Mortar types (ASTM C270)
The general-purpose mortar (min 750 psi) for above-grade exterior and interior load-bearing walls. Its softness tolerates movement, so it is the default for most brickwork.
| Designation | Type N |
|---|---|
| Ratio (by volume) | 1 : 1 : 6 |
| Portland cement | 1 part |
| Hydrated lime | 1 part |
| Sand | 6 parts |
| Typical compressive strength | 750 psi · 5.2 MPa |
| Typical use | General above-grade brick & block, most common. |
The general-purpose mortar (min 750 psi) for above-grade exterior and interior load-bearing walls. Its softness tolerates movement, so it is the default for most brickwork.
Mortar type matters more than most people expect: a mortar much stronger than the units it beds will transfer movement into the masonry and spall the faces. Pick the weakest mortar that meets the structural and exposure demand.
Need quantities? The volume calculators give the cubic yards, cubic metres and bag counts for the pour this mix goes into.
Applications
Same family