Understanding Your Existing Wall Structure
Before selecting new siding or cladding, it is crucial to understand the existing wall structure. This involves identifying the type of sheathing, framing materials, and any existing insulation. For renovations, you may encounter various substrates, from plywood and OSB to masonry or concrete. Each of these requires specific considerations for attachment and compatibility with new cladding systems.
An inspection should also look for signs of water intrusion, rot, or insect damage. Addressing these issues before installing new materials is essential to prevent future problems. Documenting the condition of the existing facade provides a baseline for planning and helps determine if any structural repairs or upgrades are necessary.
Material Choices: Thermally Modified Wood, Hardwood, and Composite
Lumber Plus offers a range of siding and cladding materials suitable for facade renovations, each with distinct characteristics.
Thermally Modified Wood: Scandinavian thermally modified wood, such as Ayous or Ash, is engineered for enhanced stability and resistance to environmental factors. This process alters the wood's cellular structure, making it less prone to expansion, contraction, and decay. It's often chosen for its clean grain and contemporary aesthetic. Maximo Accoya is another acetylated wood option that offers stability for siding and cladding applications.
Brazilian Hardwoods: Species like Ipe, Cumaru, Garapa, Angelim, Jatoba, and Tigerwood offer natural durability and a rich, distinct appearance. These hardwoods are known for their strength and natural resistance to decay, making them suitable for impactful facades. Their density often requires specific fastening techniques.
Composite Cladding: Norx composite cladding provides a low-maintenance alternative that often mimics the look of natural wood. These materials are designed for consistency in appearance and can be a practical choice where reduced upkeep is a priority. Norx composite cladding is available in various profiles and finishes.
Each material has different profiles, such as tongue-and-groove, shiplap, or rainscreen options, which impact both appearance and installation methods. Consider the desired shadow lines and overall architectural style when making your selection.
Considering Baton Rouge Climate and Exposure
Baton Rouge experiences a humid subtropical climate with hot, humid summers and mild winters, along with significant rainfall and occasional severe weather. These conditions necessitate materials that can withstand moisture, high humidity, and potential UV exposure.
For facade renovations, selecting materials with inherent moisture resistance or those that can be effectively treated and sealed is important. Thermally modified woods and durable hardwoods are generally well-suited, but proper ventilation and drainage within the wall assembly are critical for all materials. Composite cladding also offers good performance in humid environments due to its engineered composition.
Planning for a Rainscreen Assembly
For many facade renovations, especially in humid climates, integrating a rainscreen assembly is a recommended approach. A rainscreen system creates a ventilated air gap behind the siding or cladding, allowing moisture to drain away and promoting airflow to dry the wall cavity. This helps protect the underlying structure from water damage and can improve the wall's thermal performance.
This system requires careful detailing around windows, doors, and corners to ensure continuous drainage and ventilation. Maximo Accoya and various thermally modified wood profiles are often specified for rainscreen facades.
Worked Example: Renovating a 20-Foot Wall Section
Consider a hypothetical renovation of a 20-foot wide by 9-foot tall section of an existing wall. The current siding is deteriorated, and the owner wants to upgrade to a thermally modified Ayous cladding with a shiplap profile. The existing wall is framed with studs at 16 inches on center, covered with plywood sheathing. A rainscreen assembly is desired.
First, the existing siding is removed, and the plywood sheathing is inspected for damage. Any damaged sections are repaired or replaced. A weather-resistive barrier (WRB) is applied over the sheathing. This provides a solid attachment point for the new cladding.
The Ayous shiplap cladding, typically supplied in various lengths, will be installed horizontally. For a 20-foot width, planning for staggered joints and minimizing waste is key. Assuming an average board length of 10 feet, two boards will be needed per horizontal course, with careful cutting and staggering of end joints over furring strips. For a 9-foot height, and assuming a 5.5-inch face exposure for the shiplap, approximately 20 courses (108 inches / 5.5 inches per course) will be needed. This translates to roughly 40 lineal feet of cladding per course, totaling 800 lineal feet for the section, before accounting for waste and cuts. Always order extra material to accommodate cuts and potential waste.
Before you order
- Assess existing wall condition: Check for structural integrity, moisture, rot, and insect damage.
- Identify substrate type: Plywood, OSB, masonry, or concrete will influence fastening methods.
- Consider Baton Rouge climate: Choose materials and assembly methods suitable for high humidity and rainfall.
- Evaluate material properties: Compare thermally modified wood, hardwoods, and composites for durability, appearance, and maintenance.
- Plan for rainscreen: Determine if a ventilated air gap is necessary for moisture management and thermal performance.
- Verify profile compatibility: Ensure chosen cladding profile (e.g., shiplap, tongue-and-groove) is appropriate for the desired aesthetic and installation.
- Calculate material quantities: Account for wall dimensions, board lengths, cuts, and waste (typically 10-15% extra).
Confirm installation details, approved uses and warranty terms in the current instructions for the exact product and profile. Your installer should verify the substrate, structure and applicable project requirements.
This is a planning guide for projects in Baton Rouge, LA. Ask our team to confirm availability, delivery to your ZIP code and which branch can support your order.
Questions to help you decide
What is the primary benefit of thermally modified wood for a facade renovation?
Thermally modified wood undergoes a high-heat treatment process that enhances its stability and resistance to decay, moisture absorption, and insect damage. This makes it a durable choice for exterior applications, particularly in humid climates like Baton Rouge, and helps reduce expansion and contraction.
Do I need a rainscreen assembly for my facade renovation?
While not always strictly required by code for all applications, a rainscreen assembly is highly recommended for facade renovations, especially in humid environments. It creates an air gap behind the cladding, allowing moisture to drain and promoting ventilation, which helps protect the wall structure from water damage and can improve overall wall performance.
How do I determine the right quantity of siding or cladding for my project?
To determine the quantity, measure the total area of the walls you plan to clad. Then, factor in the coverage per piece or square foot of your chosen material. It's crucial to add an allowance for waste, typically 10-15%, to account for cuts, mistakes, and potential future repairs. For complex geometries or specific profiles, a detailed takeoff plan is advisable.
Request a Material Quote for Your Facade Renovation
Ready to select siding and cladding for your Baton Rouge project? Provide your project dimensions, desired profile, and ZIP code to request a material quote. We can help you confirm current availability and service options for your specific needs.
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