The 1-1/2 story Stavehouse, with 12/12 pitched (45 deg) roof, has SIP gables trussing, SIP roofing and SIP wall panel in-filling between the wall staves. The SIP gables allow the sizing of window openings as required. The principal trusses are king-post units, exposed above the loft. Ledgers may be added to their lower chords to provide support for lowered SIP ceilings if required.

This frame is 24'-4" x 38'-4" (930 sq ft) developing approximately 1625 sq ft of useable stand up space on both main floor and loft levels. The loft floor beams which span the structure also act as tie beams between the long walls. When the loft floor is covered with 4" SIP's, an effective insulating diaphragm results, which can be further modified to suppress transmission of sound between levels or to bear the weight of hydronic floor heating, etc.

Unfinished or pre-finished 6.5" (R-30) roof SIP's are normally used to cover the roof trussing. Dormers may also be fabricated from SIP's, as required.

The wall in-fill & bracing may be accomplished with stock 4.5" SIP's fitted over the post splines (see Muskoka project) before the wall plate are added, or by SIP's or other in-fill panels of framed construction, fitted after the wall timbers are standing. In either case, holes drilled through the standard wall staves at 18" above the sill timber, are provided to allow electrical wiring to run from panel to panel. Most SIP's come pre-grooved for wiring.

If additional living space is required, the long axis may be stretched by a number of in-fill modules so long as some additional cross-wall panels are added at the main floor level to insure adequate cross-frame rigidity.