“Fixing” a gummy Silnylon tent fly?

Had this happen with the original version of my HubbaHubba. You probably have a urethane coated fly – not silnylon.

MSR replaced the tent with the newer model (at no charge) due to the defect. It's worth a call to TNF. But to answer your question the waterproofing is breaking down and I doubt there's a long term fix that you'll find satisfactory. Powder might work – I dunno.

Silnylon never does that, but poorly-cured PU certainly does. It is NOT repairable.

Manufacturing defect – return.

Cheers

Thanks to both for the reply. Will send it in.
Thanks-Blake