Running Conduit Through Roof

Lic conduit embedded within or directly underneath roof assemblies.

Running conduit through roof.

These hangers hold the conduit off the wall so it can run straight into boxes with no offset. If the vent pipe isn t installed properly the roof may leak through or around the pipe penetration leading to costly repairs. When water drains air must replace the space that was taken up by the water. It is also used in unfinished areas like basements crawlspaces and attics and for surface mounted installations outdoors.

To run the wires inside rigid conduit you ll need a hacksaw a pipe bender capable of bending 1 2 in. Occasionally due to attic configuration or other challenges some visible conduit is unavoidable. Vent pipes provide this air by running outside the structure of the house. Rigid conduit with an outside diameter of 3 4 in and a fish tape long enough to reach through the buried pipe.

We have literally hundreds of good photos. Also cutting and roof system removal. Mounting conduit on existing flat roof any time you see a thin black line to the left of a paragraph in the nec it means that it s new or the wording has changed. Check out our website photo gallery if you want to see more.

A note on conduit. Either rigid or flexible conduit protects the wires and is used in exposed locations such as along the exterior surface of a wall. Running wires inside rigid conduit. Conduit runs are hidden under the panels and inside attics not run over the top of the roof.

Seanb 1 don t forget the coil of cable and add a few ferrite toroids over the cable as well. Although looking at it now the 2008 uses shaded sections for new or modified wording so the thin line might just be for new. Remove the conduit center the strap between the marks and attach it with a screw. To install conduit hangers hold the conduit against the wall where you want it and make a mark on the top and bottom where the hanger will go.

Running a vent pipe out of the roof takes some careful preparation. By way of comparison the wall thick ness of 1 2 inch thick metallic conduit is comparable to the metal thickness of a 20 gauge steel roof deck. All will help attenuate the let through energy. Self cutting or self drilling roof fasten ers can readily penetrate metals of these thicknesses.