My apiary is quite exposed to wind - starting in mid-October last year, I added a quilt box above the feeding eke, and later on when the weather became colder, added a DIY hive 'cosy' on the outside of the brood box, covering both sides and back of the hive and held with a strap. This year I am planning to try the cork SHINS from Thorne, at each end of the brood box, with the other cork pieces strapped to the side and back where most wind hits the hives and use a quilt box under the roof again. May also erect a wind barrier.
What does everyone else do for insulation and how sheltered is your apiary?