Chimney roof braces

[hendoblade]

We're about to install a multi-fuel stove with a twin-wall flue going through a new roof of standard board/membrane/concrete tile construction. We're sure the chimney will need to be tall enough to require bracing. I'm clear about how the brace fits to the flue, but can't find any clues as to how you fix the bracing struts to the roof. There's no other surface near enough to fix to.
Help please!

 

[stuart45]

Fix them to the rafters.

 

[justlead1]

Hi. You may well need to drill hole through the tiles at a point where batten and rafter cross, then screw bracket on face of tile, using, s/steel screws into the timber below. However these anchor point will need some sort of weathering. Good Luck

 

[hendoblade]

Cheers. I'd suspected something like this, but was hoping to avoid penetrating the roof surface. Suppose nothing can be that clever!

Hi. You may well need to drill hole through the tiles at a point where batten and rafter cross, then screw bracket on face of tile, using, s/steel screws into the timber below. However these anchor point will need some sort of weathering. Good Luck