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Planning & Estimating

How to Estimate QDEK Canisters for a Project

Estimate 22 L canisters from published QDEK coverage, roof area, and the number of bonded layers.

Choose the product before estimating

Choose the product based on what is being bonded. UNO‑FOAM® attaches insulation and cover boards; UNO‑GRIP™ bonds TPO and EPDM membranes.

Enter the project area in roofing squares

1 roofing square = 100 sq ft. Enter the roof area the adhesive will cover.

Account for each bonded layer

UNO‑FOAM® uses roof area and bonded layers. Each bonded layer is calculated at the published coverage.

UNO‑GRIP™ uses the membrane area being bonded. Its published coverage already accounts for applying adhesive to both surfaces; do not double the area.

Understand the published coverage used

UNO‑FOAM®: up to 4,800 linear feet of a 1-inch bead per 22 L disposable canister — at 12 inches on center that covers up to 4,800 square feet, or 48 roofing squares, depending on application.

UNO‑GRIP™: up to 10 squares / 1,000 sq ft of bonded area per 22 L disposable canister.

Treat the result as an estimate

The result is an estimate. Coverage varies by application and depends on temperature and humidity. Review the current TDS and SDS.

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