Air-dried oak: Still available & still the best choice for many projects

Within the construction and joinery industries, there's a growing perception that air-dried oak is no longer readily available. This misconception has largely arisen due to changes within the market and the increasing prevalence of kiln-dried oak, as Hewins Oak discusses here

In recent years, many European oak sawmills have shifted their focus towards kiln-dried timber because the process is significantly faster and more efficient than traditional air-drying. The shorter drying time allows mills to increase stock turnover and supply larger volumes more quickly, making commercial sense for many suppliers. However, while kiln drying offers production efficiencies, it's not always the most suitable solution for every project.

Despite the widespread use of kiln-dried oak, air-dried oak remains essential for many applications. The two materials aren't interchangeable and specifying kiln-dried where air-dried oak is required can lead to significant performance issues.

The slower, more natural drying process provides several important advantages:

Superior stability for external use

Air-dried oak generally offers greater dimensional stability when used externally or in unheated environments. Having reached a natural equilibrium with its surroundings, it reacts less dramatically to changes in moisture and temperature, meaning this option is particularly well suited to exposed applications where long-term stability is essential.

Enhanced durability

The gradual loss of moisture helps preserve the timber's natural oils and resins, increasing its resistance to environmental stresses. This contributes to improved longevity in both structural and decorative applications.

Improved appearance

The slower drying process allows the timber to develop richer colour and a more distinctive grain pattern, enhancing its natural character. By comparison, kiln drying can reduce the intensity of the oak's natural colour and may diminish some of its visual warmth. Air drying also minimises internal stresses, reducing the likelihood of warping, cracking and checking.

Traditional authenticity

For heritage restoration and traditionally constructed buildings, air-dried oak is often the preferred choice. It helps preserve the authenticity and integrity of historic structures while delivering the performance expected of traditional materials.

Better workability

Air-dried oak is generally easier to work with, particularly when using hand tools. The natural drying process better preserves the timber's cellular structure, making it more responsive to shaping, carving and finishing.

Environmental benefits

Air drying is also a more sustainable process. It relies on natural airflow and ambient temperatures rather than the energy-intensive operation of drying kilns, resulting in a lower carbon footprint.

Although the air-drying process takes considerably longer than kiln drying, the additional time is essential for producing oak with the characteristics required for many external applications. Air-dried oak remains the preferred choice for products such as gates, exposed external doors, balustrades, cladding and decking and is frequently the ideal material for heritage restoration projects.

The team at Hewins Oak is committed to supplying the highest quality air-dried oak for projects where performance, authenticity and longevity matter. The company's experienced team understands the specific requirements of these applications and prides themselves on providing consistent, high-grade material for projects of every scale.

Contrary to the common belief that air-dried oak is difficult to source, Hewins Oak has maintained long-standing relationships with traditional European sawmills that continue to produce and stock substantial volumes of premium air-dried oak. As a result, the company is able to provide a reliable, continuous supply, ensuring that even the largest and most demanding projects can be supplied with confidence.

To find out more about Hewins Oak and to discuss individual requirements, call 01460 241 777, email sales@hewinsoak.com or visit the website: www.hewinsoak.com.