Use and Care Manual

ManualsBrandsSchluter Systems ManualsBacker Board0.5-in x 32-in x 48-in Kerdi-Board Polystyrene Foam Backer Board

SUBSTRATE, BUILDING PANEL, BONDED WATERPROOFING

Product Item Numbers

Schluter

-KERDI-BOARD Waterproof building panel

Item No. Width Length

Thickness

Panel dimension: 48" x 32" – 122 cm x 81 cm

KB 12 1220 812 48" – 122 cm 32" – 81 cm 1/2" – 12.5 mm

Panel dimension: 48" x 64" – 122 cm x 162.5 cm

KB 5 1220 1625 48" – 122 cm 64" – 162.5 cm 3/16" – 5 mm

KB 9 1220 1625 48" – 122 cm 64" – 162.5 cm 3/8" – 9 mm

KB 12 1220 1625 48" – 122 cm 64" – 162.5 cm 1/2" – 12.5 mm

Panel dimension: 48" x 96" – 122 cm x 244 cm

KB 5 1220 2440 48" – 122 cm 96" – 244 cm 3/16" – 5 mm

KB 9 1220 2440 48" – 122 cm 96" – 244 cm 3/8" – 9 mm

KB 12 1220 2440 48" – 122 cm 96" – 244 cm 1/2" – 12.5 mm

KB 15 1220 2440 48" – 122 cm 96" – 244 cm 5/8" – 15 mm

Panel dimension: 24-1/2" x 96" – 62.5 cm x 244 cm

KB 19 625 2440 24-1/2" – 62.5 cm 96" – 244 cm 3/4" – 19 mm

KB 25 625 2440 24-1/2" – 62.5 cm 96" – 244 cm 1" – 25 mm

KB 38 625 2440 24-1/2" – 62.5 cm 96" – 244 cm 1-1/2" – 38 mm

KB 50 625 2440 24-1/2" – 62.5 cm 96" – 244 cm 2" – 50 mm

Panel dimension: 48" x 120" – 122 cm x 305 cm

KB 15 1220 3050 48" – 122 cm 120" – 305 cm 5/8" – 15 mm

Schluter

-KERDI-BOARD-V Waterproof building panel

Item No. Width Length

Thickness

KB 19 625 2440 V 24-1/2" – 62.5 cm 96" – 244 cm 3/4" – 19 mm

KB 25 625 2440 V 24-1/2" – 62.5 cm 96" – 244 cm 1" – 25 mm

KB 38 625 2440 V 24-1/2" – 62.5 cm 96" – 244 cm 1-1/2" – 38 mm

KB 50 625 2440 V 24-1/2" – 62.5 cm 96" – 244 cm 2" – 50 mm

Waterproofing with KERDI-BOARD

Where waterproofing is desired, the joints and

corners of KERDI-BOARD in the area must

be sealed with KERDI-BAND using Schluter

SET™, Schluter ALL-SET™, Schluter FAST-

SET™ or unmodified thin-set mortar. The

KERDI-BAND must overlap panel joints by at

least 2" (50 mm).

KERDI-BAND is also suitable for sealing

connections to fixed building elements such

as door and window frames. Where these

surfaces will not accept a bond to Schluter

SET™, Schluter ALL-SET™, Schluter FAST-

SET™ or unmodified thin-set mortar, use

KERDI-FIX to bond KERDI-BAND.

Separate KERDI-BOARD above the existing

movement joints and structural joints and

cover the joints with Schluter

-KERDI-FLEX

using Schluter SET™, Schluter ALL-SET™,

Schluter FAST-SET™ or unmodified thin-

set mortar, ensuring a minimum 2" (50 mm)

overlap.

Fastener penetrations may be sealed

with KERDI-BAND using Schluter SET™,

Schluter ALL-SET™, Schluter FAST-SET™ or

unmodified thin-set mortar.

Please refer to the Schluter

-Shower System

Installation Handbook for guidelines on

waterproofing showers, steam showers, and

tub surrounds.

Note: Certain glass tiles may not be compatible

with bonded waterproofing applications and/

or may require special setting materials.

Consult glass tile manufacturer and Schluter-

Systems for more information.

Certain moisture-sensitive stones, e.g., green

marble, or resin-backed tiles may not be

appropriate for use in wet areas or may

require special setting materials. Consult

stone supplier and Schluter-Systems for

more information.

If installing bathroom fixtures such as grab

bars in showers, wall-mounted toilets, or

other heavy objects, the fixtures must be

anchored in the structure or solid blocking

behind KERDI-BOARD.

Note: Reinforcement may be required

behind the entire footprint of the object.

For example, place solid blocking behind

the base of a wall-mounted toilet installed

over KERDI-BOARD on stud framing.