Galvanized vs Stainless Steel Fasteners

There is a lot to consider when choosing which fasteners to work with on a job. When installing Enviroshake, we recommend stainless steel fasteners for all areas, but especially if you are coastal.

Here’s why:

Generally, galvanized steel is more ductile and easier to work with than stainless steel, but stainless steel is stronger and more resistant to corrosion than galvanized steel. Stainless steel has built-in defenses against rust, whereas galvanized steel’s layer of zinc coating poses higher risk to rust and corrosion. Stainless steel provides the longevity that can keep up with the longevity of our roofing tiles. With a 50 year limited lifetime warranty, you want all of your accessories to live up to the lifespan of your Enviroshake roofing material.

Exposure Conditions

It is crucial to evaluate the environment you are working in when selecting fasteners. Metal fasteners could corrode and lose load-carrying capacity when installed in corrosive environments or when installed in contact with corrosive materials.

Many environments and materials can cause corrosion including ocean salt air, re-retardants, fumes, fertilizers, preservative-treated wood, de-icing salts, dissimilar metals and more.

The many variables present in a building environment make it impossible to accurately predict if, or when, corrosion will begin or reach a critical level This relative uncertainty makes it crucial that specifiers and users are knowledgeable of the potential risks and select a product suitable for the intended use.

Types 316/305/304 stainless steel, copper, silicon bronze and hot-dip galvanized (Class-C) are the most effective protection against corrosion risk, where Type 316 is the best choice for salt marine and chloride containing environments regardless of treatment chemicals or wood species.

Types 304 and 305 stainless steels are nickel-chromium austenitic grades of stainless steel. They provide very good corrosion resistance and are suitable for use in many corrosive environments

Type 316 stainless steel is a nickel-chromium austenitic grade of stainless steel with 2-3% Molybdenum Type 316 stainless steel is not hardened by heat treatment and is inherently nonmagnetic It provides a level of corrosion protection suitable for severe environments, especially environments with chlorides.

Where can you purchase fasteners?

Don’t just think of Enviroshake for your roofing tile needs, we also have fasteners in stock! We offer bugle-head screws and large head ring shanked nails in Types 304 and 316 stainless steel in both coiled and loose options.

Interested in learning more? Contact us today.