Thanks all for the info and advice. Possibly the high temperatures up to 50 degrees is not so bad but moisture may be the killer. I agree with your concerns Rob, with regard to lack of ventilation under the tarp and it has me thinking of ventilation with a fan as there is a nearby external power point. Luckily we are a bit out of the way for five fingered discount hunters and the dogs may well reduce the number of their digits before they climb up onto the deck
- but point taken.
-Cheers Chris