Running electrical on running boards in loft - GreenBuildingAdvisor

Running electrical on running boards in loft mtwantinghelp | Posted in Building Code Questions on March 4, 2026 04:47pm I have plans for a timber frame structure on a slab. Is it possible to run romex in the loft — over the t and g and structural joists, and below a plywood subfloor covered with carpet? I was hoping to add running boards parallel to the t and g and straight into the joists. There’d probably be some that came up perpendicular for plywood support, but then the romex would take priority and I believe it needs at least 1 1/4” of space from anything, and so I’m not sure how stapling it straight to the t and g would go. 2021 international code here. gluing and screwing everything. Does the romex need more than a staple and I’d probably go to 1.5” space?  This is how I was hoping to get a meaningful amount of romex to the other side of the build, and it’d hopefully go to some recessed lights. Answer GBA Detail Library A collection of one thousand construction details organized by climate and house part Search and download construction details Join the leading community of building science experts Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field. Start free trial Related Questions Running Electrical Wire to Avoid Drilling Heat Pump Not Running Efficiently Running Electrical Wiring Through an Insulated Slab Running Electrical Wire into Surface-Mounted Receptacle Replies Log in or cre...