Swa on top of fibre glass roof

[littlespark]

I was on a similar job years ago. Flat roof. We laid 2x2 slabs on the roof, then screwed the regular tray brackets to them.

Can’t remember now if it was swa or pyro we ran on the tray???

The roof in the OP may not be flat

 

[IAmSparkytus!]

Aren't fibreglass roofs fire retardant making the premature collapse thing a non-starter anyways??

 

[westward10]

Aren't fibreglass roofs fire retardant making the premature collapse thing a non-starter anyways??

Fibre glass is resilient to fire but it will melt.

 

[buzzlightyear]

Me I tell the customer if it not fasen down the cable on top of the roof might start moving in high winds.

 

[IAmSparkytus!]

End of the day, if you aren't happy with the way they want it done and they won't be swayed, give the job a miss ?