Loose hip and ridge tiles

[bigdog]

Is there a specification for hip and ridge tile movement?

Flat concrete tile roof, foam set and the top 1/4 of all of the hips the mortar was visibly separated /not just cracked.
When I pushed on this top area with my foot the top 1/4 of the row of hip tiles, which were fastened to the metal piece, it wiggled and moved as the metal piece under it moved / flexed.

I have never experienced this before and need help finding any reference that might address this. I don't know if re-pointing these tiles is all that's needed. Was the metal support installed improperly? The whitish color of the mortar suggest too much water when mixed.
Where can one access the FRSA manual online?

[Jerry Peck - Codeman]

[bigdog]

Thanks for the link Jerry

The hip and ridge tiles were only attached to the metal which of course is attached to the roof. The only thing that would keep them from moving as the metal flexed would be the pointing which was strange as I have never seen this before.

The mortar was colored gray like the tiles and the white efflorescence was excess water in the mix which I believe contributed to it failing.

David