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Document record
This five-page application guideline covers the Ure-A-Max roof restoration system over modified bitumen roof surfaces. The header dates the last revision to 4/25/25. Its general section says each job must be approved by American WeatherStar before it begins.
The products section lists Aliphatic Urethane 510-CA in white, Aromatic Urethane 520 in silver, Aromatic Urethane 508 in dark gray, Urethane Brush-Grade 522 in silver, spunbound polyester fabric and EcoCleaner 925. The Aromatic Urethane 520 entry gives a viscosity of 2000 cps and a tensile strength of 975 plus or minus 25 psi.
Preparation includes pressure washing at a minimum of 3,000 psi, routing of HVAC condensate drains, and repair of wet insulation and damaged membranes. The primer stage recommends an adhesion test. Seams and parapet walls are flashed with Urethane Brush-Grade 522 at 50 wet mils, and penetrations at 90 wet mils with a minimum 60 mil dry film thickness.
Material changes / notes
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