We sealed this duct work and then installed a radian barrier around it.
We put air sealing around recess lights and duct boot.
In this picture, we are air sealing the top plates.
We are insulating and sealing attic walls with thermal barrier insulation.
We sealed and insulated this knee wall with a thermal barrier insulation board.
This customer had replaced their windows but was having problems keeping their upstairs warm. They called us and we were able to determine the problem was caused by an underinsullated attic with very little air sealing.