Istanbul Pulse
Mortar And Repointing

Type O Mortar: Mix Ratio, Strength and Repair Compatibility

Understand Type O mortar’s 1:2:9 mix and 350 psi strength benchmark, where it fits, and why historic brickwork needs more than a type label.

Oct 27, 2026

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Heritage Masonry

What Is Quicklime? Calcium Oxide in Lime Mortar

Understand quicklime, hydrated lime, lime putty and NHL, with a material checker and guidance on hot mixing, historic mortar compatibility and safe handling.