Permabase Ultrabacker 1/4 in. x 3 ft. x 5 ft. Cement Board : Installation Guide : Page 23

23

UL Listed PermaBase

®

Cement Board Partitions – Wood Framing

1-hour Fire Rating

U392 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to one side

of 2x4 wood studs 16" o.c. with 1-1/4" cement board screws spaced 8" o.c. Ceramic

tile installed over PermaBase. 5/8" Fire-Shield Gypsum Board applied vertically or hori-

zontally to opposite side with 6d nails spaced 7" o.c. 3-1/2" mineral wool insulation

in stud cavities.

1-hour Fire Rating

U392 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to each

side of 2x4 wood studs 16" o.c. with 1-1/4" cement board screws spaced 8" o.c.

Ceramic tile installed over PermaBase. 3-1/2" mineral wool insulation in stud cavities.

2-hour Fire Rating

U301 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over two layers 5/8"

Fire-Shield Gypsum Board, applied either horizontally or vertically to each side of

2x4 wood studs 16" o.c. PermaBase secured to studs with cement board screws of

adequate length to penetrate studs 3/4" spaced 8" o.c.

2-hour Fire Rating

U371a UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over two layers 5/8"

Gypsum Board, applied either horizontally or vertically to the interior side of 2x4 wood

studs 16" o.c., or over 5/8" Gypsum Sheathing applied to exterior side with portland

cement stucco, brick veneer, thin brick finishes. PermaBase secured to studs with

cement board screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

Notes

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