Chris Allmark wrote:
the maximum distance from the top of the existing bedroom ceiling
joists to the ridge plate is only about 2 metres, as it stands at the
moment the useable area of the room will be so small as to make it not
worth converting. Would it be possible to lower the existing bedroom
ceilings to create more room in the loft, and/or install dormer

Considering each problem has a £££ solution, this may work out as an
expensive conversion.
The floors in the loft would be about 120mm higher than the existing level
as your existing ceiling joists are likely to be a lot smaller than the ones
required to support a floor. Installing 220mm joists lower down is a good
solution and one commonly done on properties in this 1900s terrace with
almost 3m room heights.

The dormer is a sensible option to create usable space, and a couple of well
placed steels can solve most purlin problems.

--
Toby.

'One day son, all this will be finished'