Case Study

The growing emphasis on sustainable construction has pushed building professionals and homeowners alike to adopt more efficient and durable insulation strategies—particularly in retrofit contexts where existing structures must be adapted for 21st-century energy demands. Among the most effective materials in deep energy retrofits are rigid foam board insulations such as expanded polystyrene (EPS), extruded polystyrene…

Below is a curated list of 20 resources focusing on deep energy retrofits for buildings, with a particular emphasis on foam panel insulation (polyiso, EPS, XPS). All links point to reputable third-party sites—primarily doe.gov or epa.gov. Each entry includes a short paragraph describing the resource, its relevance, and why it’s worth consulting. Where possible, case…