What is thermal bluestone?
Thermal bluestone is natural stone that has been flame-treated to create a uniform texture on the surface. This process, also known as flaming, produces a slightly textured, non-slip surface ideal for outdoor applications while maintaining the stone’s natural beauty. The thermal treatment breaks away microscopic particles on the surface, resulting in a consistent, slip-resistant finish that’s perfect for patios, pool decks, and walkways.
Where does Pennsylvania bluestone come from?
Pennsylvania bluestone is quarried primarily in northeastern Pennsylvania and southern New York State. These quarries tap into ancient sedimentary deposits formed over long ago when the region was covered by a vast inland sea. This unique geological history gives Pennsylvania bluestone its distinctive character and durability that has made it a sought-after building material for generations.
What colors does Pennsylvania bluestone come in?
Pennsylvania bluestone is available in two main color varieties:
- Uniform Blue-Grey: A consistent steel blue-grey tone sometimes called blue-blue that provides a clean, contemporary look.
- Full Range Color: A varied palette containing beautiful shades of blue, brown, rust, and lilac that create a natural, earthy appearance
How thick should bluestone be for different applications?
- Hearths: Typically 1½ or 2 inches thick
- Patios and walkways: Minimum ¾ inch recommended, with 1 inch to 2 inches being standard
- Stepping stones: 1 to 2 inches thick for stability
- While bluestone can be cut as thin as ½ inch, we recommend ¾ inch or thicker for most applications to ensure durability and prevent cracking.
What are the maximum dimensions available for Pennsylvania bluestone?
We can provide bluestone in pieces as large as approximately 10 feet by 5 feet. However, shipping pieces larger than 92 inches in length or 24 inches in width requires special crating and handling considerations. For larger areas, multiple pieces can be arranged in attractive patterns.
What edge styles are available for Pennsylvania bluestone?
Popular edge styles include:
- Square: Clean, modern lines with crisp edges
- Chiseled: Hand-worked edges with a natural, rustic appearance
- Bull Nose: Smooth, rounded edges for a refined look
- Radius Top: Curved upper edge with square bottom
- Radius Top and Bottom: Both edges smoothly curved
- Beveled: Angled edges that create subtle shadow lines
Custom edge treatments are also available to match your specific design vision.
What surface finishes can I choose for Pennsylvania bluestone?
Common surface finishes include:
- Thermal/Flamed: Slightly textured, non-slip surface ideal for outdoor use
- Honed: Smooth, matte finish perfect for interior applications
- Sand Blasted: Textured surface with a weathered appearance
- Brushed: Softly textured with a subtle worn look
- Thermal Brushed: Combination finish with unique character
- Polished: Smooth, reflective surface highlighting the stone’s natural beauty
Each finish affects both the appearance and functionality of the stone.
How do I cut Pennsylvania bluestone?
For cutting bluestone:
- Use a wet saw with a diamond blade designed for stone cutting
- Mark your cut line clearly with a pencil or chalk
- Cut slowly and steadily, allowing the blade to do the work
- For intricate cuts, consider hiring a professional stone fabricator
Always wear appropriate safety gear including eye protection, gloves, and dust masks when cutting stone.
What installation methods work best for Pennsylvania bluestone?
Common installation methods include:
- Wet-set/Mortar Bed: Bluestone is set in a mortar bed over a concrete base, ideal for patios and walkways requiring permanent, stable surfaces
- Dry-set/Sand Set: Stones are placed on a compacted base of gravel and sand, allowing for natural drainage and a more informal appearance
- Pedestal System: Bluestone tiles are supported on adjustable pedestals, creating a level surface with excellent drainage for rooftop applications
- Thin-set Method: For interior applications or when installing over an existing concrete surface
The best method depends on your specific application, climate considerations, and desired aesthetic.
How do I maintain Pennsylvania bluestone?
- Regular cleaning: Sweep and rinse with water to remove debris
- Seasonal care: Clean thoroughly twice yearly with mild soap and water
- Sealing: While optional, a quality stone sealer can enhance color and provide stain protection
- Stain removal: Address spills promptly; use stone-specific cleaners for stubborn stains
- Winter care: Use calcium chloride-based ice melt products instead of rock salt to prevent surface damage
With proper care, Pennsylvania bluestone will maintain its beauty for generations.
Is Pennsylvania bluestone environmentally friendly?
Yes! Pennsylvania bluestone is a sustainable choice because:
- It’s a natural material quarried within the United States, reducing transportation carbon footprint
- The quarrying process has minimal waste as nearly all extracted material can be used
- Its exceptional durability means it won’t need replacement for decades or even centuries
- At the end of its useful life, it can be repurposed or will naturally return to the earth
Choosing Pennsylvania bluestone supports local American industry while providing an environmentally responsible building material.
How does Pennsylvania bluestone compare to other paving materials?
Compared to concrete, manufactured pavers, and other natural stones, Pennsylvania bluestone offers:
- Superior durability: Withstands freeze-thaw cycles better than most materials
- Timeless appeal: Classic good looks that never go out of style
- Unique character: Natural variations ensure your project is one-of-a-kind
- Excellent value: Higher initial cost but exceptional longevity means lower lifetime cost
- Versatility: Works beautifully in both traditional and contemporary designs
While the initial investment may be higher than some alternatives, Pennsylvania bluestone’s longevity and timeless appeal make it an excellent value.
