Thermally Modified Wood for Commercial Entrances

Why Consider Thermally Modified Wood for Commercial Entrances?

Commercial entrances are focal points that define a building's character and welcome visitors. The choice of cladding material here is crucial for both first impressions and long-term performance. Thermally modified wood provides a natural material option that can complement various architectural styles, from modern to rustic.

The thermal modification process aims to reduce the wood's tendency to absorb moisture, which can lead to swelling and shrinking. For an entrance, where consistent appearance is valued, this improved stability can contribute to a more predictable material performance. Additionally, the process is designed to increase the wood's resistance to decay, which is a practical benefit for any exterior application exposed to the elements.

While thermally modified wood offers these advantages, it's important to understand that it is still wood. It will naturally weather over time, developing a silver-gray patina if left unfinished. This natural aging can be a desirable aesthetic, or a finish can be applied to maintain the original color. The decision depends on the specific design intent for the commercial entrance.

Selecting Profiles for Visual Impact and Durability

The profile of the thermally modified wood cladding significantly influences both the visual texture and the practical durability of a commercial entrance. Different profiles offer varying shadow lines, installation methods, and levels of protection against wear.

For a clean, modern aesthetic, a Tongue and Groove (T&G) profile can create a seamless surface with minimal gaps. This can be beneficial in areas where a smooth, continuous look is desired. The interlocking nature of T&G also provides a degree of protection at the joints, which can be useful in high-traffic areas where edges might be prone to chipping.

Shiplap profiles, with their overlapping design, create distinct horizontal or vertical lines and can offer a robust appearance. The overlap helps shed water and provides a strong visual rhythm. For commercial entrances, a shiplap profile can add depth and character, while its inherent design can offer some protection against direct impact to board edges.

Rainscreen profiles are designed to create a ventilation gap behind the cladding, promoting air circulation and drainage. While this is primarily a moisture management strategy for the overall wall assembly, the profiles themselves often feature robust dimensions that can withstand the rigors of a commercial setting. The specific dimensions and reveal of a rainscreen profile can also contribute to the architectural expression of the entrance.

Consider the expected traffic and potential for physical contact at the entrance. Profiles with thicker dimensions or robust interlocking features may offer greater resistance to everyday wear and tear. For example, a 1x6 T&G profile might be considered for a feature wall around an entrance, while a more substantial 1x8 shiplap could be used for lower-level cladding that is more likely to experience contact.

Finishing Options and Maintenance for Commercial Use

The finishing and maintenance plan for thermally modified wood at a commercial entrance directly impacts its long-term appearance and performance. Untreated, thermally modified wood will gradually weather to a silver-gray patina when exposed to UV radiation and moisture. This natural change is often desired for certain architectural styles.

If the original wood color is to be maintained, a UV-inhibiting finish will be necessary. These finishes require periodic reapplication, the frequency of which depends on the specific product, exposure to sunlight, and local climate conditions. For a commercial entrance, a consistent maintenance schedule is important to ensure the finish remains effective and the appearance is preserved.

Regular cleaning is generally recommended to remove dirt, grime, and environmental pollutants that can accumulate on any exterior surface. For a commercial entrance, where foot traffic is constant, this routine cleaning can help maintain the cladding's aesthetic appeal. Minor scuffs or marks can sometimes be addressed with light cleaning or touch-up, depending on the finish applied.

Planning for Access and Durability: A Hypothetical Example

Consider a commercial building entrance with a primary access point that is 10 feet wide and 8 feet tall. The design calls for thermally modified wood cladding on the wall sections immediately adjacent to the double doors, extending 4 feet on either side and reaching the full 8-foot height. This creates a 10-foot-wide by 8-foot-tall central opening, flanked by two 4-foot-wide by 8-foot-tall clad sections.

For this project, we select a NORX Thermally Modified Ash in a 1x6 Tongue and Groove (T&G) profile, with an actual face width of approximately 5 inches. The design intent is a vertical installation to emphasize height and create a clean, modern look. The project requires material for two 4-foot-wide sections, each 8 feet tall.

To calculate the needed material for one 4-foot-wide section (48 inches): Divide the width by the face width of the board: 48 inches / 5 inches/board = 9.6 boards. Since boards must be purchased as full units, 10 boards are needed per section. For the two sections, 20 boards are required. Each board needs to be 8 feet long. Therefore, 20 pieces of 1x6 T&G Thermally Modified Ash, 8 feet long, would be purchased.

This calculation assumes minimal waste and straight cuts. In practice, it is prudent to add a waste factor (typically 5-10%) to account for cuts, potential damage, or future repairs. For a commercial entrance, ensuring sufficient material for maintenance or replacement is a practical consideration.

Complementary Materials and Design Integration

Thermally modified wood can be effectively combined with other materials to create a dynamic and functional commercial entrance. Pairing it with materials like glass, metal, or stone can highlight its natural warmth and texture while enhancing the overall design.

For instance, large glass panels for doors or adjacent windows can provide transparency and light, contrasting with the solid wood cladding. Metal accents, such as door hardware, trim, or signage, can introduce a contemporary edge. Stone elements, whether as a base course or a feature wall, can ground the design and offer a different textural dimension.

When integrating thermally modified wood with other materials, consider the transitions and detailing. A clean, precise junction between materials contributes to a professional and durable finish. This might involve using metal flashing, reveals, or custom trim pieces to ensure a seamless interface and protect the wood's edges from excessive wear.

Before you order

• Determine the desired aesthetic: natural weathering or maintained color?
• Evaluate expected traffic and potential for physical contact at the entrance.
• Select a thermally modified wood profile that aligns with both design and durability requirements.
• Plan for the substructure and installation method suitable for commercial application.
• Establish a finishing and maintenance schedule for the entrance cladding.
• Consider how thermally modified wood will integrate with other entrance materials (glass, metal, stone).
• Calculate material quantities, including a waste factor for cuts and future needs.

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.

Questions to help you decide

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