Pointing is the process of renewing mortar joints between bricks or stone, and choosing the right cement mix is crucial for long-term durability. The wrong cement can cause cracking, water penetration, and even damage to the masonry itself.
1. Ordinary Portland Cement (OPC)
For most modern buildings, Ordinary Portland Cement mixed with sand is the standard choice. A common mix ratio is 1 part cement to 3 parts sand, which provides strength and weather resistance.
2. Portland-Lime Cement
Adding lime to the cement (often called a Portland-lime mortar) makes the mix more workable and flexible. This is especially useful in areas with temperature fluctuations like Milwaukee, where the freeze-thaw cycle can stress rigid mortar joints.
3. Lime Mortar for Historic Brickwork
For older or historic properties, lime-based mortars (without much Portland cement) are recommended. They are softer and allow the brickwork to breathe, preventing moisture from getting trapped and damaging the bricks.
4. Colored Cement Options
When aesthetics matter, pointing mortar can be color-matched with pigmented cement to blend seamlessly with existing masonry.
👉 Takeaway: For modern construction, Portland cement or Portland-lime blends are best for pointing. For historic buildings, a lime-rich mortar is the safer choice. Always consider the age of the structure, local climate, and type of brickwork before deciding on the cement mix.
Need tuckpointing services in Milwaukee? Contact North Shore Brickwork today for a professional assessment.