Setting aside a contingency fund for unexpected issues like hidden structural damage is also wise. By accounting for these variables, you can develop a realistic and manageable budget for their siding project.

Final Thoughts About Replacing Water-Damaged Siding

Replacing water-damaged siding with fiber cement offers a durable and attractive solution to a common problem. By knowing what causes water damage, seeing the signs early, and choosing a good replacement material like fiber cement, you can protect your home from future moisture problems.

While the process may seem overwhelming, professional installation ensures you do the job right, providing peace of mind and long-lasting results. Fiber-cement siding can keep homes looking good and strong for many years with proper care. It’s a smart investment for anyone who needs to replace their siding.y. The affordability and durability of fiber-cement siding makes targeted repairs a wise investment.