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

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

Cleanest way to insulate.

Using this Insulation in my garage attic, keeps the heat down so I can use space for storage. This and an exhaust fan reduced the temp significantly. When I started it was 140 degrees up there 95 outside temp. With the fan I can know easily keep temperature same as outside. It looks clean and bright up there now.

Reflective insulation that controls condensation

The Reflectix insulation is easy to cut and easy to install. I used it in my hay barn under the metal roof to control condensation from dripping onto the hay.

ceiling insulation

I put this in the ceiling of my wood shop metal building to help with the air conditioning. Made a huge difference.

Added insulation for better tiny home insulation

We used this to insulate our tiny home. I will have to post again after our hottest Texas summer days.

Very versatile product.

Works well on quite a few household insulation tune up projects. Lightweight and easy to handle.