Originally posted on Construction Magazine Network, written by Sharon Glorioso
When existing roofs (that are part of the building’s thermal envelope) are removed and replaced, and when the roof assembly includes above-deck insulation, the energy code now requires that the insulation levels comply with the requirements for new construction, according to a proposal approved by International Code Council at public comment hearings held in October 2013.
As a result of this proposal approval, the 2015 International Energy Conservation Code (IECC) includes new language that provides unambiguous direction on how the energy code provisions apply to roof repair, roof recover and roof replacement.
Each year about 2.5 billion square feet of roof coverings are installed on existing buildings. The opportunity to upgrade the insulation levels on these roof systems occurs once every several decades when the roof is replaced or even longer when existing roofs are “recovered.” Until recently this requirement was prescribed using vague and confusing language.