I'm about to put floor joists in my loft so I can board it for storage.
These herringbone straps look like a pretty convenient way of avoiding
timber noggins.

Question is, how many should I use on a 4.2m span?

One either end and one in the middle? One every 900mm ?

Any sugegstions welcome.

Cheers
Chris


http://www.screwfix.com/app/sfd/sea/...chText=herring