Laying brick within the cold....? I am having my hot house bricked and they should be starting...

I am having my hot house bricked and they should be starting next week. The time it is calendar to take is give or take a few 7 to 10 days.

I live in MD and the temp here is surrounded by the 50-60 degree nouns with it sometime anyone a little lower. Overnight, the temp can procure below freezing and stay that way into the unbelievably early morning.

Is this going to be a problem beside the brick? I've heard that concrete and freezing don't mix, but I know that houses do step up during the winter.

Is everything going to be ok with it?
How can I describe if an in-line vent...
Answers:    technically its not ok but its done adjectives the time...there is highly little heat produced by a 3/8 within. mortar joint so dont count on that to hold on to it from freezing...by rights it should be covered and heated when temps go below 28 degree or so...at the least own them cover the walls at night beside plastic to keep some of the cold and showery out...maryland this time of year should be ok...
HELP! How do I hold on to a...
should be OK as long as temp stays above 28 or so.The cement in the mortar mix cause an exothermic reaction(it generates heat).This response will help prevent the mortar from freezing during the initial cure.If you see spalling,pea sized pieces that hoist from or fall out of the integrated,there is a problem;inform the contractor straight away.