SECA Thermo-Wood A4R4 is a type of thermally modified wood that has been treated with a thermal modification process to improve its durability and stability. The A4R4 grade refers to the wood’s knot-free appearance and its resistance to decay and insects.

The thermal modification process involves heating the wood to a high temperature in a low-oxygen environment, which changes the wood’s cell structure and chemistry. This results in wood that is more resistant to decay, insects, and moisture. The A4R4 grade also indicates that the wood is free of knots and has a consistent colour and grain pattern.

SECA Thermo-Wood A4R4 can be used for a variety of applications, including exterior cladding, decking, and outdoor furniture. It is also suitable for interior applications such as flooring and wall panelling. The thermal modification process gives the wood a darker, more uniform appearance and can enhance its natural grain patterns.

One of the benefits of SECA Thermo-Wood A4R4 is its increased stability and resistance to warping, splitting, and cracking. The thermal modification process also reduces the wood’s tendency to expand and contract in response to changes in temperature and humidity. This makes it an ideal choice for outdoor applications where exposure to the elements can cause traditional wood to degrade over time.

SECA Thermo-Wood A4R4 is a sustainable building material, as it is made from renewable wood sources and the thermal modification process does not involve the use of harmful chemicals. It can be finished with a variety of coatings or stains to achieve the desired look and is available in a range of sizes and profiles to suit different applications.