Ratings & Reviews for Reflectix R- 21 Attic Wall Unfaced Reflective Roll Insulation 50-sq ft ( 24-in W x 25-ft L ) Individual pack

What Customers Are Saying

Customers overwhelmingly praise this reflective insulation for exceptional heat reduction, with many reporting garage temperature drops of 6-15 degrees during summer. Reviewers consistently highlight its ease of installation—lightweight, flexible design requires no tools, with some completing projects in under 20 minutes. Users appreciate its versatility across garages, RVs, windows, skylights, ductwork, and water heaters. Most find it highly effective as a radiant barrier for reflecting heat away from living spaces and improving air conditioning efficiency. A few clarify it functions as a heat reflector rather than traditional insulation, and some note mixed results on garage doors, but overall customers strongly recommend it for thermal management.