Accessory dwelling units
An ADU is a small building on a constrained site next to somebody's house. Speed, quiet erection and panels light enough to place by hand all matter more than they would on an open lot.
The site is usually a backyard with limited access, so a panel that one or two installers can lift, or a Lull or Gradall can set, suits it better than one that needs heavy lifting equipment. Construction happens next to people who live there, which puts a premium on a short, tidy build.
ADUs are also small enough that the envelope dominates the energy use, and are frequently required to meet a high efficiency standard as a condition of the zoning that permits them.
Guardian names ADUs as a distinct residential market. The Product Performance Analysis published on this site is DEMO Architecture's all-electric ADU proposal for the town of Kingston, which Guardian priced.
What Guardian publishes
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ADUs, or accessory dwelling units, are named as a residential market.
Source · Market page
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Panels can be placed by hand or with a Lull or Gradall, and need no special equipment.
Source · Differentiation sheet
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The Product Performance Analysis document is DEMO Architecture PLLC's ADU proposal for the town of Kingston, RFP K23-15, with pricing help from Guardian Structural Technologies.
Source · Product Performance Analysis
Published by Guardian Structural Technologies. Last updated .
Drafted from our product literature and published building-science sources. Awaiting our technical review. Confirm any figure against the current product documents or ask us before you rely on it in a design.