We are building a new house in N. Texas. We have some severe temps both lows and highs. However they don’t last long. Our builder wants to use closed cell and open cell insulation in the build. We want a high efficiency wood fireplace and everyone says “no way”. I am wondering if we just used foam insulation on West and south walls and blown-in everywhere else, if the wood burning fireplace will work. We are rural and the only other choice for us is propane. We are not a fan!