Restore the timeless beauty and structural integrity of your historic masonry with our PHL 3.5 Lime Mortar.

Preserving a historic building is a labor of love, whether you’re a professional mason or a homeowner dedicated to doing it right. Standard modern cement is often too rigid for older structures, trapping moisture and causing stone or brick to flake and crack over time.

Our PHL 3.5 Lime Mortar Concentrate is designed to respect the original craftsmanship of your building. It offers the same breathability and durability as traditional hydraulic lime, but in a flexible concentrate that you mix with local sand. This ensures your repair doesn't just look authentic—it functions exactly the way historic masonry was intended to.

Why PHL 3.5 is the Right Choice

• Built for Longevity: Unlike Portland cement, this pozzolanic lime blend allows your masonry to "breathe" and flex. This prevents moisture buildup and protects your walls from the damage caused by freeze-thaw cycles.
• The "Goldilocks" Strength: Rated at a 3.5 (moderate) strength, this formula is the versatile middle ground—stronger than our 2.0 for fragile brick, but more flexible than our 5.0 for high-exposure areas.
• Multiple Sizes Available: Choose from quart, gallon, 5-gallon, and bulk pallet quantities to match the scale of your job, from minor touch-ups to major restorations.
• Visual Accuracy: Choose from White, Gray, Light Buff, Dark Buff, or Dark Red to get a seamless match with your existing joints. Color packs are packaged separately with the mortar so you can add less pigment while mixing to adjust the shade of the mortar.
• User-Friendly: We’ve stripped away the complexity. Just follow the mixing ratios for sand and water to get a smooth, workable consistency that’s ready for the trowel.

Best Uses

• Repointing: Filling in aged or receding joints in historic brick and stone.
• Structural Health: Fixing cracks and gaps to stop water infiltration.
• Heritage Restoration: Maintaining the aesthetic and physical integrity of buildings originally constructed with lime-based mortars.