Phone: 303-322-9009

Natural Stone Veneer in Denver – Why Exceeding ASTM Standards Matters

Filed under: Natural Stone Veneer — Tags: , — procoat @ 4:44 pm March 4, 2016

When a client elects to use a natural stone veneer in Salt Lake City or Denver markets, especially in an outdoor application, the question as to its ultimate durability usually comes up. After all, to limit the weight of each panel, the reclaimed stone used by top manufacturers, such as Realstone Systems, seems impossibly thin in cross section.

ProCoat-KW Natural Stone Veneer 3-16The proper engineering of thin natural stone veneer panels makes all the difference that the installation last for decades with a minimum of care. Realstone takes extraordinary pains to exceed the American Society for Testing Materials International, (ASTM) standards for compression strength, rupture and flex strength, both when wet and dry, as well as ensuring their panels come out of freeze/thaw testing unscathed.

Our High Altitude Winters Are Tough, Our Natural Stone Veneer is Tougher

The ASTM C568 and C616 standards calls for a real stone veneer product, such as Realstone makes, to be able to withstand at least 4,000 psi of compression for limestone based product and 10,000 psi for quartz based product, both in parallel and perpendicularly, without failure. Samples submitted to ASTM by Realstone regularly exceed these standards by at least a third, if not by half, no matter the product tested.

 Natural Stone VeneerFor both rupture and flex testing, the minimum standard for limestone-based product is 500 psi before failure, for quartzite type product the minimum is 1,000 psi. Once again, Realstone is designed to exceed these standards, by as much as three times the standard in the first category and at least double the standard for the second.

As for freeze/thaw testing, ASTM C216 demands that randomly delivered product withstand 50 cycles of being immersed in a tray of frozen water for 20 hours and then thawed for four hours before being refrozen. To pass, the panel samples have to not crack or lose more than three percent of their volume by visual inspection. At the end of 50 successful cycles without apparent damage, the samples are reweighed to check for material loss that can’t be visually detected. To pass, the samples cannot have lost more than 0.50 percent of their dry weight. Samples of natural stone veneer submitted by Realstone Systems have passed that  freeze/thaw testing with no adverse effects at all, remaining stable in both weight and dimension.

What Does It All This Testing Mean?

When ProCoat Systems decides to carry a product line, it has to be something we can stand behind with our contractors and builders. If we can’t assure our customers that the product is sound and if installed properly won’t cause any liability or call back repairs, then we don’t offer it. It’s the way Procoat has operated and one of the reasons we have been in business supplying contractors with quality exterior building envelop products for more than 30 years. As such, we  only carry natural stone veneer you can trust. If you want your stone cladding installation to still be solid far beyond your retirement from the business, contact us. We now offer Realstone and other stone and cultured stone veneer products in our Denver, Fort Collins and Salt Lake City markets.