Wheelbuilding / Wheel Building / Wheel build help

Are the NDS spokes of a disc braked hub more likely to snap from fatigue or lose tension due to the forces of braking being applied at the hub rather than the rim?

I'm being driven mad by my rear wheel Novatec road disc hub, ACI spokes and a 32H 29er Alex rim which constantly has spoke losing tension and snapping despite use of tension gauge, linseed, proper stress relief etc. in building.

The Novatec D 712 SB rear (if that's the one you mean) has a decent tension distribution. For Alpina DB I build them at 22-23 on the Drive side (Park tool gauge) and that comes at 17-18 on the non drive side, which is a high enough tension to prevent them from coming loose. Don't normally use threadlock compounds on these, but if you need, I would recommend Loctite 222 (the purple one) as a spoke prep. or Loctite 241 if you want to use it on the nipples after the build. Some use lineseed oil, I have never tried it, is seems to get pretty hard when I use it on wood