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Home » Authors » John Chamberlin
John Chamberlin

John Chamberlin

John Chamberlin is the Senior Product Manager at Georgia-Pacific responsible for DensElement Barrier System and the DensDefy line of products. He has worked in the building products industry for his entire career with most of his work focusing on new product development for disruptive technologies in the building envelope space. John is actively involved in the building industry, serving as a member of multiple committees and director for the board of the Air Barrier Association of America and a frequent attendee of his local Building Enclosure Council. He graduated from the University of Tennessee with a Bachelor of Science degree in Marketing and later received his M.B.A. from Emory University.
Articles

ARTICLES

DensDefy

Achieving WRB Continuity Across Differing Substrates

John Chamberlin
John Chamberlin
July 26, 2021
From stucco and stone, to glass and wood, a glance at any new commercial construction market shows a trend toward mixed-material facades for buildings of all types.
Read More
GP

Fire-Rated Gypsum Maximizes Wall Assembly Performance

John Chamberlin
John Chamberlin
June 9, 2021
Inherently non-combustible and more lightweight than masonry or cement board, gypsum gives commercial designers, engineers, and builders an easier path toward fire resistance compliance for interior and exterior walls.
Read More
Georgia-Pacific

Integrated WRB/AB Sheathing Builds Confidence into Simplified Building Envelopes

Combining Necessary Control Layer Continuity with Valuable Construction Efficiencies
John Chamberlin
John Chamberlin
March 8, 2021
Designers and construction specifiers should look closely at opportunities to streamline both the production process and quality control of their wall assemblies
Read More
Georgia-Pacific

Evaluating the Effectiveness of Barrier Systems in Rainscreen Assemblies

Passing the Water Penetration Test
John Chamberlin
John Chamberlin
May 6, 2020
Considering weather events, changes in temperature, and building movement, it is unlikely that any building will remain 100 percent weatherproof. But with the right materials and assembly, extra steps can be taken to reduce the risk of damage under both normal and severe weather conditions
Read More
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    Designing Low-Slope Roofs for Resilience

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    Drained and Back-Ventilated Rainscreens vs Pressurized-Equalized Rainscreens

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    The Hidden Strength of Low-Slope Roof Systems: Why Roof Cover Boards Matter

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June 17, 2025

Addressing Condensation in Low-Slope Roof Assemblies

Credits: 1 AIA LU/HSW; 0.1 ICC CEU; 1 IIBEC CEH; 0.1 IACET CEU

On Demand In modern roofing systems, vapor retarders and air barriers do more than just minimize air leakage—they’re essential to maximizing performance and longevity. This engaging course dives into the next generation of moisture control: permeable vapor retarders and air barriers. Discover how these cutting-edge technologies are transforming low-slope roofing assemblies by improving energy efficiency, managing moisture, and boosting wind uplift resistance.

April 9, 2026

Strategies for High-Performance Below-Grade Waterproofing

Credits: 1 AIA LU/HSW ; 1 IIBEC CEH; 0.1 IACET CEU

On-Demand Designing a high-performance building enclosure requires more than just surface-level protection; it demands a rigorous, performance-based mastery of below-grade water and gas mitigation. This discussion will provide an expert-level analysis of below-grade waterproofing within the comprehensive framework of the high-performance building enclosure.

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Plaster and Drywall Assemblies Manual

This is a comprehensive manual that goes beyond codes and standards, providing expert guidance in design, detailing, material selection and troubleshooting for plaster and drywall.

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