In estimating shingles, waste considerations apply to which of the following?

When estimating shingles, waste considerations are important for both wood shingles and composite shingles due to the inherent nature of how these materials are installed.

Both types of shingles require careful cutting, fitting, and overlapping during installation, which typically results in some amount of waste. Factors such as the roof's pitch, shape, and complexity can further increase the amount of waste generated. Additionally, different manufacturers may have varying recommendations regarding the amount of waste to factor in based on their specific products and installation guidelines.

Since both materials exhibit these waste characteristics, it is essential for estimates to account for the potential waste when determining the total material needed for a roofing project. This helps ensure that there is enough material to complete the job effectively without running out or underestimating the requirements.