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in-depth coverage of heating
Starting 3/12/2026 the 22nd edition can be used
The whole course is a 16 hours and part of which is taken online
Article 13)
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PSI - New Mexico GS-21 Roofing m in-depth coverage of heatingPSI New Mexico GS 21 Roofing Online Home Study Course Our Online Home Study Course includes: There are 60 questions in this examination. You will need to answer 45 questions correctly in order to pass. You are allowed 2 hours to complete this examination. NOTE: All Specialty Roofing Commercial Contractor candidates are required to pass the Business Management and Law for Contractors Examination and the GS 21 Roofing Examination. The Online Home Study
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