In the past 6 months we have noticed that a high recycled content of 70% or more has been required on acoustic ceiling tile. In the past, high recycled content was 50% or more, has something changed in the LEED requirements? I have looked at the LEED V4, the only difference in the calculation i can see is: LEED 2009 – The recycled fraction of the assembly is multiplied by the cost of the assembly vs LEED V4 products meeting the recycled content criteria are valued at 100% of their cost. Does this meant that big ticket items such as flooring, drywall, ceiling tiles and furniture will require a high recycled to get this credit?