Laying Down Subfloor

Materials - Sub Flooring

From the main beams and floor joists upwards, the bulk of the building materials used in the treehouse will be either recycled or reclaimed material. The floor where the building of the treehouse is to be situated will be 7/16 OSB sub floor, with reclaimed tongue and groove maple hardwood on top. The OSB is offcuts and scrap roofing material, from the local subdivision. The easiest way to get as much scrap building materials as you want is make friends with the framing crew supervisor, bring the gang four Tim Horton's coffee one morning, and they will give you run of the scrap bin! That's how I do it at least.