Superinsulation roof rafter trusses and building system

A superinsulation building system comprising:

• a plurality of roof rafter truss structures, each roof rafter truss structure comprising first and second outer rafter chords defining the sloping outer surfaces of a roof gable from gable ridge to gable eaves, at least a first inner rafter chord parallel with and sapced from a portion of the first outer rafter chord, first deep webbing means comprising a plurality of webs rigidly joining the first inner and outer rafter chords in said parallel relationship spaced apart a sufficient distance to accommodate insulation to a depth for superinsulation at an R factor of 60 or greater with ventilation space along the outer rafter chord above said insulation, said first inner and outer rafter chords defining a first superinsulation channel and ventilation space extending from the gable eave toward the gable ridge, a horizontal ceiling joist chord spaced from said first and second outer rafter chords and positioned above and joined to the upper end of the first inner rafter chord for defining and spanning a living space without obstruction, second deep webbing means comprising webs rigidly joining the ceiling joist chord directly with the first and second outer rafter chords, said webs of the second deep webbing means being coupled to the horizontal ceiling joist chord on one hand and on the other hand to the first and second outer rafter chords in a unitary structure so that the ceiling joist chord is an integral part of the perimeter of the truss structure, said ceiling joist chord and outer rafter chords defining an attic space at the gable ridge communicating with said first superinsulation channel, said attic space being sufficient to accommodate insulation to a depth for superinsulation with an R factor of 60 or greater and with a gable ridge ventilation space above the insulation communicating with ventilation space of the first superinsulation channel;
• said roof rafter truss structures being prefabricated as integral eave-to-eave roof trusses and then arranged in adjacent spaced apart parallel configuration for defining and bounding a plurality of said first superinsulation channels between the respective inner and outer rafter chords and also between each pair of said plurality of roof rafter truss structures, and for defining an extended attic space between the ceiling joist chords and the outer rafter chords, said attic space communicating with the first superinsulation channels;
• inner wall defining means secured below the first inner rafter chords and horizontal ceiling joist chords defining the surface or skin of a raised ceiling living space below the plurality of truss structures and defining the lower boundary of the attic space and first superinsulation channels;
• outer roof surface defining means secured over said outer rafter chords;
• permeable vent boundary defining means secured between adjacent outer rafter chords and to the outer roof surface defining means, said permeable vent boundary means defining an air breathing upper boundary for said superinsulation channels and further defining with the outer roof surface defining means ventilating spaces above the insulation but impassible to the insulation running from the gable eaves to the attic space and gable ridge of the roof gable for ventilation and breathing of insulation retained in said superinsulation channels;
• blown-in insulation retained by the boundaries of the superinsulation channels and resting in said attic space;
• and soffet means at the gable eaves of said roof gable comprising baffle means for retaining the insulation at the gable eave ends of the superinsulation channels and vent means communicating with the ventilating space above the superinsulation channels.