Repair of timber sloped firring/fillet

[markyboy944]

Guys

I am looking at the second flat roof on the property , and all of the firrings (aks fillets) [the sloped timber cross beams that go across the kists, and give slope to the flat roof), are all rotten within the first 6 to 9 inches.

Further along, from , say the 12 inch .. 18 inch point, they are fine.

Any advice on whether I can cut and replace these sections ? Maybe with some sort of bracket ?

Any thoughts gratefully received.

 

[^woody^]

Noggins or fix to the side of the joists.

Ensure the cause of the rot is dealt with and treat the rotten timber.