Convert W Truss To Attic Truss

An open space would have been much more practical.

Convert w truss to attic truss.

It s a 12 12 roof so that s a good 11 at the ridge which even with new floor joists and a 5 knee wall should be plenty of room for a nice space. They allow a house roof to be erected and felted in a day. The main problem with raising the roof is that it requires planning permission and there s a fairly good chance this will be refused especially for terraced. There are many issues to consider with this type of renovation.

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. These utilise thinner and therefore cheaper timbers but have structural integrity by the addition of braced diagonal timbers. When and why did the truss roof become popular. Attic trusses have a rectangular shape inside each truss.

Often the height of the roof may be too low when constructed with truss rafters which means that it may need to be raised too. Room in roof trusses can be craned into place to form the shell of a ready made new loft room with the insulation placed above the rafters for maximum thermal efficiency. Late 1960s the most popular form of construction used factory made roof trusses. 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.

A truss frame will occupy the majority of the space within the loft which means that the whole structure needs replacing if you decide to convert your attic. A friend of mine who was a structural engineer explained to me that the cost to the builder would have been significantly more if he had built the roof with a large open space. The easiest way to do this is by building a rafter system from inside the attic in the area to be modified. Measure the width of your roof trusses from inside to inside.

Attic conversions are now possible by replacing the truss rafters with a shaped trusses or horizontal beams which in return create additional space. Roof support ceiling below new floor framing etc. The trusses are double cantilever style. 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.

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. Roof trusses going in all directions made the space very difficult to use.