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What kind of mortar?

Posted by Mongo on September 9th, 2001 09:44 PM
In reply to Lime added to mortar by alan on September 9th, 2001 06:19 PM [Go to top of thread]


It's tough to answer without knowing what type of mortar you are using. By "type" I mean N, S, or M. In addition to "BASALITE," somewhere on the bag it should tel you the type.

Since it's a wall in your front yard, I'm guessing it's non-structural, and being constructed of typical brick. For that, Type N mortar should do the trick.

Type N consists of 1 part cement, 1 part lime, and 5 parts sand.

Type S is "harder" has more compressive strength, but is less plastic due to having less lime, and proportionally, more portland. This makes it, for some, slightly harder to work with.

Type S has 1 part cement, 1/2 part lime, and 4 parts sand.

So, if you have Type S and want to turn it into Type N, for every 5 1/2 shovels of dry mix, add one shovel of sand and 1/2 shovel of lime.

If you're having trouble with Type N, add about 1 shovel of lime for every 10 shovels of mix.

Still, Type N should work for you. If not, you may be mixing it too dry, or mixing up too large of a batch, causing it to set slightly before you get around to using all of it.

For proper consistency, you should be able to butter the side of a brick and not have the mortar fall off. It may droop some like peanut butter would, but it shouldn't fall off.

Good luck!

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Topic History:

Topic Follow-ups:

  • Bricks by Alan  9/9/01 10:26 PM
  • mortar by linda deniston  2/14/03 01:33 PM
  • Mortar by mrdap  7/30/03 05:03 PM

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