For flat roofs, spray polyurethane foam is an excellent option to consider. It consists of two components (resin and polyisocyanurate) joined together with heat and pressure, which react to rise and form a solid surface.
At a moment when LEED is pivoting toward an increasingly more stringent certification model based on an integration of strategies and measured performance (utilizing the emerging arc platform), the 2018 IgCC is poised to fill the necessary role of setting a minimum standard for energy and environmental design.
The ways in which liquid and vapor move through our building envelopes are complex, and even today not completely understood; but the fact that lots of water can (and does) move through porous building materials is a phenomenon that rules over so much of the way we build.
Whole-Building Energy Modeling (BEM) is a versatile, multipurpose tool that is used in new building and retrofit design, code compliance, green certification, qualification for tax credits and utility incentives, and real-time building control.
In a recent submission to Building Enclosures Magazine, PIMA president Justin Koscher briefly examines the impact the latest building codes have on making structures more resilient to natural disasters.