How Do You Install New Siding on an Old House?

AvatarByJoseph Thomas Roofing & Exterior

Updating the exterior of an older home can dramatically enhance its curb appeal, energy efficiency, and overall value. One of the most effective ways to achieve this transformation is by installing new siding. However, when it comes to older houses, the process requires a thoughtful approach to ensure the new siding not only looks great but also integrates seamlessly with the existing structure.

Installing new siding on an old house involves more than just attaching new panels to the exterior walls. It requires careful assessment of the current condition of the home’s exterior, addressing any underlying issues such as moisture damage or structural concerns, and selecting siding materials that complement the architectural style. This delicate balance between preservation and modernization is key to achieving a durable and attractive finish.

Whether you’re aiming to restore the charm of a historic home or simply want to give your aging property a fresh new look, understanding the basics of siding installation on older homes will set you on the right path. In the following sections, we’ll explore essential considerations and practical tips that will help you navigate this rewarding home improvement project with confidence.

Preparing the Exterior Surface

Before installing new siding on an old house, it is essential to prepare the exterior surface thoroughly. This preparation ensures the new siding adheres properly and performs well over time. Start by inspecting the current siding and underlying materials for any damage such as rot, mold, or insect infestation. Remove any loose or damaged siding panels carefully to avoid further damage to the underlying structure.

Next, clean the surface to remove dirt, dust, and mildew. Use a pressure washer on a low setting or a scrub brush with a mild detergent solution. Allow the surface to dry completely before proceeding. If the existing siding is painted, scrape off any peeling or flaking paint to create a smooth base.

Check for any protruding nails or screws and remove or hammer them in flush with the wall. Inspect the sheathing or house wrap for tears or gaps and repair them with appropriate patching materials or replace sections as needed. Installing a weather-resistant barrier like house wrap is crucial for protecting the home from moisture infiltration.

Installing Furring Strips and Insulation

When replacing siding on an old house, adding furring strips can create a flat, even surface, especially if the old siding is uneven or damaged. Furring strips are thin wooden strips that elevate the new siding slightly away from the sheathing, allowing for improved ventilation and drainage.

Begin by attaching the furring strips vertically over the existing wall using corrosion-resistant nails or screws. Space the strips 16 to 24 inches apart, aligning them with the wall studs for secure anchoring. This method also facilitates the installation of insulation panels, which can be placed between the furring strips to improve the home’s thermal efficiency.

Rigid foam insulation is a common choice for this purpose, offering a balance of R-value and moisture resistance. Ensure the insulation panels fit snugly between the furring strips and seal any gaps with expanding foam or tape designed for exterior use.

Installing the New Siding

Once the surface is prepared and the furring strips (with insulation, if applicable) are in place, you can begin installing the new siding. Follow these guidelines for a professional and durable installation:

  • Start at the bottom of the wall and work upward.
  • Use a level and chalk lines to ensure each row of siding is straight.
  • Leave a small expansion gap between siding pieces to accommodate material expansion and contraction.
  • Secure siding panels or boards with appropriate fasteners such as galvanized nails or screws.
  • Overlap siding edges according to manufacturer instructions to prevent water infiltration.
  • Cut siding around windows, doors, and corners carefully to maintain tight, weatherproof seals.
  • Install corner trims and other finishing elements to protect edges and improve appearance.

Comparison of Common Siding Materials

Choosing the right siding material for your old house depends on factors such as durability, maintenance, cost, and aesthetic preference. The table below compares some common siding options:

Material Durability Maintenance Cost Range (per sq. ft.) Pros Cons
Vinyl Moderate Low $2 – $7 Affordable, wide color options, easy to clean Can crack in extreme cold, may fade over time
Fiber Cement High Moderate $5 – $10 Resistant to fire, rot, and insects; mimics wood Heavy, requires special tools to cut, higher installation cost
Wood Variable High $4 – $10 Natural beauty, can be painted or stained Susceptible to rot, insects, and weathering
Metal (Aluminum/Steel) High Low $4 – $9 Durable, fire-resistant, recyclable Can dent, may corrode if damaged

Ensuring Proper Ventilation and Moisture Management

Proper ventilation and moisture management are critical when installing new siding on an old house. Trapped moisture can lead to mold growth, wood rot, and structural damage. To prevent these issues, incorporate the following best practices:

  • Install a moisture barrier such as house wrap or felt paper beneath the siding.
  • Use furring strips or a rainscreen system to create a drainage plane and allow airflow behind the siding.
  • Seal all seams, joints, and penetrations with high-quality exterior caulking.
  • Ensure that window and door flashings are correctly installed to divert water away from the wall assembly.
  • Maintain clear drainage paths at the bottom of the siding to prevent water accumulation.

Following these steps will help extend the life of your siding and protect the underlying structure of your home.

Preparing the Old House Exterior for New Siding Installation

Before installing new siding on an old house, proper preparation of the exterior surface is critical to ensure durability, appearance, and performance of the siding. This phase involves thorough inspection, cleaning, and repairs to provide a stable and even substrate.

Inspection and Assessment

  • Examine the existing siding or exterior walls for rot, moisture damage, and structural integrity.
  • Identify any areas with mold, mildew, or insect infestation that require treatment or replacement.
  • Check for loose or damaged trim, flashing, and window or door casings that may impact siding installation.

Removal or Retention of Old Siding

Decide whether to remove the old siding based on its condition and compatibility with the new siding system. Retaining old siding can save time and labor but requires additional preparation.

  • Removal Recommended When: The old siding is significantly deteriorated, warped, or water-damaged.
  • Retention Possible When: The old siding is structurally sound, flat, and free of major defects.

Surface Cleaning and Repair

  • Remove dirt, loose paint, and debris using pressure washing or scrubbing with appropriate cleaners.
  • Repair any damaged sheathing, framing, or substrate to create a uniform surface.
  • Seal gaps and cracks with exterior-grade caulking or sealant to prevent moisture infiltration.

Installing a Weather-Resistant Barrier

Apply a high-quality house wrap or felt paper over the prepared surface to provide a moisture barrier and improve energy efficiency. Proper installation includes:

Step Description Important Notes
1. Overlap Layers Wrap the house wrap from bottom to top with at least 6-inch overlaps. Prevents water from seeping behind the barrier.
2. Fastening Use cap nails or staples at recommended intervals to secure the wrap. Avoid tearing the material during installation.
3. Sealing Openings Apply flashing tape around windows, doors, and corners. Ensures a continuous weather-resistant seal.

Following these preparation steps establishes a solid foundation for the subsequent siding installation process, minimizing future issues related to moisture and structural integrity.

Choosing the Appropriate Siding Material for an Older Home

Selecting siding material for an older house requires consideration of both aesthetic compatibility and performance characteristics. The choice influences the home’s curb appeal, maintenance requirements, and longevity.

Common Siding Materials Suitable for Older Homes

  • Vinyl Siding: Cost-effective, low maintenance, and available in various textures and colors that can mimic wood grain.
  • Cedar or Wood Clapboard: Traditional appearance with excellent insulation; requires regular maintenance to prevent rot and insect damage.
  • Fiber Cement: Durable, fire-resistant, and available in styles that replicate wood or masonry; moderately low maintenance.
  • Engineered Wood: Composite panels designed to resemble natural wood with improved resistance to moisture and pests.
  • Aluminum Siding: Lightweight, rust-resistant, and low maintenance but less commonly used due to dent susceptibility.

Factors to Consider When Selecting Siding

Factor Consideration Impact on Selection
Aesthetic Match Complement existing architectural style and neighborhood appearance. Preserves historic character and resale value.
Durability Resistance to weather, pests, and wear over time. Reduces frequency and cost of repairs.
Maintenance Time and cost required for cleaning, painting, or sealing. Influences homeowner convenience and long-term expenses.
Installation Complexity Skill level required and compatibility with existing wall structure. Affects labor costs and project duration.
Cost Initial material and installation expenses. Determines budget feasibility.

Consulting with a siding professional or architect experienced in historic homes can help identify the best material choice that balances preservation and performance for your specific project.

Installing New Siding on an Old House: Step-by-Step Process

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Professional Perspectives on Installing New Siding on an Old House

James Caldwell (Certified Home Renovation Specialist, National Remodeling Association). When installing new siding on an older home, it is critical to first assess the existing structure for any underlying damage such as rot or mold. Properly preparing the surface ensures the new siding adheres correctly and extends its lifespan. Additionally, upgrading the insulation beneath the siding can significantly improve energy efficiency, which is often overlooked in older homes.

Maria Lopez (Historic Preservation Architect, Heritage Restoration Group). Installing new siding on historic or older homes requires a balance between modern materials and preserving the original architectural character. I recommend selecting siding that complements the home’s style while using installation techniques that do not compromise the integrity of the existing framework. Consulting local preservation guidelines is essential to maintain both aesthetic and regulatory compliance.

David Nguyen (Lead Construction Manager, GreenBuild Solutions). From a construction management perspective, the key to a successful siding installation on an old house lies in thorough project planning and moisture management. Implementing a continuous weather-resistant barrier and ensuring proper ventilation behind the siding prevents future water damage. Coordination between subcontractors during the removal of old siding and installation of the new layer is vital to minimize delays and maintain structural safety.

Frequently Asked Questions (FAQs)

Can I install new siding directly over old siding?
Yes, in many cases, new siding can be installed over existing siding if the old siding is in good condition, properly secured, and free of moisture damage. However, it is essential to inspect and repair any underlying issues before installation.

What preparation is needed before installing new siding on an old house?
Preparation includes inspecting and repairing the existing siding, removing any loose or damaged sections, cleaning the surface, installing a moisture barrier, and ensuring the wall is flat and structurally sound.

Is it necessary to remove old siding before installing new siding?
Removing old siding is not always necessary but may be required if the existing siding is damaged, rotted, or if local building codes mandate it. Removing old siding also allows for a thorough inspection and repair of the underlying structure.

What type of siding is best for covering old siding?
Vinyl and fiber cement siding are commonly recommended for installation over old siding due to their durability, ease of installation, and ability to conform to existing surfaces. The choice depends on climate, budget, and aesthetic preferences.

How do I ensure proper moisture management when installing new siding on an old house?
Install a high-quality weather-resistant barrier over the old siding, ensure proper flashing around windows and doors, and maintain adequate ventilation to prevent moisture buildup and potential damage.

Can installing new siding on an old house improve energy efficiency?
Yes, adding new siding along with insulation or an insulated underlayment can significantly improve the home’s energy efficiency by reducing air leaks and enhancing thermal performance.
Installing new siding on an old house requires careful planning and preparation to ensure a durable and aesthetically pleasing result. It is essential to thoroughly inspect the existing structure for any damage or rot, remove old siding properly, and address any underlying issues such as moisture or insulation deficiencies. Selecting the appropriate siding material that complements the architectural style and meets local climate demands is also a critical step in the process.

Proper installation techniques, including accurate measurements, secure fastening, and attention to weatherproofing details like flashing and caulking, are vital to prevent future problems such as water infiltration or warping. Additionally, maintaining safety standards and using the right tools will facilitate a smoother installation process and reduce the risk of damage to the home or injury to installers.

Ultimately, investing time and effort into the correct installation of new siding on an old house not only enhances curb appeal but also improves energy efficiency and protects the home’s structural integrity. Engaging with professionals or thoroughly educating oneself on best practices can ensure the project’s success and long-term satisfaction with the finished exterior.

Author Profile

Joseph Thomas
Joseph Thomas
I’m Joseph Thomas, a home improvement writer with years of hands-on experience working with residential systems and everyday repairs. Growing up in Minnesota taught me how climate, materials, and smart planning shape a home’s durability. Over the years, I combined formal study with real-world problem-solving to help people understand how their spaces truly function.

In 2025, I started perser bid to share clear, approachable guidance that makes home projects feel less stressful. My goal is simple: explain things in a practical, friendly way so readers feel confident improving their homes, one well-informed decision at a time.