Minn. R. agency 151, ch. 1309, pt. 1309.0702 - SECTION R702, INTERIOR COVERING

Subpart 1. IRC Table R702.1(3).

Table R702.1(3) is amended to read as follows:

TABLE R702.1(3) CEMENT PLASTER PROPORTIONS, PARTS BY VOLUME

COAT	CEMENT PLASTER TYPE	CEMENTITIOUS MATERIALS				VOLUME OF AGGREGAT PER SUM OF SEPARATE VOLUMES OF CEMENTITIOUS MATERIALSb
		Portland Cement Type I, II or III or Blended Cement Type IP, I(PM), IS or I(SM)	Plastic Cement	Masonry Cement Type M, S or N	Lime
First	Portland or blended	1			3/4 - 1-1/2a	2-1/2 - 4
	Masonry			1		2-1/2 - 4
	Plastic		1			2-1/2 - 4
Second	Portland or blended	1			3/4 - 1-1/2	3-5
	Masonry			1		3-5
	Plastic		1			3-5
Finish	Portland or blended	1			3/4-2	1-1/2 - 3
	Masonry			1		1-1/2 - 3
	Plastic		1			1-1/2 - 3

For SI: 1 inch = 25.4 mm, 1 pound = 0.545 kg.

a. Lime by volume of 0 to 3/4 shall be used when the plaster will be placed over low-absorption surfaces such as dense clay tile or brick.

b. The same or greater sand proportion shall be used in the second coat than used in the first coat.

Subp. 2. IRC section R702.7 Vapor retarders.

Section R702.7 is amended to read as follows:

R702.7 Vapor retarders. A Class I or II vapor retarder is required on the interior side of frame walls in Climate Zones 6 and 7. Class II vapor retarders are permitted only when specified on the construction documents.

Notes

Minn. R. agency 151, ch. 1309, pt. 1309.0702

39 SR 91