Just returned from Loch Fyne where all manner of skirt problems were experienced due to the heat. The black skirt material absorbs heat at a greater rate than other colours (well known!) so today I put out some strips of Black - went up to 42 degrees with ambient 19 C and the grey went up to 30 only.
Next skirt will certainly be GREY to reduce the Syntic glue melting in the sun.
In Scotland the temps were much higher and the inside of the skirt was in a bag so temps there were huge
I burnt my hand checking it, even tho we got in the habit of pushing the skirt under the craft.
I gather these materials are used to make lorry side screens so google them?