Its just too cold

The well below freezing temps that we've been experiencing for the past week or so have been downright chilly.  But today's news from the construction site, "Its just too cold."  Evidently, besides the effort to prevent frostbite in the workers, it is simply too cold for the mortar used between the stone on in our interior walls. 
On the one hand, it is frustrating.  On the other hand, I am glad that our builders will not work in this weather.  It makes me feel good about the quality of our house.
Hopefully, the weather will start to warm up soon, and the builders can get on with the house.
Tomorrow, at the very least, is another meeting with the bank about the mortgage.