Plastic wood is primarily recommended for which purpose?

Plastic wood is a composite material that is often used for its durability and weather resistance, making it particularly useful in various applications. It is primarily recommended for filling nail holes due to its ability to expand and contract with temperature changes without cracking or shrinking. This feature allows it to effectively blend with the surrounding surface, providing a smooth finish that can be easily sanded and painted after application.

While plastic wood can also be used for outdoor structures and as a filler for cracks, its specific formulation for filling nail holes means it retains its appearance and adhesion over time, making it the go-to choice for this particular function. The use of plastic wood in furniture building is less common, as traditional materials might be preferred for their aesthetics and structural properties. Therefore, when it comes to the intended use of plastic wood, filling nail holes stands out as its primary application.