Evaluating Existing Wall Conditions
The foundation of any successful facade renovation is a comprehensive assessment of the existing wall assembly. Begin by checking for signs of moisture intrusion, such as water stains, peeling paint, or mildew on both the exterior and interior walls. Look for areas where the existing siding is loose, warped, or cracked, which can indicate underlying rot or structural movement. Pay close attention to penetrations like windows, doors, and utility lines, as these are common points for water entry.
Beyond surface observations, understand the composition of the existing wall. Is it a solid masonry wall, wood frame, or a combination? Identify the type of sheathing, if any, and the presence and condition of any existing weather-resistive barrier (WRB). This information is crucial for determining how new cladding will attach and how the overall wall system will manage moisture and air.
Understanding Burlington's Climate Considerations
Burlington, VT experiences distinct seasonal changes, including cold winters with significant snowfall and freeze-thaw cycles, and warm, humid summers. These conditions place specific demands on exterior materials. Siding and cladding must be able to withstand repeated expansion and contraction without cracking or delaminating. Resistance to moisture absorption is also key to prevent rot, mold, and frost damage.
Consider materials that are dimensionally stable and offer good durability in fluctuating temperatures. The design should also facilitate proper drainage and ventilation, especially important in managing snow melt and summer humidity. For walls exposed to direct sunlight or strong winds, selecting materials with inherent UV resistance and robust fastening systems is advisable.
Material Options for Renovation
Lumber Plus offers a range of siding and cladding materials suitable for facade renovations, each with distinct characteristics.
Thermally Modified Wood: This material, such as thermally modified Ayous or Ash, undergoes a heat treatment process that enhances its dimensional stability and resistance to decay. It offers a natural wood aesthetic that can be stained or allowed to weather to a silver-gray patina. It's a good choice for those seeking a natural look with improved performance against moisture and temperature fluctuations. Scandinavian thermally modified wood also offers a Nordic character engineered for various exposures. (See: /thermally-modified-wood)
Maximo Accoya: Accoya is an acetylated wood product known for its exceptional durability and stability. It resists rot and insect attack and maintains its form well under varying environmental conditions. Maximo Accoya provides a high-performance option for facades requiring long-term resilience and a premium appearance. (See: /products/maximo-accoya)
Brazilian Hardwood: Species like Ipe, Cumaru, Garapa, Angelim, Jatoba, and Tigerwood offer natural density and strength. These hardwoods are inherently resistant to decay and insects, providing a robust and long-lasting facade. They typically feature bold grain patterns and can be maintained with oil finishes to preserve their color or allowed to weather naturally. (See: /siding-and-cladding)
Norx Composite Cladding: Norx composite materials offer a low-maintenance alternative to natural wood. Available in various profiles and colors, composite cladding resists fading, cracking, and insect damage, making it a practical choice for homeowners seeking minimal upkeep. (See: /brands/norx)
Integrating with Rainscreen Principles
For many facade renovations, especially in climates like Burlington's, incorporating a rainscreen assembly is a best practice. A rainscreen system creates a ventilated air gap behind the cladding, allowing moisture to drain and walls to dry. This helps prevent moisture accumulation within the wall assembly, reducing the risk of rot, mold, and premature material degradation.
When planning a renovation, assess if the existing wall can accommodate a rainscreen gap. This typically involves furring strips installed over the weather-resistive barrier. The choice of cladding profile and fastening method will also influence the rainscreen design. While not always feasible for every renovation, understanding its benefits can help inform decisions about the extent of the facade overhaul.
Planning for Corners, Openings, and Transitions
The success of a facade renovation often lies in the details. Pay careful attention to how the new siding or cladding will terminate at corners, around windows and doors, and at transitions with other materials or the foundation. Proper flashing and trim are essential to prevent water intrusion at these vulnerable points.
Consider the aesthetic impact of these details. Will corner boards be used, or will the cladding be mitered? How will window and door casings integrate with the new facade? Ensure that all detailing provides a continuous weather-resistive layer and allows for proper drainage, especially in areas prone to snow buildup.
Before you order
- Have you thoroughly inspected the existing facade for moisture, rot, and structural issues?
- Is the existing weather-resistive barrier (WRB) intact, or does it need replacement/upgrade?
- What is the condition of the existing sheathing and framing?
- Have you considered the local climate (freeze-thaw, humidity, sun exposure) in your material selection?
- Is a rainscreen assembly feasible and beneficial for your renovation project?
- What aesthetic goals do you have for the renovated facade (e.g., natural wood, low-maintenance composite, specific color)?
- How will the new cladding integrate with windows, doors, corners, and the foundation?
- Have you reviewed manufacturer installation guidelines for your chosen siding/cladding material?
- Have you accounted for necessary trim, flashing, and fastening systems in your material list?
- Do you have a plan for managing potential lead paint or asbestos if present in older existing materials?
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 Burlington, VT. Ask our team to confirm availability, delivery to your ZIP code and which branch can support your order.
Questions to help you decide
Do I need to remove all existing siding before installing new cladding?
In many renovation scenarios, especially if there are signs of rot, moisture damage, or an inadequate weather barrier, removing the existing siding is recommended. This allows for a thorough inspection of the underlying wall structure, repair of any damage, and installation of a proper weather-resistive barrier and furring strips for a rainscreen system. In some cases, if the existing siding is sound and flat, new cladding might be installed over it, but this should only be done after a professional assessment confirms it won't trap moisture or compromise the new system's performance.
How do I choose between natural wood and composite cladding for a renovation?
The choice depends on your priorities. Natural wood, such as thermally modified wood or Brazilian hardwoods, offers unique grain patterns and character, and can be stained or allowed to weather naturally. It typically requires more maintenance (e.g., re-oiling) to preserve its original color. Composite cladding, like Norx, is designed for low maintenance, resisting rot, insects, and often fading, making it a good choice for those seeking minimal upkeep and consistent appearance. Consider the desired aesthetic, budget, and long-term maintenance commitment when making your decision.
What is the importance of a weather-resistive barrier (WRB) in a facade renovation?
A weather-resistive barrier (WRB) is a critical component of any exterior wall system, especially in a climate like Burlington's. It acts as a secondary defense against water intrusion, catching any moisture that penetrates the outer cladding layer and directing it downwards and out of the wall assembly. During a facade renovation, it's an opportune time to ensure a continuous and properly installed WRB is in place, protecting the sheathing and framing from moisture damage and contributing to the overall durability and energy performance of the building.
Request a Material Quote for Your Facade Renovation
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