Winter
Hi Scaffy
I've been looking into the 'winter' aspect of one of your comments and after freezing 3 samples I performed the following tests.
1st sample, frozen for 3 hours. Smashed against concrete viciously with fractures on upper wing ( board integrity still maintained ). Fractured element pulled back to try to tear the wing more, 1/4" managed (see photo).
Second abusive test, striking the unit against edge of solid concrete block. Resultant damage, minor impact evidence (see photo).
2nd sample, frozen overnight. Subjected to same punishment with the resultant damage no split and same impact edge markings.
3rd sample, still to be tested.
The test results can be replicated and I hope to have definitive wind tunnel test results very soon.
In the mean time, there is no better finish to your scaffolds.