Learn Which Slope to Install Shingles on First for a Closed Valley System

Roofers must install shingles on the right slope when installing a closed valley system. Adam and Isaac share on which roof slope shingles need to be installed first for this valley system.

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• #howto_style
• #installing_shingles
• #valley_shingles
• #closed_valleys
• #half_cut_valley
• #which_shingle_slope_do_i_install_first_in_a_valley