Design and Logistics
With a design finalized in early summer, the project was scheduled and the clients prepared for construction. The scope of the work included tearing down the existing structure to the first floor deck. We would keep in place the oak hardwood flooring on the first floor and then build the new two story home on the existing floor deck. Logistically, it would be a challenge under normal circumstances, but adding to the complexity, the clients decided to live in the existing semi-finished basement during construction - which meant to preserve the hardwood flooring and the finished living space under it, we could not let any water into the home.
That called for some extremely complicated logistical challenges. Once a construction contract was signed, we went to work taking accurate measurements of the existing footprint and came up with a plan. We would prefabricate all the walls, and the second floor in the side yard before we ever took a shingle off the roof. It was daring, but really the only way to do this without tenting the entire home for at least a month. We worked with our truss supplier on the roof trusses as well as a second floor truss system that clear spanned 28 feet and had a stair well right in the middle. We then worked with an engineer and an excellent crane company to engineer the lift of the entire floor system - already assembled in the side yard. We also consulted with a local builder who had done a similar lift with the entire roof system of a home and felt like while it was a first for us, we were up to the challenge.
Jon, Allied's Owner, and another employee started in late August by building a set of custom jacks laid out to support a dummy foot print first floor walls. Once that was set in the yard and leveled, we were able to set the floor trusses, add bracing, and sheath the floor all at ground level. after 2 days we had a nice flat level deck which we then framed all the new walls of the home on. In 8 working days two of us had framed the new home and it was sitting flat packed on the floor system in the side yard. We covered it all with a tarp and looked for our weather and scheduling window which came in mid September.