mgwI need some clarification here. Does anyone out there know of any other grow facility that uses wood trusses on the ceiling, which would be highly susceptibe to wood rot under damp humid grow conditions. All the facilities I have seen just about everywhere use metal beams which will not only support the weight of heavy lighting systems but resist rot,breakage, damage. There must be someone who has a construction background that would know this. Is it a normal building code for this type of facility? Before I buy another share I need to know this.