Question Office temperature for storing vinyls/paper

Hi guys
I am pretty new to large format digital printing, graphic designer by trade. I have a large wooden shed/cabin as a studio which is made from 19mm tongue and groove with 1 good layer of fibreglass insulation with plasterboard interior walls. Heat is only on if I am in the studio which is part time currently, 2 electric heaters. I am finding that in Autumn/Winter when I come into the studio in morning that say vinyl I've had in printer overnight is curling up and bending. And printed stickers are too if I've printed them previously and left them on the table Any advice on how to keep printed items in good condition and materials in general? Must be the cold weather although the winter is still to come so it will get alot colder. Its maybe the cold with slight damp? I'm worried about prints being ruined. Is it really necessary to regulate the temperature in the studio, what does everyone else do? Many thanks!

 

Thanks for the advice Texas_Signmaker!

 

Thank you Gino, good advice