Electrical with Poly-Iso Foam?

[CV428]

My building is going up next week. I took the week off to organize and finish out some areas. Electricity is a project for next year (200' trench through solid granite, plus an extra distribution box at my meter, going to be lots of fun).

Under normal circumstances, I would tell anyone to run electrical before insulation. My plan for electrical is MC or conduit runs to external (non-flush) receptacles. In this manner, the supporting structure stays hole-free (no pass-thrus) and everything is fully accessible regardless of insulation. So, I don't see any reason why I can't insulate with 2.5" PolyISO foam board next week. Are there any factors I'm not considering, or reasons why I should delay on insulation?

 

[PCustoms]

Ridgid foam insulation in the wall cavity shouldn't be an issue if you are surface mounting everything.

 

[crooney1189]

Where were you able to find 2.5" rigid foam boards? I looked and called around to all the local places around me here in FL and couldn't find any. 2" was the closest I was able to source.

 

[CV428]

Where were you able to find 2.5" rigid foam boards? I looked and called around to all the local places around me here in FL and couldn't find any. 2" was the closest I was able to source.

There's a guy in my town that sells factory seconds for fractions of box-store prices. Check FB Marketplace- there might be one near you. It's a smart side gig, stuff is light, easy to ship, easy to buy factory seconds...

 

[racecougar]

Are there any factors I'm not considering, or reasons why I should delay on insulation?

Nope. You're good to go.

 

[PWC Repair]

That's how I did mine.