How to use this result
Use one consistent area unit and confirm what the entered rate includes.
Details dominate
Transitions, penetrations and edges may cost more than open field membrane.
Not a specification
System selection and detailing require qualified design.
Important: Requirements, permits, accessibility duties, environmental rules, workplace-safety obligations, product standards and inspection practices vary by country, province or state, municipality, building use, existing conditions and adopted code edition. Qualified local professionals and the authority having jurisdiction must determine what applies.