Sorry, the web browser you're using is not supported by this website.

Please use Google Chrome, Firefox, Safari, or another browser to access Thank you.

Skip to main content

We use cookies to enhance your experience. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy.

Can you put r21 in 2x4 wall?

In most wall applications, fiberglass vats rated between R-11 and R-15 are used to insulate 2x4 inch framing. Although evaluated differently, these two types of insulation are close enough in thickness to fit modern wall systems. If you need R-21, you'll need a different type of insultation.

Let's Get It Fixed!

HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.

What Did You Think of This Article?

What Did You Think of This Article?

Shop Recommended ProductsShop HomeX Recommended Products