Raywesebaum
Registered User
Can you drill through a steel joist for plumbing?
It is an existing building that has 8" of spray insulation so if there are holes already no way to see them.Any steel joist I've ever seen already have a lot of open spaces, why would you need to drill through 1?
Roof and commercialFloor , wall , or roof framing members? Residential or commercial?