Ratings & Reviews for Reflectix R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack

Cuts easily with a Razor knife or scissors

This product was used to line the windows of my Sunroom, which gets very HOT in the Summer and is unbearable to use. After lining the windows the temperature is manageable with the fan and AC in the room. It was easy to work with and no messes, glues or fiberglass residue.

It works

It really helps to low the temperature in the attic, I'm half way to finish the entire attic roof ánd temperature has dropped about 13% from 120 degrees to 105 degrees, keeping in mind that roof has a very poor ventilation along the ridge, next I'm installing an electric exhaust fan and a 14" exhaust turbine.

Works great in my attic

This stuff works great! I put this up in my attic by simply stapling it to the rafters. One rafter was greater than 24 inch center and a small gap remained so I left it to finish covering later. When I went back up there to finish I could feel the hot air coming out through the gap while the sections adjacent to that were cool.

Received 97 Feet. Not 100 Feet

I ordered for my garage wall. I need to cut 10 piece 10 Feet. The last one only 7 Feet long. Now i need to order an extra roll.

Works well

I really wanted rolls 16 inches wide to fit in between studs in my shop, but that size was not available at the time. So I ordered this and cut 16 inch strips. Cuts very easily with a utility knife. This worked out very well for me and I am happy with the results.

Reflectix R-21 400-sq ft Unfaced Reflective Roll I

This has worked perfect for our garage and 4 ft wide is easy to handle putting up

its ok but not very durable it rips and pops easy.

its pretty much just bubble wrap covered with thin milar on both sides.

Very satisfied. Easy to work with. I used it in my crawl spaces. Because these spaces are short on height, I found myself constantly brushing my head against the sagging Fiberglas insulation. Instead of adding more rods to keep Fiberglas from sagging, I opted to add this reflective rolled insulation on the underneath. Sealing it up, thus giving me a much better insulation factor, as well as eliminating dealing with the Fiberglas particles. Breathing and physical contact. I have pex waterlines, ...

great material

New homeowners we are reading everything of course watching every diy/ youtube videos

Mediocre Consistency

There are lots of wrinkles in the roll. I am using this for blocking the windows on a motorhome. The wrinkles allow the insulation to bend and try to fold. That flexibility makes handling it more difficult. Additionally, there are some groups of cells that are not fully inflated. Last complaint is that the bubbles are on the bias. You would think it would be square and symmetrical. If there was symmetry it would be easier to cut uniform pieces. The foto is from about the middle of the row.

Works well!

The installation was easy to install and keep the guest house cool when need to be and warm when it needs to be. I've told several of my friend about this product.

Great product

I put the reflective insulation in my shop and could almost instantly feel a difference. It sealed up my drafty building and also reduced echoing instantly.

Works great

Works great when you don’t need a lot of r value and don’t want to deal with the itchy fiberglass rolls