The new International Building Code now allows for the use of weather-resistive barriers above 40 feet high.
Code restrictions had been designed to limit the use of combustible materials that might propagate flames. In the 2015 update, however, exceptions are allowed that recognize that in certain circumstances a weather-resistive barrier by itself would be a negligible contributor to the spread of flames.
This change should result in an energy efficiency boost in cases where builders have had to transition to less efficient methods of weather sealing above 40 feet. Weather-resistive barriers are now allowed in walls in which the water-resistive barrier is the only combustible component and the exterior wall has a fire-resistant wall covering of brick, concrete, stone, terracotta, stucco, or steel.
The material can also be used in walls in which the water-resistive barrier is the only combustible component and the water-resistive barrier has certain heat, flame spread, and smoke properties in accordance with ASTM E 1354 and ASTM E84 or UL723.
Related Stories
Codes and Standards | Jul 16, 2019
ASCE seeks comments on update to Calculation Methods for Structural Fire Protection standard
Pertains to fire resistance rating times.
Codes and Standards | Jul 15, 2019
USGBC calls for proposals for feedback, concepts for next LEED version
The move follows successful public input on LEED 4.1.
AEC Tech | Jul 15, 2019
Lack of standards hampers development of exoskeleton industry
Guidelines, common terminology, and testing methodology are needed, says expert.
Concrete | Jul 8, 2019
Concrete repair code requirements released
American Concrete Institute offers guidance on assessment, repair, rehab of existing concrete structures.
K-12 Schools | Jul 8, 2019
Collaborative for High Performance Schools releases 2019 Core Criteria Version 3.0 Update
The update adds credits to lower carbon footprints and to promote climate change resiliency.
Wood | Jul 8, 2019
Campaign launched to promote ‘climate-smart wood’
The Forest Stewardship Council and other groups aim to help buyers understand and make it easier to locate lumber that meets sustainable forestry standards.
Urban Planning | Jul 8, 2019
U.S. cities experience ‘Doppler shift’ in walkable urban development
The walkability trend is spreading to urbanizing suburbs.
Codes and Standards | Jun 27, 2019
Construction workers need continuous skills upgrades
A report by Autodesk and Deloitte focuses on how workers can succeed in an automated world.
Codes and Standards | Jun 27, 2019
Updated standard for liquid applied flashing for exterior wall openings released
AAMA document establishes minimum performance requirements.
Codes and Standards | Jun 27, 2019
Public restrooms being used for changing clothes, phone conversations, and 'getting away'
About 60% of Americans use a public restroom one to five times a week, according to the latest annual hand washing survey conducted by Bradley Corporation.