New Era Tiles & Finishes Limited

Description

PRODUCT DESCRIPTION

LATICRETE Blue 92 Anti-Fracture Membrane is a two–part system consisting of a liquid rubber and reinforcing fabric.  When cured, it forms a highly flexible membrane.  While the thin bed method of tile installation provides many advantages, this method can be affected by problems with shrinkage cracking in concrete and other types of substrates. Cracks can telegraph through the tile and/or grout joints. To reduce or eliminate  cracks in tile work, a flexible membrane should be applied to the cracked substrate prior to the installations of ceramic tile, marble and stone.

Uses

 For interior or exterior use on floors and walls whenever hairline cracking or “spiderwebbing” occurs in the substrate.

 For use over shrinkage and other non-structural cracks up to 1/8" (3 mm).

 Typical applications are over concrete slabs (suspended or on grade) in malls, lobbies and residential applications under ceramic tile, marble and stone.

 Use to cover joints in plywood underlayments, cement backer boards, and concrete masonry on floors and walls.

 Also use over concrete floors and underlayments with radiant heating systems. 

Advantages

 Reduces crack transmission in ceramic tile, thin brick, marble and stone installed using thin-set method.  Also ideal for use under cement based or resin Terrazzo. 

 Inhibits the growth of stain causing mold and mildew with Microban® antimicrobial protection.

 Thin—adds no appreciable thickness to floor construction;  install tile with LATICRETE Polymer Fortified Thin-Set Mortar directly to cured membrane.

 “Extra Heavy Service” rating per TCNA performance levels (RE: ASTM C627 Robinson Floor Test).

 Easy to Apply—goes on quickly with paint brush or roller; no mixing or special equipment required.

 Fast Cure—dries in a few hours to receive finished surfacing.

 Easy Cleanup—cleans with water while fresh.

 Safe—no solvents or harsh fumes, non-flammable. 

Suitable Substrates

 Exterior glue plywood*

 Concrete

 Mortar beds, renders

 Cement backer board**

 Cement terrazzo***

 Ceramic Tile and Stone***

 Concrete masonry

* Interior applications only.

**Consult cement backer board manufacturer for specific installation recommendations and to verify acceptability for exterior use.

*** If skim-coated with a LATICRETE Latex Thin-Set Mortar

Packaging

Full Unit consists of:

 5 US gallon (19 l) pail liquid

 1–roll reinforcing fabric:  38" (97 cm) wide, 95 ft (29 m) long

 1–roll reinforcing fabric:  6" (15 cm) wide, 75 ft (23 m) long Crack Suppression Kit (1/4 Unit) contains:

 2 gallon (7.66 l) jug of liquid, 15" (37.5 cm) wide roll

Coverage

Approximately 300 ft2(28 m2) at 20 mil (0.5 mm) thickness per full unit.

Approximately 75 linear ft (23 linear meters) per crack suppression kit.

Shelf Life

Factory sealed containers of this product are guaranteed to be of first quality for two (2) years if stored at temperatures  >32°F (0°C) and <110°F (43°C).

Limitations

 LATICRETE® Blue 92 Anti-Fracture Membrane is not intended for use as a waterproofing membrane.  When a waterproofing membrane is required, use a LATICRETE Waterproofing Membrane (see Section 10 FILING SYSTEMS).

 DO NOT use over expansion joints, structural cracks or areas with differential vertical movement.

 Adhesives/mastics, mortars and grouts for ceramic tile, pavers, brick and stone are not replacements for waterproofing membranes.

 Apply to surfaces above 45°F (7°C).  Maintain a constant temperature greater than 45°F (7°C) for 24 hours after installation.

 Not intended as a wearing surface.  Must be covered with tile, or other traffic bearing material.

 DO NOT bond to particle board, luan, Masonite®or hardwood surfaces.

 Not for use beneath cement or other plaster finishes.  Consult with plaster manufacturer for their recommendations when waterproofing membrane is required under plaster finishes.

 Not for use under self-leveling underlayments or decorative wear surfaces.

Cautions

 During cold weather, protect finished work from traffic until fully cured.

 For white and light-colored marbles use a white LATICRETE Mortar.

 For green resin backed agglomerates and moisture sensitive marbles, use LATAPOXY®300 Adhesive. Refer to Data Sheet 633.0. 

 Protect freshly installed membrane from water exposure. 

Preparation

Identify the type of crack in the substrate. DO NOT use LATICRETE Blue 92 Anti-Fracture Membrane over structural cracks or other areas with differential vertical movement.

Shrinkage Cracks: Occur during the curing process of the concrete. Typically the movement is horizontal (open and close).Structural Cracks: Occur from improper design or installations of substructure for load conditions.  Typical movement is vertical (up and down).  LATICRETE Blue 92 Anti-Fracture Membrane is not intended to bridge joints which experience dynamic movement such as expansion joints and structural cracks.  Expansion joints must be carried through the entire tile installation. 

Surface Preparation

1. Surfaces must be structurally sound, stable and rigid enough to support ceramic tile, stone, thin brick and similar finishes. 

Substrate deflection under all live, dead and impact loads, including concentrated loads, must not exceed L/360 for thin bed ceramic tile/brick installations or L/480 for thin bed stone installations where L=span length. For exterior vertical installations over framed construction, the substrate deflection under all live, dead and  impact loads, including concentrated loads, must not exceed L/600 where L=span length.

2. For thin-bed ceramic tile installations when a cementitious bonding material will be used, including medium bed mortar: maximum allowable variation in the tile substrate – for tiles with edges shorter than 15" (375mm), maximum allowable variation is 1/4" in 10' (6mm in 3m) from the required plane, with no more than 1/16" variation in 12" (1.5mm variation in 300mm) when measured from the high points in the surface. For tiles with at least one edge 15" (375mm) in length, maximum allowable variation is 1/8" in 10' (3mm in 3m) from the required plane, with no more than 1/16" variation in 24" (1.5mm variation in 600mm) when measured from the high points in the surface. For modular substrate units, such as exterior glue plywood panels or adjacent concrete masonry units, adjacent edges cannot exceed 1/32" (0.8mm) difference in height. 

3. Substrate beds shall be wood floated or lightly steel troweled.

4. Maximum amount of moisture in the concrete mortar bed substrate should not exceed 5 lbs/1,000 ft2/24hrs (283µg/s• m2) per ASTM F-1869 or 75% relative humidity as measured with moisture probes. Consult with finish material manufacturer to determine the maximum allowable moisture content for substrates under their finished material. 

5. Surfaces should be between 45°F (7°C) and 90°F (32°C). 

6. Provide minimum slope to drains of 1/4" per 1' (6 mm per 0.3 m).

7. Concrete and masonry must be free of curing agents, paint,sealers, water repellents or other treatments that prevent membrane bonding. 

8. Plywood floors (interiors only) – minimum construction for direct bond: 

SUBFLOOR: 5/8" (15 mm) thick, exterior glue, tongue and groove plywood over bridged 2" x 10" (40 mm x 240 mm nominal) joists spaced 16" (400 mm) o.c. maximum; fasten plywood 6" (150 mm) o.c. along sheet ends and 8" (200 mm) o.c. along intermediate supports with 8d (65 mm) ring-shank nails or screws; allow 1/8" (3 mm) between sheets; all sheet ends must be supported by a framing member; glue sheets to joists with construction adhesive; 

UNDERLAYMENT: 5/8" (15 mm) thick exterior glue plywood fastened 6" (150 mm) o.c. along sheet ends and 8" (200 mm) o.c. in the panel field (both directions) with 8d (65 mm) ringshank nails or screws; allow 1/8" (3 mm) between sheets and 1/4" (6 mm) between floor and any abutting surfaces; offset underlayment joints from joints in subfloor and stagger joints between sheet ends; glue underlayment to subfloor with construction adhesive.

Application

Pre-treat Cracks:  Apply a liberal coat^ of liquid 8" (20 cm) wide over crack.  Embed 6" (15 cm) wide LATICRETE® Waterproofing/Anti-Fracture Fabric into first coat of liquid.  Liberally apply 2nd coat of liquid^ to seal LATICRETE Waterproofing/Anti-Fracture Fabric.

Crack Isolation (Partial Coverage)    Crack suppression must be applied a minimum of 3 times the width of the tile or stone being installed. The tile installed over the crack cannot be in contact with the concrete. 

Follow TCNA Method F125 for the treatment of hairline cracks, shrinkage cracks, and saw cut or control joints:  Apply a liberal coat^^ of LATICRETE Blue 92 Anti-Fracture Membrane liquid, 8" (200 mm) wide over the using a paint roller or paint brush and immediately apply the 6" (150 mm) wide LATICRETE Waterproofing/Anti-Fracture Fabric into the wet liquid. Press firmly with brush or roller to allow complete “bleed through” of liquid.  Immediately apply a second liberal coat^^ of LATICRETE Blue 92 Anti-Fracture Membrane liquid over the fabric and allow to dry.  Apply a liberal coat^^ of LATICRETE Blue 92 Anti-Fracture Membrane to a minimum of three (3) times the width of the tile and immediately apply the LATICRETE Waterproofing/Anti-Fracture Fabric into the wet liquid. Press firmly with brush or roller to allow complete “bleed through” of liquid.  

Immediately apply another liberal coat^^ of LATICRETE Blue 92 AntiFracture Membrane liquid over the fabric and allow to dry.  Treat closest joint to crack, saw cut, or cold joint with LATICRETE Latasil™.

Refer to LATICRETE Detail ES-F125 (available www.laticrete.com/ag) and TCNA Method F125 for more information.

Main Membrane Application (Full Coverage):    Once surface of crack pre-treatment has dried to the touch, use a wide brush/paint roller to cover substrate with a liberal coat^ of LATICRETE Blue 92 Anti-Fracture Membrane liquid.  Cover an area slightly wider than the reinforcing fabric width (>38" [97 cm]).  Embed LATICRETE Waterproofing/Anti-Fracture Fabric while liquid is still wet.  Press firmly with brush or roller to allow complete “bleed through” of liquid.  Apply additional liberal coat^ of LATICRETE Blue 92 Anti-Fracture Membrane liquid to cover/saturate LATICRETE Waterproofing/Anti-Fracture Fabric. Lap LATICRETE Waterproofing/Anti-Fracture Fabric 2" (5 cm) at seams.  When final coat of liquid has dried to the touch (2–3 hours), install ceramic tile, brick or stone with a LATICRETE Polymer Fortified Thin-Set Mortar or a LATAPOXY 300 Adhesive. Treat closest joint to cold or saw cut joint LATICRETE Latasil.