Not a problem for mine. Underfloor gap helps but I'm also quite protected by other fencing and it leaks enough air to stay close to ambient. The breeze through the gap also helps keep the concrete slab cool.
Bit different in Aus I'd expect. I'd be inclined to insulate the north facing wall and roof maybe. The gear should not mind being quite warm and you don't normally use it in the day anyway. Open it up early evening to cool down and stabilise.
I'd contemplated using some of the original corrugated roofing panels as a top layer to provide an airgap and wind tunnel effect on my roof. Would provide an extra layer of sheilding and heat reflection.
|