Use a chalk line to draw a line along the floor parallel to the lower edge of the roof from one end of the attic to the other on both sides.
Alter roof trusses loft conversion.
The beams are supported by the gable ends of the roof and replace the original wooden struts which are removed once the steel beams are in place.
Where you re adding a large dormer.
Most loft conversions employ at least one pair of steel beams to support the new floor structure and the roof slopes at purlin level and sometimes also at ridge level e g.
Attic trusses have a rectangular shape inside each truss.
If the roof slope is steeper than 9 inches in 12 inches of run it doesn t take much width to end up with a nice room 12 feet wide with an 8 foot.
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.
Due to the supporting beams taking up the available space in the roof area so many builders will tell you that your loft is unconvertible however here at tvm lofts we are experts at converting this particular style of loft.
Measure in from the lower edge of the roof to a point 1 4 the width of the truss on either side of the attic.
Measure the width of your roof trusses from inside to inside.
The usual way in which trussed loft conversions are carried out is to install steel joists across the width of the roof and running the full length of the roof.