Jump to content

CU sheet metal thickness equivalent to AL

Mike Lamb

Recommended Posts

When installing an open valley, use 16 oz. copper flashing at a

minimum (or its equivalent) over WinterGuard? Waterproofing

Shingle Underlayment (or its equivalent). Preformed ?W? style

valleys are preferred (Figures 16-11 and 16-12).

The aluminum used on this valley looks like typical .0145 coil stock. What is the equivalent AL to 16 oz. CU?

This is a Certainteed Grand Manor Shangle roof. There are so many problems on this job that the valley issues are just piling on. I am very aware of the underlayment issues. The builder is not going to be happy with what his roofers did and did not do.

Click to Enlarge

29.23 KB

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...