Archive for Technical Bulletins

IWCA Technical Bulletin Number 2 – Roof Anchorage, Installation, Testing & Certification

IWCA Technical Bulletin Number 2-August 2022


When a rope descending system (RDS) is used on a building, OSHA regulations require a building owner to
inform the employer, in writing, that the building owner has identified, tested, certified, and maintained each
anchorage so it is capable of supporting at least 5,000 pounds (2268 kg), in any direction, for each employee

There is no definition for certification in OSHA, but all related American National Safety Standards define
certified as “accepted by design, evaluation or inspection by a registered professional engineer.”
When a professional engineer (P.E.) certifies a roof anchorage system, their evaluation and acceptance at a
minimum, should state the anchorages are certified to be capable of supporting 5,000lbs in any direction for
each employee attached. Variations could be considered if the intent is clear and verifies compliance with
OSHA and American National Safety Standards.

Some anchor companies state their anchors (anchorage connectors) are capable of supporting 5000lbs in any
direction and will not break or become detached. They also defer the ability of the structure to support the
loads applied by the anchor to be verified by someone else. That someone will need to be the P.E. who is
certifying the system……..Read more in the PDF attached.

IWCA, NGA, & GANA: Proper Procedures for Cleaning Architectural Glass Products

This joint technical Bulletin is the pinnacle of a huge cooperative effort between NGA, GANA, and IWCA.,” shares Paul West, IWCA Glass Committee Chair. “The end result is real world cleaning guidelines that will assist in maintaining the integrity of architectural glass surfaces.”

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Systematic Cleaning and Restoration of Architectural Glass

This bulletin provides scientific evidence and answers to the question: How often should I have my glass cleaned, and Why? This document will prove to be invaluable to window cleaners who wish to provide industry evidence as to why a glass cleaning maintenance schedule is required to maintain the longterm integrity of their glass.

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Construction Site Protection and Maintenance of Architectural Glass

This bulletin outlines the need for proper protection of architectural glass throughout the construction process to all general contractors and builders. This protection includes various recommendations and the need for open communication and full cooperation among the General Contractor, Professional Window Cleaner, and all trades involved.

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TechBulletin #1 – ArtilleryFungus

This technical bulletin covers artillery fungus and the different methods of removing it from houses and windows.

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