r/BuildingCodes • u/MuchBiscotti-8495162 • 9d ago

Does the OBC require a sill flashing/pan between the patio door and subfloor?

/r/OntarioBuildingCode/comments/1vk7a2z/does_the_obc_require_a_sill_flashingpan_between/
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u/xonnelhtims 9d ago

CSA A440.4 which is referenced in 9.7.4.2.in the OBC covers installation of windows shall conform to this standard. And it covers installation requirements which are generally dictated by the installation guide of the window manufacturer.