PermaBASE Building Products

All joints and fastener heads must be treated with waterproofing material to complete the waterproof installation.

A coated fiberglass facer and waterproof foam core provide the waterproof performance to meet ANSI A118.10 requirements for waterproofness.

Both methods are approved as long as you stagger the joints.

For all interior applications. For exterior jobs, PermaBASE® Cement Board should always be installed over a primary sheathing.

All joints and corners must be finished with PermaBASE Cement Board Tape in approved mortars or basecoats.

Corrosion-resistant screw or galvanized roofing nails. Strongly suggest PermaBASE™ Cement Board Screws since they do not have nibs like competitor screws.

2” wide alkali-resistant PermaBASE Cement Board Tape for all board joints.

4” wide alkali-resistant PermaBASE Cement Board Tape for inside and outside corners.

4” wide alkali-resistant PermaBASE Cement Board Tape for all exterior applications.

Long enough to go into wood studs ¾” and metal framing 3/8” (min. three threads).

For flooring applications with 16" o.c. floor joists, 5/8" tongue-and-groove exterior-grade plywood or 3/4" tongue-and-groove exterior-grade OSB may be used. For 19.2" o.c. and 24" o.c. floor joists, 3/4" tongue-and-groove exterior-grade plywood or OSB must be used. Tile size for floors with 24" o.c. floor joists must be 12" x 12" or larger. The joist and subfloor assembly must meet L/360 as well as the appropriate code tables for live and dead loads.

16” o.c. for wood and metal.

Low rise residential or commercial applications. Higher heights may be approved by a design professional.