We are making progress on my home decarbonization project—the old slab was removed, basement wall and under-slab insulation was added (big oops on the underslab XPS order—this stuff is HFC-blown, but there was an ordering and availability snafu);
and the new slab poured (with new columns installed for the main beam for longevity);
siding was removed;
basement windows were replaced and peel-and-stick air barrier was added;
the walls were filled with cellulose (through holes drilled from the exterior);
then continuous wood fiberboard insulation was added;
the electrical service was upgraded from 100A to 200A (there was some debate as to whether this was necessary, with the possibility of load sharing technology);
the gas line was removed; a new heat pump and duct system was installed for heating and cooling; a new conditioning ERV was added for ventilation;
new appliances were installed, including a heat pump water heater, induction cooktop, and heat pump condensing dryer;
the basement was drywalled;
we’re currently finishing rebuilding the soffits and facias;
and next we move to rebuilding the back room walls.
The house feels different in a good way—it definitely fluctuates in temperature less with all the added insulation, the HVAC system is so gentle and effective, and cooking with induction instead of gas is a pleasure. I’m so looking forward to getting the back room rebuilt so we can run a blower door and check our airtightness.