Understanding Your Existing Wall System
Before selecting new siding or cladding, it is critical to thoroughly investigate the existing wall system. This includes identifying the type of sheathing, the presence and condition of a weather-resistive barrier (WRB), insulation, and the structural integrity of the studs or framing. For renovation projects, water damage, rot, or pest infestations in the existing wall assembly can significantly impact material choices and installation methods.
Documenting the current conditions, including any signs of moisture intrusion or degradation, helps inform the scope of work and ensures that the new facade addresses any pre-existing issues. This initial assessment is crucial for preventing future problems and ensuring the longevity of your renovation.
Evaluating Material Options: Wood, Modified Wood, and Composite
Lumber Plus offers a range of siding and cladding materials suitable for facade renovations, each with distinct characteristics.
Thermally modified wood, such as Scandinavian thermally modified wood, offers enhanced stability and durability compared to untreated wood, making it a suitable option where resistance to expansion and contraction is desired. Species like thermally modified Ayous and Ash provide a clean grain and contemporary aesthetic. These materials are engineered for stability, which can be beneficial in climates with significant temperature fluctuations.
Hardwood options like Ipe, Cumaru, Garapa, Angelim, Jatoba, and Tigerwood offer natural beauty and inherent density. Brazilian hardwoods are known for their distinct grain patterns and robust appearance. Each species presents a unique color and figure, allowing for diverse design expressions.
Composite cladding, such as NORX, provides a manufactured alternative that often mimics the look of natural wood but with different maintenance considerations. These products are designed for consistency and can be a practical choice for certain renovation goals.
Maximo Accoya, an acetylated wood product, offers another option for stability and durability. It provides enhanced performance characteristics for siding and cladding applications.
Considering Profiles and Aesthetics
The profile of your chosen siding or cladding material plays a significant role in the overall aesthetic of your renovated facade. Different profiles create varying shadow lines and visual textures. For example, a tongue-and-groove profile can offer a clean, flush appearance, while a shiplap or bevel profile can create distinct horizontal or vertical lines.
Consider how the profile will complement the architectural style of your home and the surrounding environment. The scale of the boards and the depth of the shadow lines can dramatically alter the perception of the facade, from a sleek modern look to a more traditional, textured finish. Lumber Plus offers in-house milling, allowing for a range of profiles and dimensions.
Integrating with Existing Fenestration and Details
A facade renovation requires careful planning around existing windows, doors, and other architectural details. The new siding or cladding must integrate seamlessly with these elements to ensure proper weatherproofing and a finished appearance. This often involves detailing trim boards, flashing, and sealants to prevent water intrusion and maintain the integrity of the wall assembly.
Consider how the new material will terminate at corners, soffits, and the base of the wall. Proper clearances at grade and adequate drainage are essential for preventing moisture-related issues. The choice of corner treatment, whether mitered, butt joints with trim, or pre-fabricated corner pieces, will also influence the final look.
Worked Example: Facade Renovation for a 20-Foot Wall Section
Imagine renovating a 20-foot long by 9-foot high wall section on a home. The goal is to replace existing worn siding with thermally modified Ayous cladding in a horizontal shiplap profile, with a nominal board width of 5.5 inches (actual coverage approximately 5 inches).
First, calculate the total area: 20 feet * 9 feet = 180 square feet. For horizontal installation, consider the linear footage needed. A 5-inch coverage board means 12 boards per foot of height (12 boards/foot * 9 feet = 108 linear feet of coverage for a 1-foot wide strip). For a 20-foot length, this means approximately 108 linear feet * 20 = 2160 linear feet of cladding. To account for cuts, waste, and potential board defects, it's advisable to add a waste factor, typically 10-15%. For this example, let's use 10%: 2160 linear feet * 1.10 = 2376 linear feet. This would be the approximate linear footage to order, considering standard board lengths available. Always confirm actual board coverage and available lengths when ordering.
The existing wall system would be inspected for a weather-resistive barrier and structural soundness. If the existing WRB is compromised, it would be replaced or supplemented before installing new furring strips for the rainscreen assembly. Fasteners appropriate for the specific cladding material and substrate would be selected, and a detailed plan for window and door trim integration would be developed.
Before you order
- Assess existing wall conditions (sheathing, WRB, insulation, structure).
- Identify any moisture damage, rot, or pest issues.
- Determine desired aesthetic (modern, traditional, textured, smooth).
- Select material type: thermally modified wood, hardwood, or composite.
- Choose a profile (shiplap, tongue-and-groove, bevel, etc.).
- Plan for integration with windows, doors, and other penetrations.
- Detail corner treatments and base-of-wall clearances.
- Calculate required material quantities, including waste factor.
- Confirm local building codes and best practices for wall assemblies.
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 Duluth, MN. 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 thermally modified wood?
Thermally modified wood undergoes a high-heat treatment process in the absence of oxygen, which alters the wood's cellular structure. This process enhances its dimensional stability, making it more resistant to shrinking, swelling, and decay. It also often results in a darker, more uniform color throughout the wood. It is distinct from acetylated wood like Accoya.
Do I need a rainscreen assembly for my facade renovation?
A rainscreen assembly involves creating a ventilated air gap behind the siding or cladding. This gap allows moisture to drain and air to circulate, promoting drying and reducing the risk of water intrusion into the wall assembly. While not always strictly mandated by code for every renovation, rainscreen assemblies are widely considered a best practice for improving durability and moisture management, especially in climates with significant rainfall or humidity. It is recommended to consult with a professional to determine the best approach for your specific project and local conditions.
How do I account for waste when ordering siding and cladding?
It is standard practice to order extra material to account for cuts, waste, and potential defects. A common recommendation is to add 10-15% to your calculated linear or square footage. For complex installations, intricate patterns, or projects with many windows and doors, a higher waste factor might be prudent. Always measure carefully and discuss waste factors with your supplier based on the specific product and profile you choose.
Ready to Plan Your Facade Renovation?
Request a material quote for your project. Provide your project dimensions, desired profile, and ZIP code to receive an accurate estimate and confirm current availability and service options for siding and cladding materials.
Request a material quote →