- Is this kit worth it for an attic?
- It helps most as a radiant barrier stapled under the roof deck or over joists in a hot climate. It will not replace blown-in insulation, so pair it with existing insulation for real savings.
- How much area do 16 panels cover?
- Each panel is 24 by 48 inches, or 8 square feet, so the kit covers about 128 square feet. Measure your attic or garage door area and buy a second kit if you need more.
- Can I put it directly on a window?
- Yes. Cut a panel to the glass size and press it against the pane or fit it in the frame. Expect a dark, reflective look and reduced light, so it suits garages and utility rooms more than living spaces.
- Does it need a gap to work?
- Yes. The foil reflects radiant heat best with an air space on at least one side, such as under a roof deck or behind a furring strip. Pressed flat against a wall, it performs closer to plain bubble wrap.
- What is in the box?
- Sixteen pre-cut 24x48 inch double bubble foil panels. Tape, staples and adhesive are not included, so plan on buying foil tape for the seams.
- When is the price lowest?
- Radiant barrier kits often drop in spring and early summer before cooling season and again in fall. At $154.98 at Walmart as of November 4, 2026, it is the only new price listed, so watch for a second seller before assuming it is a deal.
- Where is the 16pcs 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit cheapest?
- At Walmart, for $154.98, as of our latest check.
