Why do you suggest professional installation vs. a DIY approach?
With attic insulation, a professional installation will deliver the very best results. In fact, whether removing old insulation or installing new materials, these projects should be managed by a professional, with the proper training and the appropriate expertise.
A DIY approach by an inexperienced homeowner, or an unproven contractor, will simply not provide the best results. True - you can save some money with a DIY approach, but nothing beats a professional approach – with quality products and quality workmanship.