40 Hour Property and Building Inspection Practice Test

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Study for the 40 Hour Property and Building Inspection Test. Use flashcards and multiple choice questions, each with hints and explanations. Prepare effectively!

Practice this question and more.


What is the most common source of failure on EPDM roofs?

  1. Flashings

  2. Decking

  3. Seams

  4. Underlayment

The correct answer is: Seams

The most common source of failure on EPDM (ethylene propylene diene terpolymer) roofs is indeed seams. Seams are critical components in the installation of EPDM roofing systems, as they are where two sheets of membrane meet. Proper sealing and adherence at these seams are essential to ensure water does not penetrate. Over time, seams can be susceptible to a variety of factors, including thermal expansion and contraction, environmental stress, and aging of the adhesive used during installation. If seams are not correctly sealed, or if the materials degrade due to UV exposure or temperature fluctuations, they can fail, leading to leaks and potential structural damage. This makes addressing seam integrity a top priority for long-term performance and durability of an EPDM roofing system. Understanding the common failure points, particularly in seams, is crucial for anyone involved in roof inspection and maintenance.