In very hot weather should I leave the geenhouse door open?

[Tomatoking]

yer me to door and Windows all day window all the time, also keep the leaves cool with a mist spray.

I mist spray my toms, sometimes a few times a day on very hot days. It keeps the plants less stressed and keeps the humidity up, which helps fruit setting and also keeps red spider at bay a little. I never get trouble with leaf scorch on older plants.
MR TK

[Flummery]

Like the others, I'm leaving mine open all the time now. As long as the overnight temperature is above 5c they should be fine with the door open all night too.

'Twas down to 2.6 here last night - 4.6 in the greenhouse. I close all windows and the door at night still, but open all up in the day.

[cazp]

Does anyone know what sort of tomato they use in Heinz ketchup? I want one of those ones

Heinz breed their own seeds apparently... see these links..

Heinz® Ketchup Grown, Not Made.®
HeinzSeed HOME

[Bren In Pots]

Its been hot here these last few days, over night it was 15.3c in my greenhouse and that was with the door open about 5 inch.