- Is this worth it for wrapping pipes?
- For exposed pipes and ducts it is a cheap, easy wrap that reflects heat and resists condensation. It will not match foam pipe insulation for stopping heat loss, so use it as a supplement, not the only layer.
- How much area does the roll cover?
- The roll is 6 inches wide by 25 feet long, about 12.5 square feet. That wraps roughly 25 feet of 6-inch pipe or covers a small window or door panel.
- Can I use it on windows?
- Yes, it is often cut to size for windows and garage doors as a radiant barrier. It blocks light completely, so it suits storage rooms and garages better than living spaces.
- Does it need tape or adhesive?
- It has no adhesive. Plan on foil tape or another heat-rated tape to join seams and hold it in place, and avoid ordinary duct tape that dries out.
- What R-value does it have?
- Double bubble foil products typically rate around R-3 to R-4 depending on installation and air gaps. That is far below batt insulation, so treat it as a radiant barrier.
- When is the price lowest?
- There is only one new listing at $39.58 at Walmart as of November 4, 2026, so there is no range to judge. Compare against other roll sizes and brands before buying.
- Where is the Double Bubble Reflective Foil Insulation Roll 6 inch x 25 ft cheapest?
- At Walmart, for $39.58, as of our latest check.