On Mon, 25 Apr 2005 00:06:10 +0100, Alan
wrote:

In message . com,
wrote

I've already done a quick test and I am quite positive that the
polycarbonate sheet will work just fine if not better than chipboard.

Will it still be as strong in, say, 5 years time? Will UV or heat cause
it to become brittle? Will it suffer fatigue with constant walking
across it?

Also, if there were a fire it could melt, posing a hazard for anyone
trapped in the loft.