Are polymer trim members attached to a building using mastic and mechanical fasteners?

Polymer trim members, often used in construction for their durability and low maintenance, can indeed be attached to a building using both mastic and mechanical fasteners. This combination of methods provides a strong and reliable means of securing the trim while accommodating various installation conditions.

Using mastic allows for a flexible bond that can help to accommodate any expansions or contractions due to temperature changes. Meanwhile, mechanical fasteners, such as screws or nails, provide additional physical strength and stability, particularly in areas that may be subjected to wind or other forces.

This dual approach ensures that the polymer trim remains securely attached over time, minimizing the risk of displacement or damage. The effective use of both materials demonstrates good practice in construction, taking advantage of the benefits offered by each method. Therefore, the answer confirming that both mastic and mechanical fasteners are used is correct.