Had my Fox flux since 2007 and wondered if the padding degrades over time? Never had a knock or crash to it, but a mate of mine reckons certain types can. Anyone know?

two schools of thought.

Personally I destroy my helmets after 5 or 6 years and replace.
There was a long debate in here a while ago but I think it was pre hack.

EDIT

There are many theories regarding when you should replace your helmet – which is why MET decided to answer the question by testing their own models. And the result? For eight years a MET helmet will do its job just fine, as long as you don’t damage it in a crash.

http://www.bikeradar.com/fitness/article/how-do-met-make-their-helmets–21044/

Giro recommend change your helmet every three years

http://www.giro.com/us_en/customer-service/cycling-helmet-faqs/

As do Kask and Bell. On one hand they would say that, on the other they do degrade from wear and tear, exposure to sun, heat , rain etc. So probably worth doing after 5 years.

edit cross post with Stoner

3 to 5 years, if stored properly. Or, one big stack.

3 years seems to be the view or a blow to the helmet.

Ultraviolet, heat/cold, sweat etc will all degrade the helmet over time.

Thanks folks…my B’day next week…new helmet from the missus coming up!

The new kask that I bought today recommends replacement after 5 years, sad but i read the instructions….

according to some people, the polystyrene degrades over time so I would probably change your helmet at least every three years. hardly a big investment.