Trusses are considered a superior method of framing a roof because of the additional support.
Attic truss loft conversion.
This process involves the installation and use of steel beams.
Looking back i was very lucky in that my roof had an unusually high 47 degree pitch and so there was lots of head room.
The role of the horizontal beam is to tie the truss together and carry the load that would otherwise be sustained by the support and vertical timber also known as the king post.
Ironically though it s the rafters that provide a better environment for an attic conversion because of the clear space.
This may well require planning permission.
The conversion from a trussed roof to a trussless roof simply involves the redistribution of the roofs weight from the trusses to beams running from gable to gable.
Before work can begin a structural engineer will calculate the size of the steels required.
If you have trusses it will be next to impossible to reconfigure them to allow for clear space.
Trussed rafters loft conversion most roofs built from the late 1960s onwards are of prefabricated trussed rafter construction with distinctive w shaped webbing.
Attic conversions are now possible by replacing the truss rafters with a shaped trusses or horizontal beams which in return create additional space.