Firring strips same direction as joists

[Conor]

Hi.

 

Balcony build in progress. Firring strips to be added to the joists to create a fall away from the house. This is the same direction as the joists. Do I just add them directly on top or do I need to counterbatten first? Worried about twisting. OSB deck the  EPDM on top. I'm guessing noggings in the middle wouldn't hurt?

 

Edited April 2, 2023 by Conor

[Thorfun]

our firings for our flat roofs were just attached directly to the joists.

 

afaik noggins never hurt! except for maybe the pocket with the current timber prices. 😉 

[Thorfun]

this was the only photo I could find!

 

Edited April 2, 2023 by Thorfun

[Conor]

Coolio. Makes life easier as the firrings across that direction are a lot shorter than the other way. Will make meeting the return a bit more difficult as the fall then goes the other way... Will cross that bridge later.

 

Will have loads of offcuts so noggins not an issue.