Without a primer, asphalt will struggle to do what?

The emphasis on the necessity of a primer lies in its role as a surface preparation agent that enhances the adhesion of roofing materials. When it comes to applying asphalt to a concrete surface, the absence of a primer can significantly hinder the penetration of the asphalt into the porous surface of the concrete.

Concrete is inherently absorbent, and without the use of a primer, asphalt may not properly bond or penetrate the surface effectively. Primers fill voids and create a more favorable interface for the asphalt, allowing it to bond securely, which is crucial for the longevity and performance of the roofing system. When performed correctly, the primer allows the asphalt to penetrate and adhere better to the concrete, ensuring a stronger and more durable roofing installation.