When exploring limestone options, you invariably hear about Type II and Type III limestone, and you may rightly assume that the higher the type number the better the limestone. But, what does “better” really mean in terms of quality and price?
Density is the Key Differentiator
Stone classifications are defined and applied by the American Society for Testing and Materials (ASTM), and are based upon how limestone samples respond when specific characteristics like compressive strength and absorption are tested.
Not surprisingly, density influences how the limestone performs in both ASTM tests and in various architectural applications. Ranging from low to high, density corresponds with the ascending numeric order of limestone type. In the case of Type II and Type III limestone, Type II Oolitic Limestone offers mid-range density and medium strength. Type III Dolomitic Limestone is of highest density quality and high strength, which translates to building materials with superior characteristics for commercial and residential projects.
Price vs. Value
Given the advantages Type III Dolomitic Limestone has over its Type II Oolitic counterpart in freeze-thaw durability, longevity and safety, the disparity in price points between the two can be substantial. While both types offer aesthetic appeal and qualities you won’t find in man-made cast stone, choosing to budget for Type III Dolomitic Limestone is a true investment in stone that flawlessly performs for a lifetime — value that transcends the monetary savings you might realize by purchasing Type II limestone upfront.
To gain a better understanding of what Type III Dolomitic Limestone offers in terms of quality, visual appeal and value, click the button below to request samples.