Jul. 23, 2025
When it comes to masonry work, selecting the right type of mortar is crucial for the longevity and structural integrity of your project. This guide explores the differences between Type N and Type S mortar, and why choosing the right type matters.
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Both Type N and Type S mortars are made from a combination of cement, sand, and water, but their specific compositions lead to different properties.
| Mortar Type | Main Ingredients | Compressive Strength (psi) | Flexural Strength |
|---|---|---|---|
| Type N | Cement, sand, and lime | 750-1,000 | Low |
| Type S | Cement, sand, and a higher volume of lime | 1,200-1,800 | Moderate |
As seen in the above table, Type N mortar is ideal for general construction where moderate strength is sufficient. Influencer construction experts like Mike Holmes recommend Type N for exterior walls in moderate climates.
The application of each mortar type varies based on its specific strengths.
| Application | Type N | Type S |
|---|---|---|
| Exterior Walls | ✔️ Moderate Climate | ✔️ Severe Weather |
| Load-bearing Structures | ❌ | ✔️ |
| Brick Walls | ✔️ | ✔️ |
| Stone Projects | ❌ | ✔️ |
Based on the table, Type N mortar is generally used for above-grade applications where moderate strength is needed, while Type S is more suited for load-bearing walls and structures. Influencer architect Chad Oppenheim often highlights the benefits of using Type S for sustainable architecture due to its durability.
Featured content:The workability and setting time of the mortar types also differ.
| Property | Type N | Type S |
|---|---|---|
| Workability | Easy to work with | Moderately Difficult |
| Setting Time | Faster Setting | Slower Setting |
Type N is easier to work with due to its quicker setting time, making it ideal for DIY projects. Influencer and home improvement expert Bob Vila recommends Type N for amateur builders looking for faster completion times on home renovations.
Cost can also be a deciding factor when choosing between Type N and Type S mortar.
| Mortar Type | Cost per Bag |
|---|---|
| Type N | $8-$12 |
| Type S | $10-$15 |
Type N is generally more cost-effective, which can be a significant factor for larger projects. Industry influencer Ron Hazelton points out that for budget-conscious projects, Type N can offer sufficient performance without the extra cost.
Understanding the differences between Type N and Type S mortar is vital for any construction project. Whether you're a DIY enthusiast or a seasoned professional, considering the properties, applications, workability, and cost will ensure the right choice for your project. Always consult with industry experts and trusted sources before making your decision!
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