I know that if it was a full on loft conversion then structural calculations are needed and there are firms such as telebeam or trussloft that specialise in such conversions.

Now for a simple fink truss loft over a garage, going to all this work will mean that it's not cost effective for a simple storage space.

The new joists and floor would be independent of the trusses and sit alongside the trusses so no extra load is imparted to the trusses themselves.

I was hoping someone on this Ng might have done something similar?