GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Clearances for rooftop solar on a flat roof

NICK KEENAN | Posted in General Questions on

Recently Fine Homebuilding had a “Know the Code” article on the requirements for the roof structure for solar panels. It’s here:

It seems everything assumes you have a pitched roof with a ridge. What if you have a flat (or nearly flat) roof? Do you need access to the ridge if you don’t have one?

I’m trying to see what the biggest array I can fit on my roof is.


GBA Prime

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.


  1. Expert Member
    ARMANDO COBO | | #1

    You must check with your bldg dep. Local fire codes may have different rules, but generally, 36" clearence all around from edge or inside parapets or walls.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |