Plaster and Stucco Mortar Requirements

(Per 100 Square Feet)

Mix	1:1½		1:2		Mix	1:2½		1:3
Thickness	Bags Masonry Cement	Sand (cu. ft.)	Bags Masonry Cement	Sand (cu.ft.)	Thickness	Bags Masonry Cement	Sand (cu. ft.)	Bags Masonry Cement	Sand (cu. ft.)
1/4"	1.3	2.0	1.1	2.2	1/4"	1.0	2.5	.9	2.7
3/8"	2.0	2.5	1.7	3.4	3/8"	1.4	3.5	1.2	3.6
1/2"	2.6	3.9	2.2	4.4	1/2"	1.9	4.7	1.7	5.1
5/8"	3.3	4.9	2.8	5.6	5/8"	2.3	5.8	2.1	6.3
3/4"	4.0	6.0	3.3	6.6	3/4"	2.9	7.2	2.5	7.5

Note: 10% allowance for waste. Masonry cement is recommended and approved for parging plaster and stucco.

Materials Required for Concrete Masonry Construction Wall Thickness Unit Size (WxHxL) Per 100 Square Feet Per 100 Units Units Bags Masonry Cement Bags Masonry Cement 4" 4 x 4 x 16 225 4.3 2 6" 6 x 4 x 16 225 4.3 2 8" 8 x 4 x 16 225 4.3 2 4" 4 x 8 x 16 112.5 2.8 2.5 6" 6 X 8 X 16 112.5 2.8 2.5 8" 8 x 8 x 16 112.5 2.8 2.5 12" 12 X 8 X 16 112.5 2.8 2.5 Note: Mortar quantities based upon 3/8" joints, face shell bedding, waste allowance.

Mortar Proportion Specification Requirements Mortar Type Proportions by Volume (Cementitious Materials)   Portland Cement or Blended Cement Masonry Cement Hydrated Lime or Lime Putty Aggregate Ratio (Measured in Damp, Loose Conditions) Type M Type S Type N Cement-lime M 1       1/4     S 1       Over 1/4 to 1/2     N 1       Over 1/2 to 1-1/4     O 1       Over 1-1/4 to 2-1/2   Masonry Cement M 1     1     M   1       Not less than 2-1/4 and not more than 3 times the sum of the separate volumes of cementitious materials.   S 1/2     1     S     1       N       1     O       1   Note: Two air-entraining materials shall not be combined in mortar.