Fenestration Mockup Guide
Fenestration—the arrangement of windows and doors on the elevations of a building—generally benefits from performance-verification field testing for potential leakage of air and water through observation, expertise, and reporting. With that in mind, we offer here a template of protocols GTG applies in reviewing a fenestration mockup.
Before the mockup, we ensure our readiness by following a few simple guidelines. Equipment, such as a tape measure, a camera, and pen and paper (or tablet) are essential for productively documenting the process. Hard copies of relevant contract sections and documents provide points of reference when asking questions and having conversations about project specifications, drawings, and submittals related to the mockup. The preparation process may be further organized using the verify-request-review process as follows:
• Verify that all stakeholders (general contractor, construction manager, installer, manufacturer, designer of record, subcontractor, waterproofing consultant, etc.) have been invited to observe the mockup with adequate notice.
• Verify you have the latest drawings and specifications per the contract. Request copies of ASIs or RFIs that may modify fenestration products or flashing installations per the contract.
• Request copies of the fenestration product and flashing submittals approved by the designer of record.
• Review the scope of mockup as indicated in project specifications and check if the scope satisfies your client's expectations. We suggest confirming with the client.
No matter the type of mockup or the number of fenestration mockups to be performed, whether for recessed windows, flush windows, or sliding glass doors, a simple method of verifying, requesting, and reviewing provides a foundation for expertly recording the mockup.
During the mockup, note all relevant action and information so that the process of observe-and-report is as efficient and effective as possible. Engage with your role in the mockup through a process of record, document, note, verify, and request as follows:
• Record who is present (and not present) for testing and their affiliation with the project. Specifically note whether the designer-of-record or approving authority is not present.
• Record who is performing the mockup.
• Note whether the mockup installer has copies of contract documents (project specifications, drawings and submittals).
• Record the location of the mockup (whether it is free-standing of the building or within the building).
• Document all products used during mockup including, but not limited to, fenestration products, sealants, SASM, WRB, primers, sheet metal flashings, and fasteners. Note whether any products from different manufacturers are to be used in conjunction and direct contact with one another as they might not be compatible and such an installation may void product warranties.
• Verify that AAMA labels (usually in frame) and NFRC labels are affixed to fenestration products and that they depict performance ratings that are in accordance with contract documents (project specifications, drawings and submittals).
• Document the step-by-step installation of the mockup, noting relevant dimensions and comparing with those specified in the contract documents.
• Document discrepancies (if any) between the flashing products, methods and sequence observed during the mockup and what is indicated in the contract documents. Note if the discrepancies have been accepted by the designer of record or approving authority.
• Be careful not to direct the mockup installation. All direction on the mockup installation should be from the designer of record or approving authority. Notify the mockup attendees if you identify any discrepancies between the mockup and what is indicated in the contract documents.
• Note installation quality issues (e.g. excessive fishmouths and wrinkles present in the SASM).
• Note if the mockups are not performed on specific fenestration types where required by contract documents and the proposed schedule for remaining mockups (if applicable).
• Request a copy of the mockup report issued by designer of record or approving authority.
After the mockup, make a point of observing fenestration installations during subsequent site visits. Remain cognizant by comparing other fenestration installations with the flashing sequence of the mockup recorded and approved by the designer of record, noting and reporting any discrepancies.
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Avondale Town Center
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GTG is also delighted to welcome back Amy Lalonde as a Project Architect in our Chicago office. Amy previously worked as part of GTG for a number of years beginning in 2012, and recently rejoined our team. Amy is a licensed architect in the state of Illinois, and she holds a Master of Architecture degree from the Illinois Institute of Technology and brings over ten years of professional experience to our team.