In construction and re-roofing projects, the design authority members, including structural engineers, architects, and consultants, are responsible for inspecting the roof decking. They must ensure that it meets the specific design and construction requirements of the project. Qualified professionals, such as structural engineers, steel deck contractors, consultants, and designers of record, are tasked with evaluating the roof deck’s slope, structural integrity, attachment methods, missing shingles, and other relevant factors.
Impact of a Faulty Roof Deck
This due diligence is essential, as a compromised roof deck can undermine the effectiveness of the entire roof system. Without a proper roof system installed on the deck, there is a risk of water infiltration, which can result in structural damage, mold growth, and various other concerns for building owners and managers. Additionally, water leaks and roof penetrations can damage the structure’s ceiling, walls, and insulation, resulting in expensive repairs.
A compromised roof deck can lead to various additional issues. It can adversely affect insulation and ventilation, causing inconsistent temperatures and higher energy costs over time for occupants and building owners. Proper ventilation removes excess heat and moisture, maintaining a comfortable indoor environment. However, trapped heat and moisture can result in mold growth, wood rot, and elevated humidity levels in the roofing system.
Roof Inspection: Guidelines for Roofing Contractors
You’ve likely encountered these issues firsthand on the job. However, what you might not know is that the roofing contractor (foreman or superintendent) is only required to visually review the surface of the roof decking to confirm it’s suitable for the installation of the roofing components. The surface must be free of defects or deficiencies such as delamination, large cracks, and corrosion. A roofing contractor cannot assume responsibility for the deck’s slope, structural integrity, method of attachment, equipment or services installed below the deck equipment or any other conditions beyond their control.
In this situation, caution is paramount. It’s recommended that the roofing contractor, along with the appropriate parties, conduct a visual assessment. Project specifications should clearly outline the guidelines for professional roof inspection and/or repairing a roof deck and identify the responsible parties. The roofing contractor should visually inspect the deck surface, ensuring it is clean, dry, and even, and suitable for installing the roof system components and other roofing materials.
Roofing contractors should obtain written confirmation from the owner’s representative (such as an engineer, consultant, or designer of record) stating that the roof deck meets the appropriate design criteria and has been constructed according to the design requirements. Without this documentation, the roofing contractor cannot, in good conscience, assume the roof deck meets all necessary criteria. Installing a roof system on a sub-standard deck could lead to the contractor assuming legal responsibilities, which could have been avoided with proof of a proper deck inspection.
If the roofing contractor identifies any concerns about the condition of the deck surface during their inspection, they should communicate with the design authority, building owner, or general contractor. Any issues must be resolved before accepting the deck. Essentially, once the roofing contractor commences roof installation, they are confirming acceptance of the surface condition of the roof deck.
The lesson here? Protect your reputation and sanity by making sure you follow industry best practices. One oversight could cost you your peace of mind. Don’t be afraid to ask tough questions and follow up accordingly.
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