PHRC Webinars

Cathedral Ceiling Assemblies [Archive]

10/10/2023 1:00 PM - 2:00 PM ET

Instructor: Christopher Hine (Residential Design & Construction Specialist, PHRC)


Link to Webinar:


Cathedral ceiling assemblies or ceilings without attics are not new concepts in residential designs. However, with the increased need for energy efficiency and tighter tolerance for moisture and air infiltration, the dedicated design for these assemblies cannot be overlooked. In this session, learn about prescriptive designs for ceilings without attic spaces and break down some of the critical details that may help achieve an energy-efficient assembly.

Learning Objectives

  1. Understand what ceilings without attic spaces are per the definition in the 2018 IRC.
  2. Review 2018 IRC prescriptive designs for ceilings without attic spaces.
  3. Examine how the lack of attention to details can lead to increased risk in assemblies. Increased risk could include a reduced insulation rating or susceptibility to early decay of building materials.
  4. Review key details that can increase the longevity of ceilings without attic space assemblies, which can provide an energy-efficient assembly for the end user.


Free to attend; $20 for continuing education credit in live webinar

Credit Hours

Live Webinar: 1.0 PA L&I Contact Hour, 1.0 PA PDH for engineers, 1.0 AIA LU|HSW, 1.0 ICC Contact Hour (0.1 CEU), 1.0 NARI hour/CEU

Tags: Residential Structures and Building Code Requirements



The Pennsylvania Housing Research Center serves the home building industry and the residents of Pennsylvania by improving the quality and affordability of housing.

We conduct applied research, foster the development and commercialization of innovative technologies, and transfer appropriate technologies to the housing community.

Pennsylvania Housing Research Center

219 Sackett Building

The Pennsylvania State University

University Park, PA 16802

Phone: 814-865-2341

Fax: 814-863-7304