1. to make sure all crawl space vents are close .
2. you can check all exterior doors and windows do not have air leak .
3. check attick insulation should be minimum 10'' or you can add more insulatio ... read more
The materials are just 30% of the cost. They are labor intensive and if you are fairly handy you can save a bundle of money doing it yourself. However, this is not a task for the average DYI. If yo ... read more