Support Space Roof Trusses

Now that the main timberframe structure has been built and SIPs have been installed, the builders can move ahead with framing the kitchen and support space building. Sequencing is a vital part of any construction schedule and it is a careful coordination and orchestration of many moving parts, contractors, materials and other elements that make it a challenging endeavor.

With the support trusses, an element that is particularly interesting to me is the joining of the two roof lines which are perpendicular to each other. Look carefully at the last building element on the left side of the roofing trusses and you can see the interesting build of rafters that mate these two elements. It is a lot of complicated angles and fitting that form an essential join of two structures - one that needs to be structurally sound and able to support waterproofing, insulation and other guards against New England Weather.

Finally, after the framing is complete, ZIP panels are installed. This is plyood which has a skin on the outside to provide a vapor barrier. Each seam is taped with a special adhesive tape which seals the edges and prevents moister from getting through this exterior barrier.

The installation crew use a lift machine type referred to as a Lull (a brand name) which not only can put builders on the roof, but also bring several panels for easier installation. Safety harnesses and ropes are a must for worker safety.