Without proper ventilation, tremendous heat builds up, which is then transferred into the living area. Insulation can only slow down this movement. (more insulation the slower the heat movement), but It will get into the living area. Active air movement will exhaust this hot air build up and allow insulation to do its job.
The above improvements will pay for themselves over time and are the most relevant to Comfort and Energy savings.
If you have questions as to why we recommend any of these measures Please call Mike Harsin @ 903-268-5500 Or look at our web site at www.eastinair.com