What can be concluded about shingles on roofs with a pitch exceeding 4/12?

When considering shingles on roofs with a pitch exceeding 4/12, it is essential to understand the behavior of asphalt shingles in relation to the roof's angle. As the pitch increases, shingles that rely on adhesion to bond may not adhere effectively due to the weight and angle of the material. The steeper pitch can prevent the adhesive from properly sealing, which is necessary for shingles to perform optimally, especially in preventing leaks and ensuring longevity.

Shingles are designed with a certain level of bonding ability, and when the pitch exceeds this critical threshold, factors such as gravity and the angle of installation can compromise the adhesive properties. Thus, the ability of the adhesive to bond the shingles becomes more critical on steeper roofs, and reliance solely on the weight of the shingles for adhesion may not suffice. This highlights the importance of proper installation techniques, which may include ensuring that the adhesive is adequately activated, especially in pitched roofs, to provide a secure and effective bonded surface.

Other considerations such as the fragility of the shingles or the need for additional support arise, but they do not directly address the unique challenges presented by an increased roof pitch in terms of adhesive bonding. Hence, the correct conclusion revolves around the bonding capacity of shingles compared to the pitch of the roof