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EPDMSI practice questions - frequently asked questions

Plain answers about how EPDMSI Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real EPDMSI exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The EPDMSI exam spans 8 domains: Project safety (10.5% of the exam); General work practices and communications (3.5% of the exam); System materials (10.5% of the exam); Tools and equipment (2.3% of the exam); Materials installation (41.9% of the exam); Membrane seaming (14% of the exam); Flashings and accessories installation (14% of the exam); Job-site housekeeping (3.5% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Materials installation 41.9%; Membrane seaming 14%; Flashings and accessories installation 14%; Project safety 10.5%; System materials 10.5%; General work practices and communications 3.5%; Job-site housekeeping 3.5%; Tools and equipment 2.3%.

The EPDMSI exam has 60 questions and is completed in 1 hour. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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