View video below to see exactly how Stone-coated steele
roofing systems are designed and applied.
McCall Roofs is proud to support and offer the Gerard Stone coated steel metal
tile roofing panels.
For over 30 years Gerard has developed extremely durable roof tiles,
using only the highest quality raw materials and proprietary formulated coatings.
How are Gerard Panels Developed?
Gerard panels are made from the best quality structural grade steel.
They are rigid enough to tolerate reasonable loads while allowing profile designs without
the risks of cracking or significant elastic recovery. They are composed of 30% recycled steel.
Hot Dipped Zinc-Aluminum Alloy Galvanized Coating
The first barrier of protection on our rigid steel panels is achieved when
the steel passes through a bath of molten aluminum-zinc alloy. This coating combines
the protection and strength of both aluminum and zinc. Gerard aluminum-zinc
alloy coatings data indicate corrosion protection of the underlying steel exceeds
50 years in most environments.
Acrylic Priming System
An acrylic coating is applied to both sides of the panel immediately after the application
of the aluminum-zinc coatings to further enhance the longevity of the galvalume coating and underlying steel,
and provides a uniform substrate that enhances the adhesion of the additional coatings.
The base coat is a petroleum based, highly UV resistant proprietary acrylic resin binder.
This specially formulated coating is proprietary to Gerard. A choice of quality ceramic colored chips
are bonded directly to the base coat. The base coat serves two functions - to bond the stone granules,
and offer even further protection from both water and light to the underlying acrylic and galvalume coated steel.
Ceramic Coated Stone Granules
A protective coating, as well as an attractive appearance, is provided by stone granules.
They further enhance the resistance to UV light while providing an array of colors.
These ceramic coated granules are sized and applied in such a way to insure maximum coverage of the base coat;
therefore, allowing another layer of protection against weather erosion.
An acrylic over glaze with UV inhibitors is applied as a final coating that gives the granules
a semi-gloss appearance. This extremely durable acrylic finish bonds to the granules and encapsulates them
with a coating that enhances the panel’s resistance to physical damage.
907 South Jupiter
Garland, TX 75042
8415 Indian Creek
San Antonio, TX 78230