Denver-based Johns Manville's Roof TechXpert app features several tools to help roofing workers at a job site, including a built-in adhesive advisor that gauges approximate flash times; reference library with technical information about Johns Manville products and application and troubleshooting information; and a tech rep locator.

To access the app in the Apple App Store, click here.

To access the app in Google Play, click here.

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