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Johns Manville Technical Blog — Insulation & Roofing Insights

In-depth articles on insulation R-values, roofing system selection, energy code compliance, and building envelope best practices from our team of product engineers and technical specialists.

Technical Blog

Doing It Right vs Cutting Corners: A Johns Manville GoBoard Contractor's Honest Comparison

I've made $28,000 in mistakes as a contractor. Here's my comparison of using Johns Manville products through an authorized distributor and following installation guides vs cheap alternatives—covering GoBoard, window glass replacement, stained glass film, and even Minecraft smooth stone. [...]