No, we have spent over a year checking out builders and found one who is highly praised. I have seen a number of his new construction houses and I dont have any concerns with the tighness of the house. Especially around the windows.
I was refering to the fact as houses are built tigher, the amount of fresh air infiltrating the declines to the point were most IAQ experts suggest fresh air ventilation be mechanically controlled. Many of the poster on this forum do not support mechanical fresh air ventilation. I do. In addition, green grass climates have enough wet cool weather that well insulated homes do not have enough cooling load to remove the moisture of the occupants and fresh air to maintain <50RH. Regards TB
Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
Use +Merv 10 air filter. -Don't forget the "Golden Rule"