About Castohn Mountain Slate 24″ × 36″ Paver
Castohn Mountain Slate 24″ × 36″ is a large-format wet-cast concrete paver designed to recreate the texture and visual depth of natural slate while maintaining the dimensional consistency of a manufactured paving unit.
The large rectangular format gives patios, walkways, courtyards, pool decks, and other pedestrian hardscapes a substantial architectural appearance with fewer joints than smaller pavers.
Outdoor Warehouse Supply offers the Castohn Mountain Slate 24″ × 36″ paver as a special-order product.
Customers planning to use this material should contact our Plano or Lewisville sales staff for:
- Current manufacturer availability
- Available colors
- Lead times
- Full-pallet requirements
- Delivery or pickup options
| Product Details | Specifications |
|---|---|
| Product Name | Castohn Mountain Slate 24″ × 36″ Paver |
| Brand | Castohn |
| Product Type | Large-Format Wet-Cast Concrete Paver |
| Nominal Size | 24″ × 36″ |
| Nominal Thickness | 2-1/2″ |
| Nominal Surface Area | 6 sq. ft. per paver |
| Surface Texture | Natural slate texture |
| Edge Style | Eased edges |
| Appearance | Natural stone-inspired with slight color variation |
| Typical Applications | Patios, walkways, courtyards, pool decks & landscape paving |
| Availability at OWS | Special Order |
| Service Area | Dallas–Fort Worth & North Texas |
Castohn identifies Mountain Slate as a large-format wet-cast collection with a consistent 2-1/2″ thickness, accurate dimensions, realistic slate texture, eased edges, and natural-looking color variation.
What Is Castohn Mountain Slate?
Mountain Slate is a manufactured wet-cast concrete paving collection designed to capture the appearance of natural slate.
Unlike ordinary flat concrete slabs, the surface is molded with texture intended to replicate:
- Natural slate layering
- Subtle surface movement
- Stone-like texture
- Organic visual variation
This creates a more architectural appearance while retaining predictable dimensions.
What Does Wet-Cast Concrete Mean?
Wet casting uses a wetter concrete mixture poured into molds that reproduce detailed textures.
Castohn specifically highlights wet-cast production because it allows the concrete to reproduce natural textures and details more realistically than many standard dry-cast products.
Wet-cast products can offer:
- Greater surface detail
- Natural-looking color transitions
- More realistic stone texture
- Consistent thickness
- Durable concrete construction
Why Choose a Slate-Texture Paver?
Natural slate is beautiful, but natural stone can vary in:
- Thickness
- Flatness
- Dimensions
- Surface texture
Castohn Mountain Slate provides a slate-inspired appearance while maintaining a consistent manufactured thickness.
That can simplify installation and help create a more uniform finished walking surface.
Mountain Slate 24″ × 36″ Dimensions
The 24″ × 36″ Mountain Slate paver measures approximately:
- 24 inches wide
- 36 inches long
- 2-1/2 inches thick
A 24″ × 36″ rectangle contains approximately:
6 square feet of nominal surface area
per piece.
That large surface area allows installers to cover substantial space with relatively few units.
Why Use a Large-Format Paver?
Large-format pavers create a very different visual effect from smaller modular pavers.
Benefits include:
- Fewer visible joints
- Cleaner architectural lines
- Larger visual scale
- Modern design potential
- Less repetitive patterning
- Strong visual impact in open spaces
The 24″ × 36″ format works especially well where designers want the paving itself to become a major visual feature.
Mountain Slate for Patios
Large residential patios are an excellent application.
The large rectangular slabs can create:
- Modern layouts
- Offset running patterns
- Linear designs
- Broad stone-inspired surfaces
The slate texture provides visual interest while the large dimensions keep the finished surface from looking overly busy.
Mountain Slate for Walkways
The 24″ × 36″ format can also work well in wider pedestrian walkways.
Potential layouts include:
- Straight running patterns
- Staggered patterns
- Large stepping-style layouts
- Formal garden walks
Proper base preparation and edge restraint remain important.
Mountain Slate for Courtyards
Courtyards are especially well suited to large-format paving.
The paver’s natural-stone appearance can complement:
- Modern architecture
- Mediterranean designs
- Traditional masonry
- Natural stone walls
- Contemporary landscape planting
Mountain Slate for Pool Decks
Mountain Slate may be used in compatible pool-area pedestrian hardscapes.
Its large slate-textured surface can create a high-end architectural appearance around:
- Pools
- Spas
- Outdoor kitchens
- Pool houses
Pool-deck designs should still account for:
- Drainage
- Finished slope
- Slip considerations
- Coping transitions
- Joint material
- Local construction requirements
What Does the Surface Look Like?
Castohn describes Mountain Slate as having an authentic natural slate texture.
Customers should expect a textured appearance rather than a perfectly smooth concrete surface.
This can provide more visual depth and a more natural appearance than standard flat concrete slabs.
Does Mountain Slate Have Sharp Edges?
Castohn identifies the Mountain Slate collection as having eased edges.
Eased edges help soften the appearance and make the units look less mechanically sharp.
Are All Mountain Slate Pavers Exactly the Same Color?
No.
Castohn specifically notes that slight color variation is intentional and helps create a more natural appearance.
Customers should expect some variation between units.
For larger installations, mixing material across pallets or layers can help distribute natural shade differences throughout the project.
What Colors Are Available?
Castohn’s current South-region Mountain Slate collection lists:
- Graphite
- Chocolate
- Pearl
- Southern Buff
Because this product is special order through OWS, customers should confirm the currently available color before placing an order.
Manufacturer color availability can change over time.
Graphite Mountain Slate
Graphite provides a darker gray appearance.
It works especially well with:
- Modern homes
- Charcoal hardscapes
- Black steel edging
- Cool-toned stone
- Contemporary landscape designs
Chocolate Mountain Slate
Chocolate provides a warmer brown-toned appearance.
It can complement:
- Brown stone
- Warm brick
- Rustic landscapes
- Earth-tone planting schemes
Pearl Mountain Slate
Pearl provides a lighter, more neutral appearance.
It may pair well with:
- White limestone
- Cream masonry
- Light stucco
- Bright contemporary architecture
Southern Buff Mountain Slate
Southern Buff provides a warm buff or tan appearance.
It can coordinate well with:
- Tan limestone
- Cream stone
- Warm natural landscapes
- Traditional North Texas architecture
Is Castohn Mountain Slate Natural Stone?
No.
It is a manufactured wet-cast concrete paver designed to replicate the texture and visual qualities of natural slate.
That distinction gives customers:
- More consistent thickness
- More predictable dimensions
- Easier layout planning
while preserving a natural-stone-inspired appearance.
Mountain Slate vs. Natural Slate
| Castohn Mountain Slate | Natural Slate |
|---|---|
| Wet-cast concrete | Natural stone |
| Consistent 2-1/2″ thickness | Thickness may vary |
| Predictable dimensions | Natural dimensional variation |
| Slate-inspired molded texture | Natural geological texture |
| Easier layout planning | More sorting/fitting may be required |
| Controlled color families | Natural color variation |
Mountain Slate vs. Standard Concrete Pavers
| Mountain Slate | Standard Concrete Pavers |
|---|---|
| Large-format slab | Usually smaller modular units |
| Natural slate texture | Often smoother or patterned texture |
| 24″ × 36″ size | Typically smaller dimensions |
| Wet-cast appearance | Often dry-cast construction |
| Architectural stone look | More traditional paver appearance |
Does the 24″ × 36″ Size Make Installation More Difficult?
Large-format pavers generally require more care than small pavers.
Their larger size means installers need to pay particular attention to:
- Base flatness
- Bedding consistency
- Handling
- Placement
- Avoiding unsupported corners
- Joint alignment
Small imperfections underneath a large slab can create rocking or stress points.
How Should the Base Be Prepared?
The exact installation system should follow Castohn’s current large-format paver guidance and the site requirements.
A typical pedestrian hardscape installation generally includes:
- Excavation
- Properly compacted subgrade
- Compacted aggregate base
- Uniform bedding layer
- Paver placement
- Edge restraint
- Compatible joint material
- Final surface inspection
The base should be especially flat for large-format units.
Why Is Base Flatness So Important?
A large paver spans more area than a small paver.
If the bedding surface has:
- High spots
- Voids
- Uneven compaction
the paver may not receive uniform support.
That can contribute to:
- Rocking
- Cracking
- Uneven surfaces
- Edge movement
Careful preparation is one of the most important parts of large-format installation.
Can Mountain Slate Be Installed on Concrete?
Some large-format pavers can be installed in overlay or mortar-set systems when manufacturer-approved.
However, customers should follow Castohn’s specific installation guidance for the intended system rather than assuming every substrate is acceptable.
Existing concrete also needs to be evaluated for:
- Cracking
- Drainage
- Slope
- Structural stability
What Joint Material Should Be Used?
The joint material depends on:
- Joint width
- Installation method
- Base system
- Manufacturer recommendations
Compatible polymeric sand or other approved jointing materials may be appropriate depending on the joint dimensions.
The jointing product manufacturer’s specifications should always be checked before use.
Can Alliance Gator Polymeric Sand Be Used?
Potentially, provided the selected Alliance Gator product is compatible with:
- Joint width
- Joint depth
- Base configuration
- Castohn’s installation method
For relatively narrow joints, a product such as Gator Maxx G2 may be suitable when all Alliance specifications are met.
Do not select polymeric sand based solely on brand.
Does Mountain Slate Need Edge Restraint?
For most sand-set or flexible-base installations, an appropriate edge restraint is important.
Edge restraint helps prevent the perimeter pavers from moving outward and allowing joints to open.
The exact restraint should match the installation system.
Can Mountain Slate Be Cut?
Yes.
Wet-cast concrete paving units can be cut where necessary around:
- Borders
- Corners
- Structures
- Drainage features
- Curves
Because the 24″ × 36″ slab is large and thick, appropriate professional masonry-cutting equipment is recommended.
Always follow proper silica-dust controls and PPE requirements.
How Much Area Does One Paver Cover?
A 24″ × 36″ paver has a nominal surface area of:
6 square feet
before accounting for joints.
That makes quantity estimating straightforward.
How Many Pavers Do I Need?
A simple starting calculation is:
Project square footage ÷ 6 = approximate number of 24″ × 36″ pavers
For example:
| Project Area | Approx. Pavers Before Waste |
|---|---|
| 60 sq. ft. | 10 |
| 120 sq. ft. | 20 |
| 300 sq. ft. | 50 |
| 600 sq. ft. | 100 |
Always allow additional material for:
- Cuts
- Breakage
- Pattern layout
- Field conditions
- Future replacement
How Much Extra Material Should I Order?
The appropriate waste factor depends on:
- Project shape
- Number of cuts
- Pattern
- Border design
- Installer preference
Simple rectangular layouts generally require less waste than projects with curves, angles, or numerous obstructions.
Because Mountain Slate is a special-order item, ordering adequate material at the beginning is especially important.
Is the 24″ × 36″ Mountain Slate Paver Heavy?
Yes.
Large wet-cast concrete pavers are significantly heavier than small conventional pavers.
A current industry listing for the same 24″ × 36″ × 2-1/2″ Mountain Slate size lists an approximate individual weight of around 200 lb. per piece.
Because weights can vary by production region and source, OWS should verify current pallet and individual weights before publishing an exact pickup figure.
For installation, customers should plan for appropriate:
- Handling equipment
- Lifting methods
- Crew size
- Jobsite access
Is Mountain Slate Good for DIY Projects?
Smaller projects may be possible for experienced DIY customers, but the 24″ × 36″ size is substantially heavier and more difficult to manipulate than ordinary pavers.
Professional installation may be preferable for:
- Large patios
- Pool decks
- Complex patterns
- Sites with limited access
- Projects requiring many cuts
Is Mountain Slate Suitable for Vehicle Traffic?
I would not advertise the 24″ × 36″ Mountain Slate as a driveway paver without project-specific manufacturer confirmation.
Large-format slabs behave differently under vehicle loads than smaller interlocking concrete pavers.
This page should primarily position it for pedestrian hardscape applications such as:
- Patios
- Walkways
- Courtyards
- Pool decks
unless Castohn specifically approves the intended vehicular system.
Can Mountain Slate Be Sealed?
A compatible wet-cast concrete sealer may be used when desired.
Sealing may help provide:
- Stain resistance
- Easier cleaning
- Color enhancement
However, sealers can alter:
- Color
- Sheen
- Surface appearance
Always test the selected sealer on a small area first.
How Should Mountain Slate Be Cleaned?
Routine maintenance may include:
- Sweeping
- Removing leaves and organic debris
- Promptly cleaning spills
- Using compatible concrete cleaners when required
Avoid aggressive cleaning methods or chemicals that are not approved for wet-cast concrete.
Is Efflorescence Possible?
Like other cement-based concrete products, wet-cast concrete can sometimes show temporary light mineral deposits called efflorescence.
This results from soluble salts migrating to the surface with moisture.
Efflorescence is primarily an appearance issue and often diminishes with exposure and appropriate cleaning.
Is Castohn Mountain Slate In Stock at OWS?
No—this product should be treated as a special-order material.
OWS does not normally maintain routine inventory of the Castohn Mountain Slate 24″ × 36″ paver.
Customers should contact us before planning around this product.
How Do Special Orders Work?
Special-order details may depend on current manufacturer availability.
Customers should contact OWS with:
- Approximate project square footage
- Desired color
- Quantity needed
- Project timeline
Our sales staff can then confirm:
- Current availability
- Lead time
- Order quantity requirements
- Pricing
- Pickup or delivery options
Why Should I Order the Entire Project at One Time?
Concrete color can vary slightly between production runs.
Because Mountain Slate intentionally includes natural color variation, ordering the entire project together can help minimize noticeable differences between separate manufacturing lots.
This is especially important for a special-order product.
Can Special-Order Material Be Returned?
Special-order policies can differ from normal stocked products.
Customers should confirm OWS’s current special-order and return policy before placing the order.
Pros & Cons of Castohn Mountain Slate 24″ × 36″
| Pros | Cons |
|---|---|
| Large 24″ × 36″ format | Special-order product at OWS |
| Authentic slate-inspired texture | Significantly heavier than standard pavers |
| Consistent 2-1/2″ thickness | Requires very careful base preparation |
| Approximately 6 sq. ft. per paver | Handling may require multiple people or equipment |
| Fewer joints than small pavers | Cutting requires substantial masonry equipment |
| Wet-cast natural appearance | Not automatically suitable for vehicle traffic |
| Four current South-region colors | Color availability and lead times should be confirmed |
| Excellent for patios and courtyards | Replacement pieces may require another special order |
| Eased edges | Higher material/installation cost than basic pavers |
Castohn Mountain Slate 24″ × 36″ Pavers in Dallas–Fort Worth
Castohn Mountain Slate 24″ × 36″ pavers are an excellent option for Dallas–Fort Worth customers who want the look and texture of natural slate in a large-format manufactured concrete paving unit.
The large 6-square-foot slab format works especially well for:
- High-end patios
- Courtyards
- Wide walkways
- Pool decks
- Architectural outdoor spaces
- Contemporary landscape designs
Castohn’s wet-cast process provides realistic surface detail while the consistent 2-1/2″ thickness helps installers achieve predictable elevations.
Outdoor Warehouse Supply offers the Castohn Mountain Slate 24″ × 36″ paver by special order through our Plano and Lewisville locations.
Industry Contractor & Wholesale Pricing
Outdoor Warehouse Supply offers industry contractor and wholesale pricing for qualifying landscape contractors, hardscape installers, pool contractors, builders, designers, commercial landscapers, and other industry buyers.
Contractors can source special-order Castohn Mountain Slate alongside base materials, Concrete Sand, polymeric joint materials, steel edging, natural stone, and other hardscape products through OWS.
Contact our Plano or Lewisville sales staff for current color availability, special-order quantities, lead times, and pricing.
Frequently Asked Questions
What is Castohn Mountain Slate?
Castohn Mountain Slate is a large-format wet-cast concrete paver collection designed to replicate the texture and appearance of natural slate.
What size is the Mountain Slate paver OWS offers?
This page covers the 24″ × 36″ size.
How thick is the Castohn Mountain Slate paver?
Castohn lists the Mountain Slate collection at a consistent 2-1/2″ thickness.
How many square feet does one 24″ × 36″ paver cover?
Approximately 6 square feet of nominal surface area.
Is Mountain Slate real slate?
No.
It is a wet-cast concrete paver designed to reproduce a natural slate texture.
What is wet-cast concrete?
Wet-cast concrete uses a fluid concrete mixture poured into detailed molds, allowing manufacturers to reproduce natural textures with greater detail.
Does Mountain Slate have a natural stone texture?
Yes.
Castohn describes it as having an authentic natural slate texture.
Are the edges perfectly sharp?
No.
Castohn uses eased edges for a softer finished appearance.
Do the colors vary between pieces?
Yes.
Castohn intentionally allows slight color variation for a more natural appearance.
What colors are available?
Castohn’s current South-region Mountain Slate collection lists:
- Graphite
- Chocolate
- Pearl
- Southern Buff
Current special-order availability should be confirmed through OWS.
Is Mountain Slate good for patios?
Yes.
Large patios are one of the strongest applications for this product.
Can Mountain Slate be used for walkways?
Yes.
Can it be used around pools?
Yes, in appropriately designed pedestrian pool-deck installations.
Can Mountain Slate be used in courtyards?
Yes.
Its large-format architectural appearance works especially well in courtyards.
Is Mountain Slate good for driveways?
OWS should not advertise the 24″ × 36″ slab for vehicle traffic without confirmation that the specific installation system is approved by Castohn.
Does Mountain Slate need a compacted base?
Yes, for typical flexible-base paver installations.
Why does a large-format paver need such a flat base?
Large slabs need even support across their full surface. Voids or high spots can create rocking or stress concentrations.
Can Mountain Slate be installed over concrete?
Potentially, but only with a manufacturer-approved installation method and a suitable existing concrete substrate.
Does Mountain Slate need edge restraint?
Most flexible-base paving systems require proper edge restraint.
Can polymeric sand be used?
Potentially yes, provided the chosen jointing product is approved for the actual joint width, depth, and base system.
Can Gator Maxx G2 be used?
It may be appropriate when all Alliance Gator joint and installation requirements are satisfied.
Can Mountain Slate be cut?
Yes.
Appropriate professional masonry-cutting equipment should be used.
How many 24″ × 36″ pavers do I need for 120 square feet?
Approximately 20 pavers before waste because each unit represents about 6 sq. ft.
Should I order extra material?
Yes.
Allow material for cuts, breakage, pattern layout, and future replacement.
How heavy is one Mountain Slate 24″ × 36″ paver?
A current listing for this size indicates roughly 200 lb. per unit, but OWS should confirm the exact current South-region production weight before publishing it as a guaranteed specification.
Can Mountain Slate be sealed?
Yes, with a compatible wet-cast concrete sealer. Test first because sealers can alter the appearance.
Is Mountain Slate low maintenance?
Generally yes.
Routine sweeping and occasional compatible cleaning are usually the main maintenance requirements.
Is Castohn Mountain Slate normally stocked at OWS?
No.
The 24″ × 36″ Mountain Slate is a special-order product.
Can OWS special order Mountain Slate?
Yes.
Contact our Plano or Lewisville sales staff for current color availability, quantity requirements, and lead times.
Should I order my full project at once?
Yes when practical.
Ordering all material together can help reduce visible differences between separate production runs.
Is Castohn Mountain Slate available in Dallas–Fort Worth?
Yes, by special order through Outdoor Warehouse Supply.
