Double Bubble Insulation White/Foil 4' x 25' vs INSULATION MARKETPLACE Reflective Insulation Roll

Both are reflective bubble wraps that block radiant heat, not bulk insulation. The Double Bubble roll is the safer pick: a 4.9 rating from 216 ratings, a wider 4 ft roll, and a stated -55 to +100 °C range. The INSULATION MARKETPLACE sheet claims a Class A fire rating and an R-value up to 15.32, but its own specs conflict on length and width and it has far fewer ratings. Buy the Double Bubble for garage doors, sheds and RVs where you want a proven, wide roll. Buy the INSULATION MARKETPLACE kit for windows and small cut-to-fit jobs where the fire rating matters.

• Choose the Double Bubble if you want a wide 4 ft roll with a long track record of ratings for garage doors, sheds, doghouses and RVs.
• Choose the INSULATION MARKETPLACE sheet if you need a Class A fire-rated, waterproof sheet for windows or small spaces and value the sound-dampening claim.