Type B Metal Roof Deck Cost Comparison: G60 vs G90 Galvanized Finish in Florida
We offer Type B metal roof decking for Florida projects, providing G60 and G90 galvanized finish options with certified materials, engineering support, and installation services to ensure code compliance, durability, and long-term cost efficiency in coastal environments.
Summary
- - G90 stronger corrosion resistance in Florida
- - Budget for life-cycle costs not just material
- - Miami Metal Deck offers specification and installation
Miami Metal Deck examines how the cost of a Type B roof deck with G60 galvanized finish compares to G90 in Florida. This article explains specification differences, life-cycle considerations, procurement strategies, and coastal performance factors so you can select the right Type B metal roof deck for durability and budget in Florida markets.
Key Differences Between G60 and G90
G60 and G90 are ASTM coating descriptors indicating zinc coating weight; G90 carries more zinc than G60, providing better corrosion resistance in high-moisture and salt-air environments common in Florida. That additional protection typically extends coating life, reduces recoating frequency, and lowers corrosion risk for Type B metal roof decks.
Comparison of installed cost depends on material specification, local labor, freight, availability, warranty levels, and project schedule. Owners and contractors should evaluate total installed cost and life-cycle cost, not just per-sheet material price, to capture maintenance, recoating, and risk of premature replacement when choosing between G60 and G90.
How Costs Compare in Florida Markets
Upfront material cost for G90 is generally higher than G60 due to greater zinc mass, but in Florida coastal exposure the total cost of ownership often favors G90 because of longer corrosion protection and lower maintenance demands. For projects near salt water, G90 can reduce long-term risk and lifecycle expense despite higher initial material cost.
Budgeting best practices include requesting itemized bids that separate material, labor, coatings, and warranty, performing a life-cycle cost analysis to compare long-term expenses, specifying coating and paint systems for marine environments, and leveraging local suppliers to reduce freight and lead times.
Selecting the Right Specification for Your Project
Decide based on exposure classification, service life expectations, roof system type, and maintenance access. For direct coastal exposure or projects needing long service life with minimal maintenance, G90 or additional protective coatings are recommended. For sheltered or interior decks, G60 may be acceptable when integrated with appropriate membranes and treatments.
Miami Metal Deck offers local code expertise, certified installers, and supplier relationships to help balance upfront budget and long-term value. We provide specification guidance, engineering support, and installation oversight to ensure your Type B metal deck meets performance expectations in Florida climates.
Miami Metal Deck Advantages
Local Florida experience, rigorous quality control, transparent estimating, and warranty facilitation set Miami Metal Deck apart. Our team focuses on life-cycle thinking, value engineering, and compliance with ASTM standards and local building codes to deliver durable Type B roof decks with G60 or G90 galvanized finishes.
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