Fortunately it doesn't get so cold here, otherwise that would definitely be a problem! Earlier this year we finally had the funds to put reverse cycle aircons in the kids bedrooms, poor things have been suffering for years in rooms that are hot in summer and cold in winter (summer was always the bigger problem as there was no relief especially after losing two shade trees, winter sucked but they don't yet have long term injuries which act up when it's too cold and always hurt even when you have the blankets and things piled on to keep you warm).

Is it at least a little bit warmer with the work you've done so far?