Mason Sand
Fine, clean sand perfectly suited for mortar, brick work, and applications requiring a smooth finish.
What is Mason Sand?
Mason sand (also called "mortar sand," "brick sand," or "fine sand") is a washed sand with very fine, uniform particles typically ranging from 0.1mm to 2mm. It is processed to remove larger aggregate and most of the silt and clay, resulting in a smooth, workable material.
Unlike concrete sand, mason sand has rounded particles that create a smooth, buttery consistency when mixed with cement. This makes it ideal for mortar joints between bricks and blocks, where a rough texture would be unsightly and difficult to tool.
In Northumberland County, mason sand is used primarily for brick and stone work, as a joint filler for certain types of pavers, and in applications where a fine, clean sand is required. Its consistent quality and smooth texture make it the preferred choice for finished masonry work.
Key Properties
- Fine texture: Smooth, uniform particles
- Clean composition: Washed free of impurities
- Workability: Easy to spread and tool
- Light color: Typically beige or white
- Consistent quality: Uniform gradation
Quick Facts
| Particle Size | 0.1mm - 2mm |
| Density | ~1.2 tonnes/cubic yard |
| Best For | Mortar, fine joints |
| Color | Beige to white |
| Texture | Fine, smooth |
Calculate Sand Needs
Use our calculator to determine exactly how much sand you need for your masonry project.
Sand Calculator →Common Uses for Mason Sand
Brick Mortar
The standard sand for mixing mortar used in brick and block walls. Creates smooth, workable joints that are easy to tool.
Stone Veneer
Used in mortar for installing natural and manufactured stone veneer. Fine texture prevents large aggregate from showing through joints.
Stucco Base
Component of stucco and render mixes. Fine particles create smooth finishes on exterior walls.
Paver Joints (Traditional)
Historically used to fill joints between pavers. Now largely replaced by polymeric sand for better stability.
Sandboxes & Play Areas
Clean, washed mason sand is safe for children's sandboxes and play areas. Soft texture is gentle on skin.
Arena Footing
Mixed with other materials to create footing for horse arenas and round pens. Provides cushioning and traction.
Installation Tips
1. Mortar Mixing
Standard mortar mix is 1 part Portland cement to 3 parts mason sand. Mix dry ingredients first, then add water gradually until the mortar reaches a smooth, peanut butter-like consistency.
2. Joint Filling
When using mason sand for paver joints, ensure pavers are completely dry. Sweep sand into joints until full, then use a plate compactor to vibrate sand deep into the cracks. Re-sweep and repeat.
3. Storage
Store mason sand under cover to prevent contamination. Keep different sand types separated to prevent mixing. Moisture is acceptable for mortar mixing but not for joint filling.
4. Color Matching
Mason sand color varies by source. If color consistency is important for your project, purchase all sand from the same supplier at the same time.
5. Safety
While mason sand is cleaner than many sands, always wear a dust mask when mixing dry materials. Wet mixing is safer and provides better mortar consistency.
⚠️ Not for Paver Bedding
Never use mason sand as a paver bedding layer. The fine particles don't provide the stability of concrete sand and can lead to settling and paver movement.
Where to Buy Mason Sand in Northumberland County
Mason sand is available from masonry suppliers and building centers:
- Masonry supply yards
- Building material suppliers
- Some landscape centers
- Concrete suppliers
Note: We do not sell materials. Contact local suppliers for current pricing and availability.
💡 Modern Alternative
For paver joints, consider polymeric sand instead of mason sand. It hardens when wet, preventing weed growth and insect infestation while locking pavers in place.
Mason Sand vs Concrete Sand
| Feature | Mason Sand | Concrete Sand |
|---|---|---|
| Particle Size | Fine (0.1-2mm) | Coarse (0.25-4.75mm) |
| Texture | Smooth, rounded | Gritty, angular |
| Mortar Work | Ideal | Acceptable |
| Paver Bedding | Not Suitable | Ideal |
| Best Use | Mortar, fine joints | Bedding, concrete mix |