Siding system including siding trim pieces and method of siding a structure using same

A siding trim piece for siding construction using siding elements on a structure, comprising:

• an elongated relatively flexible sheet defining a longitudinal axis and a transverse axis perpendicular to the longitudinal axis, and having a gauge between 0.010 and 0.013 for resisting thermal dimensional changes along the longitudinal axis relative to a stiffer heavy gauge sheet, said sheet defining a rear panel, a first transverse wall integral with the rear panel and extending outwardly therefrom, a front panel integral with the first transverse wall and extending generally parallel to the rear panel, and a second transverse wall integral with the front panel and extending inwardly therefrom in a direction parallel to the first transverse wall;
• the first transverse wall and the rear panel cooperating to define an external integral channel on one side of the first transverse wall for retaining a siding element;
• and
• the first and second traverse walls cooperating to define an integral internal channel on an opposite side of the first traverse wall, the internal channel enclosing a substrate material laminated to an interior surface of the first wall, the substrate material laminated to the low gauge sheet providing structural rigidity to the low gauge sheet along the longitudinal and transverse axes.

A frieze, soffit and facia assembly for covering a frieze board, soffit and fascia board of a structure, comprising:

• a frieze element for covering the frieze board, at least one soffit element for covering the soffit, and a facia element for covering the facia board;
• each element comprising a low gauge relatively flexible layer defining a longitudinal axis and a transverse axis perpendicular to the longitudinal axis and having a gauge between 0.010 and 0.013 for resisting thermal dimensional changes along the longitudinal axis relative to a stiffer, heavy gauge layer, the low gauge layer defining external and internal surfaces;
• and a substrate material having a first surface laminated to the internal surface of the low gauge layer and a second porous surface for attachment to the surface of the structure, the substrate material laminated to the low gauge layer prodding structural rigidity to the low gauge layer along the longitudinal and transverse axes;
• the facia and frieze elements having an edge formed into an external channel with a seam covering section, the external channel of the facia element opening toward the external channel of the frieze element;
• the soffit element being captured between the external channels of the facia and frieze elements with the seam covering sections covering spaces between the soffit element and the facia and frieze element, the transverse axis of the soffit element extending between the external channels of the facia and frieze elements so that the longitudinal axes of the facia, frieze and soffit element are aligned in the same direction.