Commercial roofing adhesive selection becomes clearer when the first question is: what are you bonding? UNO‑FOAM® | QD3000 attaches insulation and cover boards. UNO‑GRIP™ | QD2040 bonds TPO and EPDM membranes, including fleece-backed systems. They serve different layers and are not interchangeable.
Match the adhesive to the bonded layer
QD3000 is the 48 square insulation adhesive, supplied in a 22 L disposable canister. It requires no on-roof mixing.
QD2040 is the TPO/EPDM adhesive for the listed membrane applications.
Plan around the published work window
QD3000 has a 5-minute open time and reaches handling strength in 15 minutes. QD2040 has a 2–4 minute dry time and an open time of 1+ hour.
Sequence only as much work as the crew can complete within the applicable instructions.
Estimate from published coverage
One 22 L QD3000 canister lays up to 4,800 linear feet of a 1-inch bead — at 12 inches on center that covers up to 4,800 square feet, or 48 roofing squares, depending on application.
QD2040 covers up to 10 squares / 1,000 sq ft of bonded area per 22 L canister.
Coverage varies by substrate and application. Confirm the current TDS/SDS, roof-system requirements, and project documents before use.