Just found out that the staples used for the Breathable Membrane are steel and not galvanized or stainless steel.  The building has been out in the rain for 7 months  and we may get moisture in the cavity.

 

Should I be worried that the  Breathable Membrane may fall off one day and we get damp in the building.

 

Thanks

Is this membrane over timber frame plus brick exterior? If so, then the ties will be part of what holds the membrane in place also.

Should be stainless.  It is worth just getting some.  If the membrane is on and you have scaffold it is a fairly quick job.

Yes will be block outer leaf on timber frame.  I have to tape the membrane so will do it when I tape it