Unsupported browser

For a better experience please update your browser to its latest version.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Cavity walls

Approved Document E contains the guidance for masonry cavity walls, which states that only butterfly ties should be used to connect the wall leaves. For structural reasons, these ties are generally only suitable for cavity widths of 50mm to 75mm.

Already a subscriber? Login here or activate your digital account